/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copy1_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:47:54,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:47:54,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:47:54,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:47:54,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:47:54,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:47:54,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:47:54,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:47:54,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:47:54,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:47:54,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:47:54,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:47:54,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:47:54,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:47:54,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:47:54,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:47:54,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:47:54,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:47:54,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:47:54,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:47:54,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:47:54,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:47:54,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:47:54,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:47:54,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:47:54,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:47:54,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:47:54,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:47:54,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:47:54,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:47:54,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:47:54,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:47:54,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:47:54,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:47:54,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:47:54,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:47:54,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:47:54,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:47:54,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:47:54,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:47:54,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:47:54,900 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 [2020-10-14 17:47:54,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:47:54,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:47:54,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:47:54,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:47:54,923 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:47:54,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:47:54,924 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:47:54,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:47:54,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:47:54,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:47:54,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:47:54,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:47:54,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:47:54,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:47:54,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:47:54,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:47:54,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:47:54,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:47:54,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:47:54,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:47:54,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:47:54,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:47:54,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:47:54,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:47:54,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:47:54,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:47:54,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:47:54,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:47:54,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:47:54,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:47:55,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:47:55,215 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:47:55,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:47:55,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:47:55,221 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:47:55,222 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy1_ground-2.i [2020-10-14 17:47:55,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee7ede96f/5309c3e6d7784fa5a9cafb8732256da3/FLAG4893a52be [2020-10-14 17:47:55,670 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:47:55,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy1_ground-2.i [2020-10-14 17:47:55,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee7ede96f/5309c3e6d7784fa5a9cafb8732256da3/FLAG4893a52be [2020-10-14 17:47:56,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee7ede96f/5309c3e6d7784fa5a9cafb8732256da3 [2020-10-14 17:47:56,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:47:56,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:47:56,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:47:56,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:47:56,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:47:56,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:47:56" (1/1) ... [2020-10-14 17:47:56,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743cee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56, skipping insertion in model container [2020-10-14 17:47:56,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:47:56" (1/1) ... [2020-10-14 17:47:56,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:47:56,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:47:56,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:47:56,385 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:47:56,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:47:56,434 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:47:56,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56 WrapperNode [2020-10-14 17:47:56,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:47:56,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:47:56,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:47:56,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:47:56,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56" (1/1) ... [2020-10-14 17:47:56,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56" (1/1) ... [2020-10-14 17:47:56,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56" (1/1) ... [2020-10-14 17:47:56,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56" (1/1) ... [2020-10-14 17:47:56,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56" (1/1) ... [2020-10-14 17:47:56,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56" (1/1) ... [2020-10-14 17:47:56,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56" (1/1) ... [2020-10-14 17:47:56,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:47:56,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:47:56,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:47:56,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:47:56,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56" (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 [2020-10-14 17:47:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:47:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:47:56,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 17:47:56,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:47:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:47:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 17:47:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:47:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:47:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:47:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:47:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:47:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:47:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:47:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:47:56,904 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:47:56,905 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 17:47:56,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:47:56 BoogieIcfgContainer [2020-10-14 17:47:56,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:47:56,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:47:56,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:47:56,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:47:56,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:47:56" (1/3) ... [2020-10-14 17:47:56,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1d7a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:47:56, skipping insertion in model container [2020-10-14 17:47:56,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:47:56" (2/3) ... [2020-10-14 17:47:56,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1d7a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:47:56, skipping insertion in model container [2020-10-14 17:47:56,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:47:56" (3/3) ... [2020-10-14 17:47:56,922 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy1_ground-2.i [2020-10-14 17:47:56,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:47:56,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:47:56,951 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:47:56,970 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:47:56,970 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:47:56,970 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:47:56,971 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:47:56,971 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:47:56,971 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:47:56,971 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:47:56,971 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:47:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 17:47:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 17:47:56,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:56,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:56,997 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:57,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:57,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1778002988, now seen corresponding path program 1 times [2020-10-14 17:47:57,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:57,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003378252] [2020-10-14 17:47:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:57,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:57,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:57,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 17:47:57,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-14 17:47:57,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:57,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:47:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:47:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:47:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:47:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:57,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:57,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:57,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 17:47:57,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:57,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:57,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:57,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003378252] [2020-10-14 17:47:57,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:47:57,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:47:57,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526440501] [2020-10-14 17:47:57,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:47:57,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:57,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:47:57,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:47:57,477 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2020-10-14 17:47:57,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:57,575 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-10-14 17:47:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:47:57,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-14 17:47:57,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:57,585 INFO L225 Difference]: With dead ends: 48 [2020-10-14 17:47:57,586 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 17:47:57,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:47:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 17:47:57,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-14 17:47:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 17:47:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-14 17:47:57,627 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-14 17:47:57,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:57,628 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-14 17:47:57,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:47:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-14 17:47:57,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 17:47:57,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:57,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:57,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:47:57,630 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:57,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1485613060, now seen corresponding path program 1 times [2020-10-14 17:47:57,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:57,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870789595] [2020-10-14 17:47:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:57,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:57,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:57,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:57,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 17:47:57,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 17:47:57,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:57,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:47:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:47:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:47:57,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:57,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:57,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:57,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:57,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:57,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 17:47:57,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:57,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:57,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:57,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:47:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:57,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870789595] [2020-10-14 17:47:57,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:57,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:47:57,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278879554] [2020-10-14 17:47:57,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:47:57,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:57,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:47:57,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:47:57,923 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2020-10-14 17:47:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:57,995 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-10-14 17:47:57,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:47:57,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-14 17:47:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:57,997 INFO L225 Difference]: With dead ends: 37 [2020-10-14 17:47:57,997 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 17:47:57,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:47:57,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 17:47:58,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-14 17:47:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 17:47:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-14 17:47:58,006 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 17 [2020-10-14 17:47:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:58,006 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-14 17:47:58,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:47:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-14 17:47:58,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 17:47:58,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:58,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:58,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:47:58,008 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:58,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:58,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1774960226, now seen corresponding path program 2 times [2020-10-14 17:47:58,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:58,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849095445] [2020-10-14 17:47:58,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:58,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:58,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:58,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:58,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 17:47:58,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 17:47:58,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:58,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:58,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:47:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:47:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:47:58,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:58,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:58,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:58,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:58,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:58,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:58,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:47:58,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:58,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:58,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:58,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:58,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849095445] [2020-10-14 17:47:58,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:58,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 17:47:58,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846467414] [2020-10-14 17:47:58,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:47:58,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:58,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:47:58,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:47:58,273 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2020-10-14 17:47:58,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:58,367 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-10-14 17:47:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:47:58,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-14 17:47:58,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:58,369 INFO L225 Difference]: With dead ends: 39 [2020-10-14 17:47:58,369 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 17:47:58,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:47:58,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 17:47:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 17:47:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 17:47:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-14 17:47:58,380 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2020-10-14 17:47:58,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:58,380 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-14 17:47:58,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:47:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-14 17:47:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 17:47:58,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:58,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:58,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:47:58,383 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:58,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:58,383 INFO L82 PathProgramCache]: Analyzing trace with hash 664712512, now seen corresponding path program 3 times [2020-10-14 17:47:58,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:58,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050350041] [2020-10-14 17:47:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:58,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:58,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:58,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 17:47:58,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:58,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 17:47:58,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:58,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 17:47:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:47:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 17:47:58,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:58,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:58,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:58,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:58,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:58,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:58,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:58,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:58,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:58,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:58,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:58,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050350041] [2020-10-14 17:47:58,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:58,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 17:47:58,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969492980] [2020-10-14 17:47:58,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 17:47:58,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:58,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 17:47:58,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:47:58,664 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2020-10-14 17:47:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:58,730 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-10-14 17:47:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 17:47:58,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-14 17:47:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:58,732 INFO L225 Difference]: With dead ends: 41 [2020-10-14 17:47:58,732 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 17:47:58,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:47:58,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 17:47:58,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 17:47:58,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 17:47:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-14 17:47:58,739 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2020-10-14 17:47:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:58,740 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-14 17:47:58,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 17:47:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-14 17:47:58,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 17:47:58,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:58,741 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:58,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:47:58,742 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:58,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:58,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1131451234, now seen corresponding path program 4 times [2020-10-14 17:47:58,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:58,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147940718] [2020-10-14 17:47:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:58,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:58,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:58,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 17:47:58,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:58,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 17:47:58,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:58,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:47:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:47:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:47:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:59,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:59,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:59,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:59,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:59,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:59,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:59,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147940718] [2020-10-14 17:47:59,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:59,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:47:59,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818772798] [2020-10-14 17:47:59,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:47:59,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:59,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:47:59,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:47:59,030 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 8 states. [2020-10-14 17:47:59,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:59,105 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-14 17:47:59,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:47:59,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-14 17:47:59,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:59,106 INFO L225 Difference]: With dead ends: 43 [2020-10-14 17:47:59,107 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 17:47:59,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:47:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 17:47:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 17:47:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 17:47:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-14 17:47:59,113 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2020-10-14 17:47:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:59,114 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-14 17:47:59,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:47:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-14 17:47:59,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 17:47:59,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:59,115 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:59,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:47:59,116 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:59,116 INFO L82 PathProgramCache]: Analyzing trace with hash -667958148, now seen corresponding path program 5 times [2020-10-14 17:47:59,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:59,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143729145] [2020-10-14 17:47:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:59,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 17:47:59,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-14 17:47:59,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:59,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 17:47:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:47:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 17:47:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:59,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:59,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:59,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:59,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:59,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:59,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:59,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:59,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:59,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:59,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:59,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143729145] [2020-10-14 17:47:59,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:59,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 17:47:59,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216383043] [2020-10-14 17:47:59,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 17:47:59,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:59,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 17:47:59,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:47:59,393 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 9 states. [2020-10-14 17:47:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:59,471 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2020-10-14 17:47:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:47:59,471 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-14 17:47:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:59,472 INFO L225 Difference]: With dead ends: 45 [2020-10-14 17:47:59,472 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 17:47:59,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:47:59,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 17:47:59,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 17:47:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 17:47:59,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-14 17:47:59,479 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 25 [2020-10-14 17:47:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:59,479 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-14 17:47:59,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 17:47:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-14 17:47:59,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 17:47:59,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:59,480 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:59,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:47:59,481 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:59,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:59,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1927701286, now seen corresponding path program 6 times [2020-10-14 17:47:59,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:59,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118489931] [2020-10-14 17:47:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:59,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 17:47:59,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:47:59,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-14 17:47:59,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:59,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:47:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:47:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 17:47:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:59,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:47:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:47:59,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:47:59,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:47:59,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:47:59,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:47:59,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:47:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:47:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:47:59,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:47:59,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:47:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:47:59,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118489931] [2020-10-14 17:47:59,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:47:59,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:47:59,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609306884] [2020-10-14 17:47:59,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:47:59,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:47:59,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:47:59,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:47:59,865 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 10 states. [2020-10-14 17:47:59,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:47:59,951 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-10-14 17:47:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 17:47:59,952 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-14 17:47:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:47:59,953 INFO L225 Difference]: With dead ends: 47 [2020-10-14 17:47:59,954 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 17:47:59,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:47:59,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 17:47:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 17:47:59,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 17:47:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-14 17:47:59,959 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 27 [2020-10-14 17:47:59,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:47:59,960 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-14 17:47:59,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:47:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-14 17:47:59,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 17:47:59,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:47:59,962 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:47:59,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:47:59,963 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:47:59,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:47:59,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1360079432, now seen corresponding path program 7 times [2020-10-14 17:47:59,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:47:59,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565263004] [2020-10-14 17:47:59,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:47:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:47:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:47:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:00,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:00,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 17:48:00,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:00,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 17:48:00,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:00,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:48:00,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 17:48:00,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:00,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:00,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:00,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:00,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:00,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:00,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:00,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:00,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:00,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565263004] [2020-10-14 17:48:00,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:00,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:48:00,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978582862] [2020-10-14 17:48:00,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:48:00,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:00,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:48:00,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:48:00,449 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 11 states. [2020-10-14 17:48:00,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:00,560 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-10-14 17:48:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 17:48:00,561 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-14 17:48:00,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:00,561 INFO L225 Difference]: With dead ends: 49 [2020-10-14 17:48:00,562 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 17:48:00,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:48:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 17:48:00,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 17:48:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 17:48:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-14 17:48:00,568 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 29 [2020-10-14 17:48:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:00,568 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-14 17:48:00,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:48:00,569 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-14 17:48:00,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 17:48:00,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:00,570 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:00,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:48:00,570 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:00,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:00,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1336324330, now seen corresponding path program 8 times [2020-10-14 17:48:00,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:00,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309782548] [2020-10-14 17:48:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:01,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:01,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 17:48:01,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:01,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-14 17:48:01,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:01,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:01,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 17:48:01,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:01,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 17:48:01,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:01,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:01,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:01,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:01,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:01,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:01,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:01,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:01,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:01,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309782548] [2020-10-14 17:48:01,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:01,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 17:48:01,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590855433] [2020-10-14 17:48:01,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 17:48:01,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:01,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 17:48:01,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:48:01,160 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 12 states. [2020-10-14 17:48:01,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:01,264 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-10-14 17:48:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 17:48:01,265 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-14 17:48:01,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:01,266 INFO L225 Difference]: With dead ends: 51 [2020-10-14 17:48:01,266 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 17:48:01,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:48:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 17:48:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 17:48:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 17:48:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-14 17:48:01,272 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 31 [2020-10-14 17:48:01,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:01,273 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-14 17:48:01,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 17:48:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-14 17:48:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 17:48:01,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:01,274 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:01,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:48:01,275 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:01,275 INFO L82 PathProgramCache]: Analyzing trace with hash 17492212, now seen corresponding path program 9 times [2020-10-14 17:48:01,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:01,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291367408] [2020-10-14 17:48:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:01,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:01,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:01,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 17:48:01,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-14 17:48:01,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:01,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:48:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:01,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 17:48:01,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:01,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:01,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:01,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:01,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:01,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:01,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:01,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291367408] [2020-10-14 17:48:01,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:01,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:48:01,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249344362] [2020-10-14 17:48:01,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:48:01,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:01,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:48:01,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:48:01,947 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 13 states. [2020-10-14 17:48:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:02,060 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-10-14 17:48:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 17:48:02,060 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-14 17:48:02,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:02,061 INFO L225 Difference]: With dead ends: 53 [2020-10-14 17:48:02,061 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 17:48:02,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:48:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 17:48:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 17:48:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 17:48:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-14 17:48:02,067 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 33 [2020-10-14 17:48:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:02,067 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-14 17:48:02,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:48:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-14 17:48:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 17:48:02,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:02,069 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:02,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:48:02,069 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:02,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:02,069 INFO L82 PathProgramCache]: Analyzing trace with hash -339901614, now seen corresponding path program 10 times [2020-10-14 17:48:02,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:02,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186958098] [2020-10-14 17:48:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:02,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:02,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:02,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 17:48:02,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:02,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-14 17:48:02,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:02,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:02,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:48:02,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:02,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 17:48:02,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:02,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:02,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:02,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:02,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:02,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:02,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186958098] [2020-10-14 17:48:02,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:02,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:48:02,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871704129] [2020-10-14 17:48:02,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:48:02,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:02,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:48:02,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:48:02,675 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 14 states. [2020-10-14 17:48:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:02,776 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-10-14 17:48:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:48:02,776 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-14 17:48:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:02,777 INFO L225 Difference]: With dead ends: 55 [2020-10-14 17:48:02,777 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 17:48:02,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:48:02,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 17:48:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 17:48:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 17:48:02,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-14 17:48:02,783 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 35 [2020-10-14 17:48:02,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:02,783 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-14 17:48:02,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:48:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-14 17:48:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 17:48:02,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:02,784 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:02,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:48:02,785 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:02,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:02,785 INFO L82 PathProgramCache]: Analyzing trace with hash -197984720, now seen corresponding path program 11 times [2020-10-14 17:48:02,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:02,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112504153] [2020-10-14 17:48:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:02,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:02,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:03,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:03,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 17:48:03,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:03,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-14 17:48:03,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:03,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:03,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:48:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 17:48:03,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:03,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:03,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:03,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:03,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:03,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:03,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:03,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112504153] [2020-10-14 17:48:03,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:03,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:48:03,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970291432] [2020-10-14 17:48:03,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:48:03,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:03,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:48:03,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:48:03,558 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 15 states. [2020-10-14 17:48:03,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:03,710 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-10-14 17:48:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 17:48:03,711 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2020-10-14 17:48:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:03,714 INFO L225 Difference]: With dead ends: 57 [2020-10-14 17:48:03,715 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 17:48:03,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:48:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 17:48:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 17:48:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 17:48:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-10-14 17:48:03,727 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 37 [2020-10-14 17:48:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:03,728 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-10-14 17:48:03,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:48:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-10-14 17:48:03,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 17:48:03,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:03,729 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:03,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:48:03,732 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:03,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1254803058, now seen corresponding path program 12 times [2020-10-14 17:48:03,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:03,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981502973] [2020-10-14 17:48:03,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:03,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:03,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:04,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:04,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 17:48:04,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:04,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-14 17:48:04,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:04,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:04,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:48:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:04,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 17:48:04,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:04,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:04,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:04,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:04,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:04,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:04,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:04,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:04,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:04,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981502973] [2020-10-14 17:48:04,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:04,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:48:04,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668824715] [2020-10-14 17:48:04,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:48:04,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:04,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:48:04,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:48:04,782 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 16 states. [2020-10-14 17:48:04,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:04,911 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-10-14 17:48:04,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 17:48:04,912 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-14 17:48:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:04,912 INFO L225 Difference]: With dead ends: 59 [2020-10-14 17:48:04,912 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 17:48:04,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:48:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 17:48:04,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 17:48:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 17:48:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-14 17:48:04,921 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 39 [2020-10-14 17:48:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:04,923 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-14 17:48:04,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:48:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-14 17:48:04,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 17:48:04,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:04,924 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:04,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:48:04,925 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:04,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1050023276, now seen corresponding path program 13 times [2020-10-14 17:48:04,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:04,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650476032] [2020-10-14 17:48:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:04,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:05,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:05,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 17:48:05,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:05,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-14 17:48:05,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:05,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:48:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:05,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 17:48:05,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:05,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:05,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:05,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:05,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:05,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:05,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:05,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:05,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650476032] [2020-10-14 17:48:05,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:05,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:48:05,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379316592] [2020-10-14 17:48:05,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:48:05,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:05,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:48:05,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:48:05,757 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 17 states. [2020-10-14 17:48:05,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:05,889 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2020-10-14 17:48:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:48:05,889 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-10-14 17:48:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:05,890 INFO L225 Difference]: With dead ends: 61 [2020-10-14 17:48:05,890 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 17:48:05,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:48:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 17:48:05,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 17:48:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 17:48:05,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-10-14 17:48:05,895 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 41 [2020-10-14 17:48:05,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:05,895 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-10-14 17:48:05,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:48:05,896 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-10-14 17:48:05,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 17:48:05,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:05,897 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:05,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:48:05,897 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:05,897 INFO L82 PathProgramCache]: Analyzing trace with hash -214994486, now seen corresponding path program 14 times [2020-10-14 17:48:05,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:05,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832994197] [2020-10-14 17:48:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:06,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:06,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 17:48:06,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:06,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-14 17:48:06,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:06,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:48:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 17:48:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:06,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:06,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:06,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:06,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:06,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:06,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:06,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:06,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832994197] [2020-10-14 17:48:06,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:06,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:48:06,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214487264] [2020-10-14 17:48:06,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:48:06,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:06,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:48:06,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:48:06,790 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 18 states. [2020-10-14 17:48:06,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:06,933 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-10-14 17:48:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 17:48:06,934 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2020-10-14 17:48:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:06,934 INFO L225 Difference]: With dead ends: 63 [2020-10-14 17:48:06,934 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 17:48:06,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:48:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 17:48:06,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 17:48:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 17:48:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-14 17:48:06,942 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 43 [2020-10-14 17:48:06,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:06,944 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-14 17:48:06,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:48:06,944 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-14 17:48:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 17:48:06,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:06,945 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:06,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 17:48:06,945 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:06,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:06,946 INFO L82 PathProgramCache]: Analyzing trace with hash -421319000, now seen corresponding path program 15 times [2020-10-14 17:48:06,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:06,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780417535] [2020-10-14 17:48:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:06,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:06,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:07,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:07,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 17:48:07,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:07,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-14 17:48:07,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:07,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:07,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:48:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 17:48:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:07,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:07,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:07,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:07,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:07,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:07,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:07,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:07,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:07,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780417535] [2020-10-14 17:48:07,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:07,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:48:07,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691352962] [2020-10-14 17:48:07,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:48:07,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:07,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:48:07,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:48:07,774 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 19 states. [2020-10-14 17:48:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:07,880 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-10-14 17:48:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:48:07,880 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 45 [2020-10-14 17:48:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:07,881 INFO L225 Difference]: With dead ends: 65 [2020-10-14 17:48:07,881 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 17:48:07,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:48:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 17:48:07,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 17:48:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 17:48:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-14 17:48:07,887 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 45 [2020-10-14 17:48:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:07,888 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-14 17:48:07,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:48:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-14 17:48:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 17:48:07,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:07,889 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:07,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 17:48:07,890 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:07,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1130681338, now seen corresponding path program 16 times [2020-10-14 17:48:07,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:07,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330272363] [2020-10-14 17:48:07,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:07,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:08,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:08,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 17:48:08,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:08,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-14 17:48:08,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:08,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:08,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:48:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:08,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 17:48:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:08,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:08,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:08,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:08,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:08,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:08,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:08,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:08,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:08,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:08,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330272363] [2020-10-14 17:48:08,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:08,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:48:08,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399759443] [2020-10-14 17:48:08,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:48:08,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:08,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:48:08,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:48:08,903 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 20 states. [2020-10-14 17:48:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:09,025 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-10-14 17:48:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:48:09,026 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 47 [2020-10-14 17:48:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:09,026 INFO L225 Difference]: With dead ends: 67 [2020-10-14 17:48:09,027 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 17:48:09,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:48:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 17:48:09,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 17:48:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 17:48:09,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-14 17:48:09,036 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 47 [2020-10-14 17:48:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:09,037 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-14 17:48:09,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:48:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-14 17:48:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 17:48:09,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:09,041 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:09,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 17:48:09,042 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:09,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:09,042 INFO L82 PathProgramCache]: Analyzing trace with hash 71911908, now seen corresponding path program 17 times [2020-10-14 17:48:09,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:09,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183759560] [2020-10-14 17:48:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:09,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:09,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:09,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 17:48:09,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-14 17:48:09,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:09,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:48:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 17:48:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:10,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:10,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:10,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:10,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:10,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:10,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:10,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:10,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:10,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:10,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:10,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:10,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183759560] [2020-10-14 17:48:10,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:10,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:48:10,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895686169] [2020-10-14 17:48:10,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:48:10,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:10,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:48:10,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:48:10,124 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 21 states. [2020-10-14 17:48:10,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:10,277 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-10-14 17:48:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 17:48:10,277 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2020-10-14 17:48:10,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:10,278 INFO L225 Difference]: With dead ends: 69 [2020-10-14 17:48:10,278 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 17:48:10,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:48:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 17:48:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 17:48:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 17:48:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-10-14 17:48:10,287 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 49 [2020-10-14 17:48:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:10,287 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-10-14 17:48:10,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:48:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-10-14 17:48:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 17:48:10,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:10,289 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:10,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 17:48:10,289 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:10,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:10,290 INFO L82 PathProgramCache]: Analyzing trace with hash 417818690, now seen corresponding path program 18 times [2020-10-14 17:48:10,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:10,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444376531] [2020-10-14 17:48:10,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:11,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:11,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 17:48:11,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:11,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-14 17:48:11,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:11,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:48:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 17:48:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:11,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:11,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:11,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:11,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:11,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:11,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:11,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:11,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444376531] [2020-10-14 17:48:11,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:11,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:48:11,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649816060] [2020-10-14 17:48:11,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:48:11,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:11,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:48:11,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:48:11,412 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 22 states. [2020-10-14 17:48:11,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:11,526 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-10-14 17:48:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 17:48:11,526 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-14 17:48:11,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:11,527 INFO L225 Difference]: With dead ends: 71 [2020-10-14 17:48:11,527 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 17:48:11,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:48:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 17:48:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 17:48:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 17:48:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-10-14 17:48:11,533 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 51 [2020-10-14 17:48:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:11,533 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-10-14 17:48:11,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:48:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-10-14 17:48:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 17:48:11,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:11,534 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:11,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 17:48:11,535 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:11,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:11,535 INFO L82 PathProgramCache]: Analyzing trace with hash 2121754400, now seen corresponding path program 19 times [2020-10-14 17:48:11,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:11,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39181701] [2020-10-14 17:48:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:11,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:12,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:12,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 17:48:12,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:12,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-10-14 17:48:12,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:12,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:48:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 17:48:12,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:12,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:12,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:12,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:12,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:12,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:12,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:12,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:12,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:12,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39181701] [2020-10-14 17:48:12,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:12,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:48:12,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812980632] [2020-10-14 17:48:12,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:48:12,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:12,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:48:12,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:48:12,713 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 23 states. [2020-10-14 17:48:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:12,897 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-10-14 17:48:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:48:12,898 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 53 [2020-10-14 17:48:12,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:12,899 INFO L225 Difference]: With dead ends: 73 [2020-10-14 17:48:12,899 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 17:48:12,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:48:12,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 17:48:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 17:48:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 17:48:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-14 17:48:12,907 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 53 [2020-10-14 17:48:12,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:12,908 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-14 17:48:12,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:48:12,908 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-14 17:48:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 17:48:12,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:12,909 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:12,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 17:48:12,910 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:12,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1073535362, now seen corresponding path program 20 times [2020-10-14 17:48:12,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:12,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425229436] [2020-10-14 17:48:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:12,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:14,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:14,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 17:48:14,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:14,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-10-14 17:48:14,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:14,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:48:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 17:48:14,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:14,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:14,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:14,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:14,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:14,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:14,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:14,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:14,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:14,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425229436] [2020-10-14 17:48:14,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:14,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:48:14,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758029529] [2020-10-14 17:48:14,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:48:14,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:14,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:48:14,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:48:14,619 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 24 states. [2020-10-14 17:48:14,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:14,782 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2020-10-14 17:48:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 17:48:14,782 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2020-10-14 17:48:14,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:14,783 INFO L225 Difference]: With dead ends: 75 [2020-10-14 17:48:14,783 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 17:48:14,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:48:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 17:48:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 17:48:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 17:48:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-14 17:48:14,787 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 55 [2020-10-14 17:48:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:14,788 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-14 17:48:14,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:48:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-14 17:48:14,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:48:14,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:14,788 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:14,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 17:48:14,789 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:14,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:14,789 INFO L82 PathProgramCache]: Analyzing trace with hash -845380004, now seen corresponding path program 21 times [2020-10-14 17:48:14,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:14,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909717112] [2020-10-14 17:48:14,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:14,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:15,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:15,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 17:48:15,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:15,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 967 [2020-10-14 17:48:15,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:15,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:15,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:48:15,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:15,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 17:48:15,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:16,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:16,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:16,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:16,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:16,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909717112] [2020-10-14 17:48:16,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:16,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:48:16,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440215974] [2020-10-14 17:48:16,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:48:16,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:16,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:48:16,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:48:16,088 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 25 states. [2020-10-14 17:48:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:16,264 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2020-10-14 17:48:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:48:16,267 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-10-14 17:48:16,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:16,268 INFO L225 Difference]: With dead ends: 77 [2020-10-14 17:48:16,268 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 17:48:16,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:48:16,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 17:48:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 17:48:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 17:48:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-10-14 17:48:16,274 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 57 [2020-10-14 17:48:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:16,274 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-10-14 17:48:16,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:48:16,274 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-10-14 17:48:16,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 17:48:16,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:16,275 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:16,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 17:48:16,275 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:16,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:16,276 INFO L82 PathProgramCache]: Analyzing trace with hash -631413062, now seen corresponding path program 22 times [2020-10-14 17:48:16,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:16,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789443451] [2020-10-14 17:48:16,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:17,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:17,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 17:48:17,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-14 17:48:17,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:17,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:48:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 17:48:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:17,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:17,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:17,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:17,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:17,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:17,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:17,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:17,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789443451] [2020-10-14 17:48:17,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:17,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:48:17,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058431409] [2020-10-14 17:48:17,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:48:17,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:17,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:48:17,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:48:17,718 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 26 states. [2020-10-14 17:48:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:17,839 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2020-10-14 17:48:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:48:17,840 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 59 [2020-10-14 17:48:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:17,840 INFO L225 Difference]: With dead ends: 79 [2020-10-14 17:48:17,841 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 17:48:17,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:48:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 17:48:17,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 17:48:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 17:48:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-10-14 17:48:17,845 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 59 [2020-10-14 17:48:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:17,845 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-10-14 17:48:17,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:48:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-10-14 17:48:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 17:48:17,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:17,846 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:17,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 17:48:17,847 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:17,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1167612008, now seen corresponding path program 23 times [2020-10-14 17:48:17,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:17,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273566132] [2020-10-14 17:48:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:17,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:18,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:18,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 17:48:18,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-14 17:48:18,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:18,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:48:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 17:48:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:19,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:19,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:19,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:19,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:19,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:19,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273566132] [2020-10-14 17:48:19,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:19,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:48:19,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900074772] [2020-10-14 17:48:19,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:48:19,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:19,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:48:19,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:48:19,268 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 27 states. [2020-10-14 17:48:19,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:19,462 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-10-14 17:48:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:48:19,463 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 61 [2020-10-14 17:48:19,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:19,464 INFO L225 Difference]: With dead ends: 81 [2020-10-14 17:48:19,464 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 17:48:19,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:48:19,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 17:48:19,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 17:48:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 17:48:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-10-14 17:48:19,468 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 61 [2020-10-14 17:48:19,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:19,469 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-10-14 17:48:19,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:48:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-10-14 17:48:19,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 17:48:19,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:19,469 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:19,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 17:48:19,470 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:19,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:19,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1058723594, now seen corresponding path program 24 times [2020-10-14 17:48:19,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:19,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770759162] [2020-10-14 17:48:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:20,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:20,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 17:48:20,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:20,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-10-14 17:48:20,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:20,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:48:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:20,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 17:48:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:20,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:20,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:20,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:20,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:20,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:20,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:20,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:20,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:20,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:20,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770759162] [2020-10-14 17:48:20,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:20,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:48:20,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992736665] [2020-10-14 17:48:20,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:48:20,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:20,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:48:20,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:48:20,754 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 28 states. [2020-10-14 17:48:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:20,996 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2020-10-14 17:48:20,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:48:20,997 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 63 [2020-10-14 17:48:20,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:20,998 INFO L225 Difference]: With dead ends: 83 [2020-10-14 17:48:20,998 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 17:48:21,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:48:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 17:48:21,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-14 17:48:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 17:48:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-14 17:48:21,004 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 63 [2020-10-14 17:48:21,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:21,005 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-14 17:48:21,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:48:21,005 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-14 17:48:21,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 17:48:21,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:21,006 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:21,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 17:48:21,007 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:21,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:21,007 INFO L82 PathProgramCache]: Analyzing trace with hash 503827156, now seen corresponding path program 25 times [2020-10-14 17:48:21,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:21,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549400265] [2020-10-14 17:48:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:21,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:21,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:21,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 17:48:21,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:21,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-14 17:48:21,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:21,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:48:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:21,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 17:48:21,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:22,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:22,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:22,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:22,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:22,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:22,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:22,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:22,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:22,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:22,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:22,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549400265] [2020-10-14 17:48:22,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:22,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:48:22,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609756387] [2020-10-14 17:48:22,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:48:22,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:22,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:48:22,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:48:22,390 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 29 states. [2020-10-14 17:48:22,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:22,590 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2020-10-14 17:48:22,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 17:48:22,590 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 65 [2020-10-14 17:48:22,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:22,591 INFO L225 Difference]: With dead ends: 85 [2020-10-14 17:48:22,591 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 17:48:22,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:48:22,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 17:48:22,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 17:48:22,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 17:48:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-14 17:48:22,600 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 65 [2020-10-14 17:48:22,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:22,601 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-14 17:48:22,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:48:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-14 17:48:22,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 17:48:22,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:22,601 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:22,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 17:48:22,602 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:22,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:22,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1123455694, now seen corresponding path program 26 times [2020-10-14 17:48:22,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:22,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330216188] [2020-10-14 17:48:22,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:22,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:23,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:23,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 17:48:23,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-14 17:48:23,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:23,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:48:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 17:48:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:23,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:23,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:23,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:23,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:23,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:23,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:23,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:23,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:23,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330216188] [2020-10-14 17:48:23,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:23,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:48:23,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938708902] [2020-10-14 17:48:23,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:48:23,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:23,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:48:23,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:48:23,856 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 30 states. [2020-10-14 17:48:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:24,067 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2020-10-14 17:48:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:48:24,067 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 67 [2020-10-14 17:48:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:24,069 INFO L225 Difference]: With dead ends: 87 [2020-10-14 17:48:24,069 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 17:48:24,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:48:24,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 17:48:24,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 17:48:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 17:48:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-10-14 17:48:24,074 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 67 [2020-10-14 17:48:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:24,074 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-10-14 17:48:24,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:48:24,074 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-10-14 17:48:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 17:48:24,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:24,075 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:24,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 17:48:24,075 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:24,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:24,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1574178800, now seen corresponding path program 27 times [2020-10-14 17:48:24,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:24,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717021270] [2020-10-14 17:48:24,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:24,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:24,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:25,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:25,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 17:48:25,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-14 17:48:25,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:25,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 17:48:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 17:48:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:25,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:25,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:25,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:25,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:25,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:25,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:25,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717021270] [2020-10-14 17:48:25,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:25,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 17:48:25,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380684333] [2020-10-14 17:48:25,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 17:48:25,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:25,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 17:48:25,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:48:25,570 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 31 states. [2020-10-14 17:48:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:25,801 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2020-10-14 17:48:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:48:25,802 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 69 [2020-10-14 17:48:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:25,803 INFO L225 Difference]: With dead ends: 89 [2020-10-14 17:48:25,803 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 17:48:25,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:48:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 17:48:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 17:48:25,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 17:48:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-10-14 17:48:25,809 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 69 [2020-10-14 17:48:25,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:25,809 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-10-14 17:48:25,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 17:48:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-10-14 17:48:25,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 17:48:25,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:25,810 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:25,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 17:48:25,810 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:25,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:25,811 INFO L82 PathProgramCache]: Analyzing trace with hash -927386770, now seen corresponding path program 28 times [2020-10-14 17:48:25,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:25,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471505888] [2020-10-14 17:48:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:25,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:26,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:26,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 17:48:26,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:26,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-10-14 17:48:26,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:26,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:26,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:48:26,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:26,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 17:48:26,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:27,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:27,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:27,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:27,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:27,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:27,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:27,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:27,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:27,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:27,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:27,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:27,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471505888] [2020-10-14 17:48:27,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:27,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:48:27,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754637977] [2020-10-14 17:48:27,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:48:27,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:27,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:48:27,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:48:27,362 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 32 states. [2020-10-14 17:48:27,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:27,488 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2020-10-14 17:48:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 17:48:27,488 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 71 [2020-10-14 17:48:27,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:27,489 INFO L225 Difference]: With dead ends: 91 [2020-10-14 17:48:27,490 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 17:48:27,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:48:27,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 17:48:27,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 17:48:27,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 17:48:27,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-10-14 17:48:27,494 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 71 [2020-10-14 17:48:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:27,494 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-10-14 17:48:27,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:48:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-10-14 17:48:27,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 17:48:27,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:27,495 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:27,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 17:48:27,495 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:27,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:27,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2130503860, now seen corresponding path program 29 times [2020-10-14 17:48:27,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:27,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554071057] [2020-10-14 17:48:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:27,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:28,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:28,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 17:48:28,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:28,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-10-14 17:48:28,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:28,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 17:48:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 17:48:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:28,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:28,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:28,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:28,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:28,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:28,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:28,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:28,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:28,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:28,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:28,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:28,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554071057] [2020-10-14 17:48:28,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:28,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 17:48:28,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706483075] [2020-10-14 17:48:28,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 17:48:28,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 17:48:28,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:48:28,909 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 33 states. [2020-10-14 17:48:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:29,149 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2020-10-14 17:48:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 17:48:29,150 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 73 [2020-10-14 17:48:29,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:29,151 INFO L225 Difference]: With dead ends: 93 [2020-10-14 17:48:29,151 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 17:48:29,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:48:29,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 17:48:29,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 17:48:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 17:48:29,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-10-14 17:48:29,157 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 73 [2020-10-14 17:48:29,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:29,157 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-10-14 17:48:29,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 17:48:29,158 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-10-14 17:48:29,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 17:48:29,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:29,158 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:29,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 17:48:29,159 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:29,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1315142570, now seen corresponding path program 30 times [2020-10-14 17:48:29,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:29,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269446331] [2020-10-14 17:48:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:29,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:30,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:30,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 17:48:30,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-10-14 17:48:30,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:30,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:48:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 17:48:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:30,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:30,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:30,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:30,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:30,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:48:30,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:30,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:30,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:48:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:30,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269446331] [2020-10-14 17:48:30,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:30,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 17:48:30,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997751645] [2020-10-14 17:48:30,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 17:48:30,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:30,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 17:48:30,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:48:30,728 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 34 states. [2020-10-14 17:48:30,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:30,901 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2020-10-14 17:48:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:48:30,902 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 75 [2020-10-14 17:48:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:30,903 INFO L225 Difference]: With dead ends: 95 [2020-10-14 17:48:30,903 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 17:48:30,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 17:48:30,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 17:48:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 17:48:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 17:48:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-14 17:48:30,909 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 75 [2020-10-14 17:48:30,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:30,909 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-14 17:48:30,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 17:48:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-14 17:48:30,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 17:48:30,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:30,911 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:30,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 17:48:30,912 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:30,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1161576584, now seen corresponding path program 31 times [2020-10-14 17:48:30,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:30,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151232189] [2020-10-14 17:48:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:30,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:30,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:32,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:32,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 17:48:32,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:32,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-14 17:48:32,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:32,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 17:48:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:32,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 17:48:32,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:32,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:32,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:32,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:32,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:32,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:32,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:32,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:32,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:48:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:32,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151232189] [2020-10-14 17:48:32,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:32,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 17:48:32,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355291233] [2020-10-14 17:48:32,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 17:48:32,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:32,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 17:48:32,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:48:32,641 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 35 states. [2020-10-14 17:48:32,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:32,899 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2020-10-14 17:48:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 17:48:32,900 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 77 [2020-10-14 17:48:32,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:32,900 INFO L225 Difference]: With dead ends: 97 [2020-10-14 17:48:32,901 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 17:48:32,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:48:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 17:48:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 17:48:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 17:48:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2020-10-14 17:48:32,905 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 77 [2020-10-14 17:48:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:32,906 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2020-10-14 17:48:32,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 17:48:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2020-10-14 17:48:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 17:48:32,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:32,907 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:32,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 17:48:32,907 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:32,908 INFO L82 PathProgramCache]: Analyzing trace with hash -386447898, now seen corresponding path program 32 times [2020-10-14 17:48:32,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:32,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121559867] [2020-10-14 17:48:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:32,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:34,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:34,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 17:48:34,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:34,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1299 [2020-10-14 17:48:34,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:34,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 17:48:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 17:48:34,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:34,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:34,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:34,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:34,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:34,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:34,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:34,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:34,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:34,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121559867] [2020-10-14 17:48:34,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:34,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 17:48:34,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237716144] [2020-10-14 17:48:34,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 17:48:34,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:34,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 17:48:34,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 17:48:34,883 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 36 states. [2020-10-14 17:48:35,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:35,140 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2020-10-14 17:48:35,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:48:35,140 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 79 [2020-10-14 17:48:35,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:35,141 INFO L225 Difference]: With dead ends: 99 [2020-10-14 17:48:35,142 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 17:48:35,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 17:48:35,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 17:48:35,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 17:48:35,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 17:48:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-10-14 17:48:35,147 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 79 [2020-10-14 17:48:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:35,147 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-10-14 17:48:35,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 17:48:35,148 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-10-14 17:48:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 17:48:35,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:35,148 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:35,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 17:48:35,149 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:35,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1979290684, now seen corresponding path program 33 times [2020-10-14 17:48:35,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:35,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639953657] [2020-10-14 17:48:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:36,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:36,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 17:48:36,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:36,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-10-14 17:48:36,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:36,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 17:48:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 17:48:36,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:36,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:36,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:36,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:36,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:36,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:36,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:36,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:36,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639953657] [2020-10-14 17:48:36,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:36,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 17:48:36,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960607071] [2020-10-14 17:48:36,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 17:48:36,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:36,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 17:48:36,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:48:36,880 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 37 states. [2020-10-14 17:48:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:37,135 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-10-14 17:48:37,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 17:48:37,135 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 81 [2020-10-14 17:48:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:37,136 INFO L225 Difference]: With dead ends: 101 [2020-10-14 17:48:37,136 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 17:48:37,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:48:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 17:48:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 17:48:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 17:48:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-14 17:48:37,146 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 81 [2020-10-14 17:48:37,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:37,147 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-14 17:48:37,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 17:48:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-14 17:48:37,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 17:48:37,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:37,148 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:37,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 17:48:37,148 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:37,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:37,148 INFO L82 PathProgramCache]: Analyzing trace with hash 602116642, now seen corresponding path program 34 times [2020-10-14 17:48:37,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:37,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52722526] [2020-10-14 17:48:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:37,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:37,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 17:48:37,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:37,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-10-14 17:48:37,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:37,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 17:48:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 17:48:37,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:38,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:38,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:38,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:38,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:38,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:38,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:38,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:38,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52722526] [2020-10-14 17:48:38,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:38,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 17:48:38,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136122744] [2020-10-14 17:48:38,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 17:48:38,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:38,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 17:48:38,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:48:38,659 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 38 states. [2020-10-14 17:48:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:38,905 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2020-10-14 17:48:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:48:38,906 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 83 [2020-10-14 17:48:38,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:38,906 INFO L225 Difference]: With dead ends: 103 [2020-10-14 17:48:38,907 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 17:48:38,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:48:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 17:48:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-14 17:48:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 17:48:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-14 17:48:38,911 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 83 [2020-10-14 17:48:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:38,911 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-14 17:48:38,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 17:48:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-14 17:48:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 17:48:38,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:38,914 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:38,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 17:48:38,914 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1156540160, now seen corresponding path program 35 times [2020-10-14 17:48:38,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:38,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642715804] [2020-10-14 17:48:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:38,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:39,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:39,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 17:48:39,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-14 17:48:39,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:39,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 17:48:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 17:48:39,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:40,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:40,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:40,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:40,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:40,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:40,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:40,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:40,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:40,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642715804] [2020-10-14 17:48:40,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:40,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 17:48:40,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351389942] [2020-10-14 17:48:40,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 17:48:40,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:40,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 17:48:40,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:48:40,530 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 39 states. [2020-10-14 17:48:40,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:40,802 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2020-10-14 17:48:40,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 17:48:40,802 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 85 [2020-10-14 17:48:40,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:40,803 INFO L225 Difference]: With dead ends: 105 [2020-10-14 17:48:40,804 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 17:48:40,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:48:40,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 17:48:40,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 17:48:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 17:48:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2020-10-14 17:48:40,809 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 85 [2020-10-14 17:48:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:40,810 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2020-10-14 17:48:40,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 17:48:40,810 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2020-10-14 17:48:40,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 17:48:40,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:40,811 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:40,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 17:48:40,811 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:40,812 INFO L82 PathProgramCache]: Analyzing trace with hash 991387742, now seen corresponding path program 36 times [2020-10-14 17:48:40,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:40,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799158762] [2020-10-14 17:48:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:40,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:40,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:41,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:41,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 17:48:41,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:41,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 874 [2020-10-14 17:48:41,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:41,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 17:48:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 17:48:41,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:42,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:42,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:42,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:42,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:42,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:48:42,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:42,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:42,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:42,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799158762] [2020-10-14 17:48:42,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:42,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 17:48:42,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175397605] [2020-10-14 17:48:42,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 17:48:42,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:42,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 17:48:42,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:48:42,464 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 40 states. [2020-10-14 17:48:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:42,764 INFO L93 Difference]: Finished difference Result 107 states and 110 transitions. [2020-10-14 17:48:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 17:48:42,765 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 87 [2020-10-14 17:48:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:42,766 INFO L225 Difference]: With dead ends: 107 [2020-10-14 17:48:42,766 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 17:48:42,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:48:42,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 17:48:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-14 17:48:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 17:48:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-14 17:48:42,775 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 87 [2020-10-14 17:48:42,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:42,775 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-14 17:48:42,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 17:48:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-14 17:48:42,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 17:48:42,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:42,777 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:42,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 17:48:42,777 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:42,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:42,777 INFO L82 PathProgramCache]: Analyzing trace with hash -729167812, now seen corresponding path program 37 times [2020-10-14 17:48:42,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:42,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086582965] [2020-10-14 17:48:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:42,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:42,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:43,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:43,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 17:48:43,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:43,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-14 17:48:43,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:43,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 17:48:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:43,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 17:48:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:44,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:44,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:44,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:44,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:44,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:44,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:44,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:44,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086582965] [2020-10-14 17:48:44,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:44,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 17:48:44,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128312831] [2020-10-14 17:48:44,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 17:48:44,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:44,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 17:48:44,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:48:44,533 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 41 states. [2020-10-14 17:48:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:44,690 INFO L93 Difference]: Finished difference Result 109 states and 112 transitions. [2020-10-14 17:48:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 17:48:44,690 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 89 [2020-10-14 17:48:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:44,692 INFO L225 Difference]: With dead ends: 109 [2020-10-14 17:48:44,692 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 17:48:44,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 17:48:44,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 17:48:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 17:48:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 17:48:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2020-10-14 17:48:44,699 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 89 [2020-10-14 17:48:44,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:44,699 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2020-10-14 17:48:44,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 17:48:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2020-10-14 17:48:44,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 17:48:44,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:44,701 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:44,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 17:48:44,701 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:44,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:44,701 INFO L82 PathProgramCache]: Analyzing trace with hash -620646246, now seen corresponding path program 38 times [2020-10-14 17:48:44,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:44,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828433819] [2020-10-14 17:48:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:45,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:45,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 17:48:45,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 959 [2020-10-14 17:48:45,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:45,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 17:48:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 17:48:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:46,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:46,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:46,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:46,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:46,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:46,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:46,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:46,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:46,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828433819] [2020-10-14 17:48:46,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:46,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 17:48:46,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068183249] [2020-10-14 17:48:46,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 17:48:46,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:46,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 17:48:46,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 17:48:46,497 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 42 states. [2020-10-14 17:48:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:46,783 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2020-10-14 17:48:46,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 17:48:46,783 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 91 [2020-10-14 17:48:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:46,785 INFO L225 Difference]: With dead ends: 111 [2020-10-14 17:48:46,785 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 17:48:46,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 17:48:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 17:48:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-14 17:48:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 17:48:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-14 17:48:46,790 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 91 [2020-10-14 17:48:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:46,791 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-14 17:48:46,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 17:48:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-14 17:48:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 17:48:46,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:46,792 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:46,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 17:48:46,792 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:46,793 INFO L82 PathProgramCache]: Analyzing trace with hash 589363576, now seen corresponding path program 39 times [2020-10-14 17:48:46,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:46,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963057574] [2020-10-14 17:48:46,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:46,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:47,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:47,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 17:48:47,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:47,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-10-14 17:48:47,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:47,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:47,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 17:48:47,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:47,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 17:48:47,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:48,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:48,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:48,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:48,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:48,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:48,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:48,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963057574] [2020-10-14 17:48:48,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:48,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 17:48:48,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740791482] [2020-10-14 17:48:48,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 17:48:48,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:48,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 17:48:48,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:48:48,696 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 43 states. [2020-10-14 17:48:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:48,863 INFO L93 Difference]: Finished difference Result 113 states and 116 transitions. [2020-10-14 17:48:48,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 17:48:48,864 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 93 [2020-10-14 17:48:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:48,865 INFO L225 Difference]: With dead ends: 113 [2020-10-14 17:48:48,865 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 17:48:48,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:48:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 17:48:48,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-14 17:48:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 17:48:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-14 17:48:48,871 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 93 [2020-10-14 17:48:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:48,872 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-14 17:48:48,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 17:48:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-14 17:48:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 17:48:48,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:48,873 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:48,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 17:48:48,873 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:48,873 INFO L82 PathProgramCache]: Analyzing trace with hash -527334698, now seen corresponding path program 40 times [2020-10-14 17:48:48,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:48,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297392772] [2020-10-14 17:48:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:49,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:49,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 17:48:50,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-14 17:48:50,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:50,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 17:48:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 17:48:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:50,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:50,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:50,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:50,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:50,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:50,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:50,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:50,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297392772] [2020-10-14 17:48:50,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:50,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 17:48:50,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521608968] [2020-10-14 17:48:50,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 17:48:50,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:50,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 17:48:50,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 17:48:50,938 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 44 states. [2020-10-14 17:48:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:51,243 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2020-10-14 17:48:51,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 17:48:51,244 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 95 [2020-10-14 17:48:51,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:51,245 INFO L225 Difference]: With dead ends: 115 [2020-10-14 17:48:51,245 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 17:48:51,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 17:48:51,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 17:48:51,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-14 17:48:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 17:48:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2020-10-14 17:48:51,250 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 95 [2020-10-14 17:48:51,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:51,251 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2020-10-14 17:48:51,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 17:48:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2020-10-14 17:48:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 17:48:51,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:51,252 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:51,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 17:48:51,252 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:51,252 INFO L82 PathProgramCache]: Analyzing trace with hash 67447988, now seen corresponding path program 41 times [2020-10-14 17:48:51,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:51,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428494185] [2020-10-14 17:48:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:51,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:52,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:52,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 17:48:52,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-14 17:48:52,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:52,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 17:48:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:52,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 17:48:52,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:53,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:53,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:53,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:53,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:53,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:53,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:53,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428494185] [2020-10-14 17:48:53,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:53,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 17:48:53,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67047114] [2020-10-14 17:48:53,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 17:48:53,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:53,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 17:48:53,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 17:48:53,458 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 45 states. [2020-10-14 17:48:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:53,736 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2020-10-14 17:48:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 17:48:53,737 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 97 [2020-10-14 17:48:53,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:53,738 INFO L225 Difference]: With dead ends: 117 [2020-10-14 17:48:53,738 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 17:48:53,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 17:48:53,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 17:48:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-14 17:48:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 17:48:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-14 17:48:53,742 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 97 [2020-10-14 17:48:53,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:53,743 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-14 17:48:53,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 17:48:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-14 17:48:53,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 17:48:53,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:53,744 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:53,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 17:48:53,744 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:53,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:53,744 INFO L82 PathProgramCache]: Analyzing trace with hash 422958866, now seen corresponding path program 42 times [2020-10-14 17:48:53,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:53,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165372333] [2020-10-14 17:48:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:53,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 17:48:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:54,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1176 [2020-10-14 17:48:54,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:54,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 17:48:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 17:48:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:55,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:55,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:55,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:55,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:55,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:55,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:55,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:55,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165372333] [2020-10-14 17:48:55,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:55,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 17:48:55,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494628532] [2020-10-14 17:48:55,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 17:48:55,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:55,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 17:48:55,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 17:48:55,936 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 46 states. [2020-10-14 17:48:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:56,185 INFO L93 Difference]: Finished difference Result 119 states and 122 transitions. [2020-10-14 17:48:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 17:48:56,185 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 99 [2020-10-14 17:48:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:56,186 INFO L225 Difference]: With dead ends: 119 [2020-10-14 17:48:56,186 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 17:48:56,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 17:48:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 17:48:56,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-14 17:48:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 17:48:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-14 17:48:56,192 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 99 [2020-10-14 17:48:56,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:56,192 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-14 17:48:56,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 17:48:56,192 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-14 17:48:56,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 17:48:56,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:56,193 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:56,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 17:48:56,193 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:56,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1528471056, now seen corresponding path program 43 times [2020-10-14 17:48:56,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:56,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7772174] [2020-10-14 17:48:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:56,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:56,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:57,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:57,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 17:48:57,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:48:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-14 17:48:57,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:57,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 17:48:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:48:57,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 17:48:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:58,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:48:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:48:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:48:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:48:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:48:58,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7772174] [2020-10-14 17:48:58,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:48:58,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-14 17:48:58,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124797853] [2020-10-14 17:48:58,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-14 17:48:58,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:48:58,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-14 17:48:58,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:48:58,535 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 47 states. [2020-10-14 17:48:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:48:58,783 INFO L93 Difference]: Finished difference Result 121 states and 124 transitions. [2020-10-14 17:48:58,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 17:48:58,784 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 101 [2020-10-14 17:48:58,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:48:58,785 INFO L225 Difference]: With dead ends: 121 [2020-10-14 17:48:58,785 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 17:48:58,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:48:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 17:48:58,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-14 17:48:58,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 17:48:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2020-10-14 17:48:58,793 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 101 [2020-10-14 17:48:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:48:58,793 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2020-10-14 17:48:58,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-14 17:48:58,794 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2020-10-14 17:48:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 17:48:58,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:48:58,794 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:48:58,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 17:48:58,795 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:48:58,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:48:58,795 INFO L82 PathProgramCache]: Analyzing trace with hash 48082254, now seen corresponding path program 44 times [2020-10-14 17:48:58,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:48:58,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633988381] [2020-10-14 17:48:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:48:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:48:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:48:58,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:00,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:00,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 17:49:00,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1413 [2020-10-14 17:49:00,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:00,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 17:49:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:00,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 17:49:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:01,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:01,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:01,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:01,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:01,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:01,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:01,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:01,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:01,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:01,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633988381] [2020-10-14 17:49:01,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:01,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-14 17:49:01,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977025979] [2020-10-14 17:49:01,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-14 17:49:01,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:01,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-14 17:49:01,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 17:49:01,319 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 48 states. [2020-10-14 17:49:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:01,594 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2020-10-14 17:49:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 17:49:01,594 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 103 [2020-10-14 17:49:01,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:01,596 INFO L225 Difference]: With dead ends: 123 [2020-10-14 17:49:01,596 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 17:49:01,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 17:49:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 17:49:01,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-14 17:49:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 17:49:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2020-10-14 17:49:01,602 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 103 [2020-10-14 17:49:01,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:01,602 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2020-10-14 17:49:01,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-14 17:49:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2020-10-14 17:49:01,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 17:49:01,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:01,603 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:01,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 17:49:01,603 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:01,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1007642324, now seen corresponding path program 45 times [2020-10-14 17:49:01,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:01,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504751778] [2020-10-14 17:49:01,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:01,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:02,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:02,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 17:49:02,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1290 [2020-10-14 17:49:02,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:02,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 17:49:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 17:49:02,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:04,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:04,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:04,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:04,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:04,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:04,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:04,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:04,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:04,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:04,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504751778] [2020-10-14 17:49:04,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:04,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-14 17:49:04,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480612713] [2020-10-14 17:49:04,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-14 17:49:04,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:04,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-14 17:49:04,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 17:49:04,057 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 49 states. [2020-10-14 17:49:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:04,386 INFO L93 Difference]: Finished difference Result 125 states and 128 transitions. [2020-10-14 17:49:04,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 17:49:04,387 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 105 [2020-10-14 17:49:04,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:04,388 INFO L225 Difference]: With dead ends: 125 [2020-10-14 17:49:04,388 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 17:49:04,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 17:49:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 17:49:04,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-14 17:49:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 17:49:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-14 17:49:04,396 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 105 [2020-10-14 17:49:04,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:04,397 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-14 17:49:04,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-14 17:49:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-14 17:49:04,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 17:49:04,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:04,398 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:04,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 17:49:04,399 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:04,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1946679926, now seen corresponding path program 46 times [2020-10-14 17:49:04,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:04,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735543970] [2020-10-14 17:49:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:04,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:06,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:06,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 17:49:06,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:06,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1876 [2020-10-14 17:49:06,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:06,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-14 17:49:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 17:49:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:07,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:07,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:07,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:07,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:07,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:07,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:07,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:07,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:07,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:07,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735543970] [2020-10-14 17:49:07,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:07,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-14 17:49:07,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231638072] [2020-10-14 17:49:07,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-14 17:49:07,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:07,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-14 17:49:07,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 17:49:07,499 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 50 states. [2020-10-14 17:49:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:07,863 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2020-10-14 17:49:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 17:49:07,863 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 107 [2020-10-14 17:49:07,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:07,864 INFO L225 Difference]: With dead ends: 127 [2020-10-14 17:49:07,865 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 17:49:07,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 17:49:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 17:49:07,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-14 17:49:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 17:49:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2020-10-14 17:49:07,870 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 107 [2020-10-14 17:49:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:07,870 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2020-10-14 17:49:07,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-14 17:49:07,871 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2020-10-14 17:49:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 17:49:07,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:07,871 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:07,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 17:49:07,872 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:07,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:07,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1876284008, now seen corresponding path program 47 times [2020-10-14 17:49:07,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:07,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768025492] [2020-10-14 17:49:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:07,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:09,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:09,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 17:49:09,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1527 [2020-10-14 17:49:09,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:09,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-14 17:49:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 17:49:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:10,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:10,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:10,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:10,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:10,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:10,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:10,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:10,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768025492] [2020-10-14 17:49:10,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:10,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-14 17:49:10,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128484654] [2020-10-14 17:49:10,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-14 17:49:10,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:10,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-14 17:49:10,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:49:10,674 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 51 states. [2020-10-14 17:49:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:10,946 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2020-10-14 17:49:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 17:49:10,947 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 109 [2020-10-14 17:49:10,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:10,948 INFO L225 Difference]: With dead ends: 129 [2020-10-14 17:49:10,948 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 17:49:10,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:49:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 17:49:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-14 17:49:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 17:49:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2020-10-14 17:49:10,954 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 109 [2020-10-14 17:49:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:10,955 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2020-10-14 17:49:10,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-14 17:49:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2020-10-14 17:49:10,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 17:49:10,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:10,956 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:10,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 17:49:10,957 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:10,957 INFO L82 PathProgramCache]: Analyzing trace with hash -747380794, now seen corresponding path program 48 times [2020-10-14 17:49:10,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:10,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806593098] [2020-10-14 17:49:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:11,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:12,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:12,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 17:49:12,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1550 [2020-10-14 17:49:12,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:12,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-14 17:49:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 17:49:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:13,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:13,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:13,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:13,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:13,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:13,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:13,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:13,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:13,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:13,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:13,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:49:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:13,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806593098] [2020-10-14 17:49:13,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:13,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-14 17:49:13,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181814260] [2020-10-14 17:49:13,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-14 17:49:13,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:13,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-14 17:49:13,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 17:49:13,817 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 52 states. [2020-10-14 17:49:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:14,214 INFO L93 Difference]: Finished difference Result 131 states and 134 transitions. [2020-10-14 17:49:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 17:49:14,214 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 111 [2020-10-14 17:49:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:14,216 INFO L225 Difference]: With dead ends: 131 [2020-10-14 17:49:14,216 INFO L226 Difference]: Without dead ends: 120 [2020-10-14 17:49:14,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 17:49:14,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-14 17:49:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-14 17:49:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 17:49:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-10-14 17:49:14,221 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 111 [2020-10-14 17:49:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:14,222 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-10-14 17:49:14,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-14 17:49:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-10-14 17:49:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 17:49:14,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:14,223 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:14,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 17:49:14,223 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:14,224 INFO L82 PathProgramCache]: Analyzing trace with hash -943452764, now seen corresponding path program 49 times [2020-10-14 17:49:14,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:14,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836970940] [2020-10-14 17:49:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:15,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:15,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 17:49:15,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1713 [2020-10-14 17:49:15,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:15,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 17:49:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 17:49:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:17,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:17,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:17,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:17,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:17,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:17,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836970940] [2020-10-14 17:49:17,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:17,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-14 17:49:17,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589860543] [2020-10-14 17:49:17,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-14 17:49:17,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:17,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-14 17:49:17,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 17:49:17,297 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 53 states. [2020-10-14 17:49:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:17,692 INFO L93 Difference]: Finished difference Result 133 states and 136 transitions. [2020-10-14 17:49:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-14 17:49:17,692 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 113 [2020-10-14 17:49:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:17,694 INFO L225 Difference]: With dead ends: 133 [2020-10-14 17:49:17,694 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 17:49:17,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 17:49:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 17:49:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-14 17:49:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 17:49:17,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2020-10-14 17:49:17,699 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 113 [2020-10-14 17:49:17,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:17,699 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2020-10-14 17:49:17,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-14 17:49:17,700 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2020-10-14 17:49:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 17:49:17,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:17,701 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:17,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 17:49:17,703 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:17,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:17,704 INFO L82 PathProgramCache]: Analyzing trace with hash -390054910, now seen corresponding path program 50 times [2020-10-14 17:49:17,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:17,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817051148] [2020-10-14 17:49:17,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:17,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:19,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:19,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 17:49:19,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-14 17:49:19,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:19,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-14 17:49:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 17:49:19,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:20,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:20,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:20,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:20,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:20,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:20,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:20,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:20,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817051148] [2020-10-14 17:49:20,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:20,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-14 17:49:20,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574862351] [2020-10-14 17:49:20,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-14 17:49:20,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:20,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-14 17:49:20,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 17:49:20,941 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 54 states. [2020-10-14 17:49:21,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:21,200 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2020-10-14 17:49:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-14 17:49:21,200 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 115 [2020-10-14 17:49:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:21,202 INFO L225 Difference]: With dead ends: 135 [2020-10-14 17:49:21,202 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 17:49:21,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 17:49:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 17:49:21,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-14 17:49:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 17:49:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-10-14 17:49:21,207 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 115 [2020-10-14 17:49:21,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:21,208 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-10-14 17:49:21,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-14 17:49:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-10-14 17:49:21,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 17:49:21,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:21,210 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:21,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 17:49:21,210 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:21,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1150661920, now seen corresponding path program 51 times [2020-10-14 17:49:21,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:21,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76000157] [2020-10-14 17:49:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:21,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:23,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:23,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 17:49:23,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1870 [2020-10-14 17:49:23,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:23,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-14 17:49:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 17:49:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:24,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:24,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:24,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:24,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:24,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:24,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:24,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:24,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:24,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76000157] [2020-10-14 17:49:24,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:24,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-14 17:49:24,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107090316] [2020-10-14 17:49:24,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-14 17:49:24,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:24,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-14 17:49:24,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:49:24,581 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 55 states. [2020-10-14 17:49:24,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:24,989 INFO L93 Difference]: Finished difference Result 137 states and 140 transitions. [2020-10-14 17:49:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-14 17:49:24,989 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 117 [2020-10-14 17:49:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:24,991 INFO L225 Difference]: With dead ends: 137 [2020-10-14 17:49:24,991 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 17:49:24,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:49:24,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 17:49:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-14 17:49:24,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 17:49:24,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-10-14 17:49:24,997 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 117 [2020-10-14 17:49:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:24,997 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-10-14 17:49:24,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-14 17:49:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-10-14 17:49:24,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 17:49:24,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:24,998 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:24,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 17:49:24,999 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:24,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:24,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1949558210, now seen corresponding path program 52 times [2020-10-14 17:49:24,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:24,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289870701] [2020-10-14 17:49:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:25,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:25,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:26,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:26,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 17:49:26,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1856 [2020-10-14 17:49:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:26,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-14 17:49:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 17:49:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:28,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:28,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:28,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:28,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:28,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:28,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:28,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:28,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289870701] [2020-10-14 17:49:28,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:28,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-14 17:49:28,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218525120] [2020-10-14 17:49:28,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-14 17:49:28,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:28,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-14 17:49:28,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 17:49:28,393 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 56 states. [2020-10-14 17:49:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:28,619 INFO L93 Difference]: Finished difference Result 139 states and 142 transitions. [2020-10-14 17:49:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-14 17:49:28,620 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 119 [2020-10-14 17:49:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:28,621 INFO L225 Difference]: With dead ends: 139 [2020-10-14 17:49:28,621 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 17:49:28,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 17:49:28,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 17:49:28,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-14 17:49:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 17:49:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2020-10-14 17:49:28,625 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 119 [2020-10-14 17:49:28,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:28,626 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2020-10-14 17:49:28,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-14 17:49:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2020-10-14 17:49:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 17:49:28,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:28,627 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:28,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 17:49:28,627 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:28,627 INFO L82 PathProgramCache]: Analyzing trace with hash -889746916, now seen corresponding path program 53 times [2020-10-14 17:49:28,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:28,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240752336] [2020-10-14 17:49:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:28,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:28,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:30,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:30,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 17:49:30,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:30,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-10-14 17:49:30,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:30,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-14 17:49:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:30,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 17:49:30,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:32,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:32,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:32,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:32,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:32,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:32,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:32,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:32,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:32,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:32,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:32,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:32,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:32,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:32,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240752336] [2020-10-14 17:49:32,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:32,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-14 17:49:32,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899191119] [2020-10-14 17:49:32,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-14 17:49:32,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:32,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-14 17:49:32,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 17:49:32,228 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 57 states. [2020-10-14 17:49:32,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:32,666 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2020-10-14 17:49:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-14 17:49:32,666 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 121 [2020-10-14 17:49:32,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:32,668 INFO L225 Difference]: With dead ends: 141 [2020-10-14 17:49:32,668 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 17:49:32,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 17:49:32,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 17:49:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-14 17:49:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 17:49:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2020-10-14 17:49:32,673 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 121 [2020-10-14 17:49:32,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:32,674 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2020-10-14 17:49:32,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-14 17:49:32,674 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2020-10-14 17:49:32,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 17:49:32,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:32,675 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:32,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 17:49:32,675 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:32,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:32,675 INFO L82 PathProgramCache]: Analyzing trace with hash -318342534, now seen corresponding path program 54 times [2020-10-14 17:49:32,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:32,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012307031] [2020-10-14 17:49:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:32,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:34,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:34,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 17:49:34,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2073 [2020-10-14 17:49:34,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:34,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-14 17:49:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 17:49:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:36,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:36,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:36,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:36,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:36,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:36,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:36,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:36,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:36,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:36,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:36,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012307031] [2020-10-14 17:49:36,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:36,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-14 17:49:36,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285138959] [2020-10-14 17:49:36,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-14 17:49:36,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:36,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-14 17:49:36,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 17:49:36,410 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 58 states. [2020-10-14 17:49:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:36,713 INFO L93 Difference]: Finished difference Result 143 states and 146 transitions. [2020-10-14 17:49:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-14 17:49:36,714 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 123 [2020-10-14 17:49:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:36,715 INFO L225 Difference]: With dead ends: 143 [2020-10-14 17:49:36,715 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 17:49:36,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 17:49:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 17:49:36,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-14 17:49:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 17:49:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2020-10-14 17:49:36,721 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 123 [2020-10-14 17:49:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:36,721 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2020-10-14 17:49:36,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-14 17:49:36,721 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2020-10-14 17:49:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 17:49:36,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:36,722 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:36,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 17:49:36,723 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:36,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:36,723 INFO L82 PathProgramCache]: Analyzing trace with hash -954545320, now seen corresponding path program 55 times [2020-10-14 17:49:36,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:36,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088344791] [2020-10-14 17:49:36,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:36,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:36,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:39,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:39,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 17:49:39,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:39,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2682 [2020-10-14 17:49:39,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:39,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-14 17:49:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:39,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 17:49:39,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:41,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:41,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:41,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:41,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:41,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:41,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:49:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:41,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088344791] [2020-10-14 17:49:41,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:41,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-14 17:49:41,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492551225] [2020-10-14 17:49:41,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-14 17:49:41,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:41,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-14 17:49:41,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 17:49:41,161 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 59 states. [2020-10-14 17:49:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:41,668 INFO L93 Difference]: Finished difference Result 145 states and 148 transitions. [2020-10-14 17:49:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-14 17:49:41,669 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 125 [2020-10-14 17:49:41,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:41,671 INFO L225 Difference]: With dead ends: 145 [2020-10-14 17:49:41,671 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 17:49:41,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 17:49:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 17:49:41,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-14 17:49:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 17:49:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2020-10-14 17:49:41,678 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 125 [2020-10-14 17:49:41,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:41,679 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2020-10-14 17:49:41,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-14 17:49:41,680 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2020-10-14 17:49:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 17:49:41,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:41,681 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:41,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 17:49:41,682 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:41,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:41,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1834900662, now seen corresponding path program 56 times [2020-10-14 17:49:41,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:41,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844382676] [2020-10-14 17:49:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 17:49:45,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3448 [2020-10-14 17:49:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:45,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-14 17:49:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 17:49:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:46,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:46,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:46,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:46,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:46,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:49:46,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:46,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:46,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844382676] [2020-10-14 17:49:46,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:46,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-14 17:49:46,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245185423] [2020-10-14 17:49:46,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-14 17:49:46,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:46,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-14 17:49:46,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 17:49:46,922 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 60 states. [2020-10-14 17:49:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:47,376 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2020-10-14 17:49:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-14 17:49:47,377 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 127 [2020-10-14 17:49:47,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:47,378 INFO L225 Difference]: With dead ends: 147 [2020-10-14 17:49:47,379 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 17:49:47,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 17:49:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 17:49:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-14 17:49:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 17:49:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2020-10-14 17:49:47,384 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 127 [2020-10-14 17:49:47,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:47,384 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2020-10-14 17:49:47,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-14 17:49:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2020-10-14 17:49:47,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 17:49:47,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:47,385 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:47,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 17:49:47,386 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:47,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:47,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1862070636, now seen corresponding path program 57 times [2020-10-14 17:49:47,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:47,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176304422] [2020-10-14 17:49:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:49,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:49,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 17:49:49,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2424 [2020-10-14 17:49:49,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:49,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-14 17:49:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 17:49:49,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:51,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:51,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:51,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:51,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:51,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:51,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:51,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:51,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:51,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:51,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:51,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176304422] [2020-10-14 17:49:51,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:51,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-14 17:49:51,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222839441] [2020-10-14 17:49:51,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-14 17:49:51,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:51,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-14 17:49:51,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 17:49:51,678 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 61 states. [2020-10-14 17:49:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:52,052 INFO L93 Difference]: Finished difference Result 149 states and 152 transitions. [2020-10-14 17:49:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-14 17:49:52,052 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 129 [2020-10-14 17:49:52,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:52,053 INFO L225 Difference]: With dead ends: 149 [2020-10-14 17:49:52,054 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 17:49:52,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 17:49:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 17:49:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-14 17:49:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 17:49:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2020-10-14 17:49:52,058 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 129 [2020-10-14 17:49:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:52,059 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2020-10-14 17:49:52,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-14 17:49:52,059 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2020-10-14 17:49:52,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 17:49:52,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:52,060 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:52,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 17:49:52,060 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:52,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1581433074, now seen corresponding path program 58 times [2020-10-14 17:49:52,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:52,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128358069] [2020-10-14 17:49:52,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:52,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:54,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:54,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 17:49:54,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2494 [2020-10-14 17:49:54,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:54,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-14 17:49:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 17:49:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:56,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:49:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:56,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:49:56,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:49:56,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:49:56,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:56,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:49:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:49:56,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:49:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:49:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:49:56,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128358069] [2020-10-14 17:49:56,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:49:56,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-14 17:49:56,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198406078] [2020-10-14 17:49:56,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-14 17:49:56,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:49:56,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-14 17:49:56,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 17:49:56,487 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 62 states. [2020-10-14 17:49:56,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:49:56,772 INFO L93 Difference]: Finished difference Result 151 states and 154 transitions. [2020-10-14 17:49:56,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-14 17:49:56,772 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 131 [2020-10-14 17:49:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:49:56,774 INFO L225 Difference]: With dead ends: 151 [2020-10-14 17:49:56,774 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 17:49:56,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 17:49:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 17:49:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-10-14 17:49:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 17:49:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2020-10-14 17:49:56,779 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 131 [2020-10-14 17:49:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:49:56,779 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2020-10-14 17:49:56,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-14 17:49:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2020-10-14 17:49:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 17:49:56,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:49:56,781 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:49:56,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 17:49:56,781 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:49:56,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:49:56,781 INFO L82 PathProgramCache]: Analyzing trace with hash -631286832, now seen corresponding path program 59 times [2020-10-14 17:49:56,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:49:56,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043776680] [2020-10-14 17:49:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:49:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:49:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:56,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:49:59,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:49:59,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 17:49:59,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:49:59,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2527 [2020-10-14 17:49:59,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:49:59,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:49:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-14 17:49:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:49:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 17:49:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:01,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:01,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:01,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:01,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:01,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:50:01,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043776680] [2020-10-14 17:50:01,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:01,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-14 17:50:01,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645946930] [2020-10-14 17:50:01,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-14 17:50:01,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:01,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-14 17:50:01,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 17:50:01,286 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 63 states. [2020-10-14 17:50:01,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:01,774 INFO L93 Difference]: Finished difference Result 153 states and 156 transitions. [2020-10-14 17:50:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-14 17:50:01,775 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 133 [2020-10-14 17:50:01,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:01,777 INFO L225 Difference]: With dead ends: 153 [2020-10-14 17:50:01,777 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 17:50:01,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 17:50:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 17:50:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-10-14 17:50:01,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 17:50:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2020-10-14 17:50:01,781 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 133 [2020-10-14 17:50:01,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:01,782 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2020-10-14 17:50:01,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-14 17:50:01,782 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2020-10-14 17:50:01,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 17:50:01,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:01,783 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:01,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 17:50:01,783 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:01,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:01,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1046304978, now seen corresponding path program 60 times [2020-10-14 17:50:01,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:01,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338661205] [2020-10-14 17:50:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:01,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:01,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:04,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:04,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 17:50:04,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:04,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2947 [2020-10-14 17:50:04,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:04,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:04,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-14 17:50:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:04,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 17:50:04,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:06,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:06,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:06,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:06,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:06,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:06,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:06,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:06,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:50:06,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338661205] [2020-10-14 17:50:06,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:06,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-14 17:50:06,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282904320] [2020-10-14 17:50:06,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-14 17:50:06,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:06,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-14 17:50:06,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 17:50:06,806 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 64 states. [2020-10-14 17:50:07,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:07,294 INFO L93 Difference]: Finished difference Result 155 states and 158 transitions. [2020-10-14 17:50:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-14 17:50:07,294 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 135 [2020-10-14 17:50:07,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:07,296 INFO L225 Difference]: With dead ends: 155 [2020-10-14 17:50:07,296 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 17:50:07,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 17:50:07,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 17:50:07,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2020-10-14 17:50:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 17:50:07,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2020-10-14 17:50:07,300 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 135 [2020-10-14 17:50:07,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:07,300 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2020-10-14 17:50:07,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-14 17:50:07,301 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2020-10-14 17:50:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 17:50:07,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:07,301 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:07,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 17:50:07,301 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:07,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:07,302 INFO L82 PathProgramCache]: Analyzing trace with hash -446784756, now seen corresponding path program 61 times [2020-10-14 17:50:07,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:07,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463044826] [2020-10-14 17:50:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:07,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:07,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:10,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:10,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 17:50:10,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2695 [2020-10-14 17:50:10,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:10,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:10,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-14 17:50:10,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:10,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 17:50:10,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:12,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:12,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:12,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:12,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:12,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:12,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:50:12,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463044826] [2020-10-14 17:50:12,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:12,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-14 17:50:12,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12391307] [2020-10-14 17:50:12,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-14 17:50:12,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:12,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-14 17:50:12,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 17:50:12,160 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 65 states. [2020-10-14 17:50:12,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:12,680 INFO L93 Difference]: Finished difference Result 157 states and 160 transitions. [2020-10-14 17:50:12,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-14 17:50:12,681 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 137 [2020-10-14 17:50:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:12,682 INFO L225 Difference]: With dead ends: 157 [2020-10-14 17:50:12,682 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 17:50:12,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 17:50:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 17:50:12,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2020-10-14 17:50:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 17:50:12,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2020-10-14 17:50:12,687 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 137 [2020-10-14 17:50:12,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:12,687 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2020-10-14 17:50:12,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-14 17:50:12,687 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2020-10-14 17:50:12,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 17:50:12,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:12,688 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:12,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 17:50:12,689 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:12,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:12,689 INFO L82 PathProgramCache]: Analyzing trace with hash 166530922, now seen corresponding path program 62 times [2020-10-14 17:50:12,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:12,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657721527] [2020-10-14 17:50:12,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:12,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:15,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:15,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 17:50:15,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2737 [2020-10-14 17:50:15,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:15,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-14 17:50:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:15,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 17:50:15,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:17,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:17,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:17,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:17,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:17,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:17,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:50:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:50:17,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657721527] [2020-10-14 17:50:17,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:17,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-14 17:50:17,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629342004] [2020-10-14 17:50:17,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-14 17:50:17,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:17,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-14 17:50:17,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 17:50:17,653 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 66 states. [2020-10-14 17:50:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:18,165 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2020-10-14 17:50:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-14 17:50:18,166 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 139 [2020-10-14 17:50:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:18,167 INFO L225 Difference]: With dead ends: 159 [2020-10-14 17:50:18,168 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 17:50:18,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 17:50:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 17:50:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2020-10-14 17:50:18,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 17:50:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2020-10-14 17:50:18,172 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 139 [2020-10-14 17:50:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:18,172 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2020-10-14 17:50:18,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-14 17:50:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2020-10-14 17:50:18,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 17:50:18,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:18,174 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:18,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 17:50:18,174 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:18,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:18,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1152377928, now seen corresponding path program 63 times [2020-10-14 17:50:18,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:18,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092660363] [2020-10-14 17:50:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:18,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:20,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:20,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 17:50:20,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:20,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2813 [2020-10-14 17:50:20,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:20,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 65 [2020-10-14 17:50:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 17:50:20,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:23,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:23,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:23,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:23,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:23,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:23,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:50:23,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092660363] [2020-10-14 17:50:23,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:23,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-10-14 17:50:23,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889060053] [2020-10-14 17:50:23,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-14 17:50:23,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:23,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-14 17:50:23,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 17:50:23,305 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 67 states. [2020-10-14 17:50:23,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:23,829 INFO L93 Difference]: Finished difference Result 161 states and 164 transitions. [2020-10-14 17:50:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-14 17:50:23,830 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 141 [2020-10-14 17:50:23,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:23,831 INFO L225 Difference]: With dead ends: 161 [2020-10-14 17:50:23,832 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 17:50:23,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 17:50:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 17:50:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2020-10-14 17:50:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 17:50:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2020-10-14 17:50:23,836 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 141 [2020-10-14 17:50:23,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:23,836 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2020-10-14 17:50:23,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-14 17:50:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2020-10-14 17:50:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 17:50:23,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:23,838 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:23,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 17:50:23,838 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:23,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:23,838 INFO L82 PathProgramCache]: Analyzing trace with hash -636421722, now seen corresponding path program 64 times [2020-10-14 17:50:23,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:23,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488096503] [2020-10-14 17:50:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:23,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:26,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:26,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 17:50:26,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:26,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2968 [2020-10-14 17:50:26,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:26,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-14 17:50:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 17:50:26,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:29,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:29,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:29,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:29,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:29,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:29,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:29,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:50:29,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488096503] [2020-10-14 17:50:29,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:29,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-14 17:50:29,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937470931] [2020-10-14 17:50:29,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-14 17:50:29,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:29,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-14 17:50:29,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 17:50:29,154 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 68 states. [2020-10-14 17:50:29,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:29,473 INFO L93 Difference]: Finished difference Result 163 states and 166 transitions. [2020-10-14 17:50:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-14 17:50:29,474 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 143 [2020-10-14 17:50:29,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:29,475 INFO L225 Difference]: With dead ends: 163 [2020-10-14 17:50:29,475 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 17:50:29,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 17:50:29,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 17:50:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-10-14 17:50:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 17:50:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2020-10-14 17:50:29,480 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 143 [2020-10-14 17:50:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:29,480 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2020-10-14 17:50:29,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-14 17:50:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2020-10-14 17:50:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 17:50:29,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:29,481 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:29,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 17:50:29,482 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:29,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1685966972, now seen corresponding path program 65 times [2020-10-14 17:50:29,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:29,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997721699] [2020-10-14 17:50:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:32,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:32,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 17:50:32,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:32,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3049 [2020-10-14 17:50:32,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:32,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:32,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-14 17:50:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 17:50:32,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:34,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:34,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:34,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:34,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:34,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:34,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:34,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 4225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:50:35,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997721699] [2020-10-14 17:50:35,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:35,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-14 17:50:35,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981735426] [2020-10-14 17:50:35,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-14 17:50:35,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:35,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-14 17:50:35,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 17:50:35,006 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 69 states. [2020-10-14 17:50:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:35,438 INFO L93 Difference]: Finished difference Result 165 states and 168 transitions. [2020-10-14 17:50:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-14 17:50:35,438 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 145 [2020-10-14 17:50:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:35,440 INFO L225 Difference]: With dead ends: 165 [2020-10-14 17:50:35,440 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 17:50:35,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 17:50:35,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 17:50:35,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2020-10-14 17:50:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 17:50:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2020-10-14 17:50:35,443 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 145 [2020-10-14 17:50:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:35,443 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2020-10-14 17:50:35,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-14 17:50:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2020-10-14 17:50:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 17:50:35,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:35,444 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:35,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 17:50:35,445 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:35,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:35,445 INFO L82 PathProgramCache]: Analyzing trace with hash -981637662, now seen corresponding path program 66 times [2020-10-14 17:50:35,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:35,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907725047] [2020-10-14 17:50:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:38,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:38,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 17:50:38,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:38,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3242 [2020-10-14 17:50:38,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:38,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-14 17:50:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 17:50:38,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:41,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:41,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:41,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:41,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:41,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:41,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:41,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:50:41,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907725047] [2020-10-14 17:50:41,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:41,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-14 17:50:41,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155937727] [2020-10-14 17:50:41,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-14 17:50:41,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:41,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-14 17:50:41,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 17:50:41,209 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 70 states. [2020-10-14 17:50:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:41,753 INFO L93 Difference]: Finished difference Result 167 states and 170 transitions. [2020-10-14 17:50:41,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-14 17:50:41,754 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 147 [2020-10-14 17:50:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:41,755 INFO L225 Difference]: With dead ends: 167 [2020-10-14 17:50:41,755 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 17:50:41,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 17:50:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 17:50:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2020-10-14 17:50:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 17:50:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2020-10-14 17:50:41,760 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 147 [2020-10-14 17:50:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:41,761 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2020-10-14 17:50:41,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-14 17:50:41,761 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2020-10-14 17:50:41,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 17:50:41,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:41,762 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:41,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 17:50:41,762 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:41,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1568963776, now seen corresponding path program 67 times [2020-10-14 17:50:41,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:41,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119153874] [2020-10-14 17:50:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:41,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:45,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:45,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 17:50:45,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3246 [2020-10-14 17:50:45,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:45,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 69 [2020-10-14 17:50:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 17:50:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:47,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:47,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:47,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:47,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:50:47,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:47,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:47,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:50:47,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119153874] [2020-10-14 17:50:47,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:47,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-10-14 17:50:47,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240312981] [2020-10-14 17:50:47,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-10-14 17:50:47,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:47,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-10-14 17:50:47,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 17:50:47,639 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 71 states. [2020-10-14 17:50:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:48,212 INFO L93 Difference]: Finished difference Result 169 states and 172 transitions. [2020-10-14 17:50:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-14 17:50:48,212 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 149 [2020-10-14 17:50:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:48,214 INFO L225 Difference]: With dead ends: 169 [2020-10-14 17:50:48,214 INFO L226 Difference]: Without dead ends: 158 [2020-10-14 17:50:48,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 17:50:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-14 17:50:48,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-10-14 17:50:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 17:50:48,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2020-10-14 17:50:48,218 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 149 [2020-10-14 17:50:48,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:48,218 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2020-10-14 17:50:48,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-10-14 17:50:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2020-10-14 17:50:48,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 17:50:48,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:48,220 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:48,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 17:50:48,220 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:48,220 INFO L82 PathProgramCache]: Analyzing trace with hash 270619678, now seen corresponding path program 68 times [2020-10-14 17:50:48,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:48,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740079736] [2020-10-14 17:50:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:51,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:51,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 17:50:51,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3289 [2020-10-14 17:50:51,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:51,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 70 [2020-10-14 17:50:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 17:50:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:54,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:50:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:54,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:54,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:54,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:50:54,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:50:54,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:50:54,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:54,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:54,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:50:54,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:50:54,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:50:54,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:50:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:50:54,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740079736] [2020-10-14 17:50:54,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:50:54,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-14 17:50:54,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12769560] [2020-10-14 17:50:54,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-14 17:50:54,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:50:54,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-14 17:50:54,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2020-10-14 17:50:54,229 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 72 states. [2020-10-14 17:50:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:50:54,629 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2020-10-14 17:50:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-14 17:50:54,629 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 151 [2020-10-14 17:50:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:50:54,631 INFO L225 Difference]: With dead ends: 171 [2020-10-14 17:50:54,631 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 17:50:54,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2020-10-14 17:50:54,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 17:50:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2020-10-14 17:50:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-14 17:50:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2020-10-14 17:50:54,635 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 151 [2020-10-14 17:50:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:50:54,636 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2020-10-14 17:50:54,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-14 17:50:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2020-10-14 17:50:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 17:50:54,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:50:54,637 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:50:54,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 17:50:54,637 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:50:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:50:54,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1897542660, now seen corresponding path program 69 times [2020-10-14 17:50:54,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:50:54,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362132276] [2020-10-14 17:50:54,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:50:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:50:54,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:54,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:50:58,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:50:58,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 17:50:58,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:50:58,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3520 [2020-10-14 17:50:58,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:50:58,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:50:58,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 71 [2020-10-14 17:50:58,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:50:58,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 17:50:58,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:00,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:00,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:00,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:00,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:00,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:00,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:00,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:00,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:00,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:00,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 4761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:51:00,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362132276] [2020-10-14 17:51:00,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:00,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-10-14 17:51:00,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949568363] [2020-10-14 17:51:00,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-14 17:51:00,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:00,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-14 17:51:00,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 17:51:00,965 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 73 states. [2020-10-14 17:51:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:01,547 INFO L93 Difference]: Finished difference Result 173 states and 176 transitions. [2020-10-14 17:51:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-14 17:51:01,547 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 153 [2020-10-14 17:51:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:01,549 INFO L225 Difference]: With dead ends: 173 [2020-10-14 17:51:01,549 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 17:51:01,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 17:51:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 17:51:01,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-14 17:51:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 17:51:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2020-10-14 17:51:01,553 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 153 [2020-10-14 17:51:01,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:01,554 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2020-10-14 17:51:01,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-10-14 17:51:01,554 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2020-10-14 17:51:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 17:51:01,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:01,555 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:01,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 17:51:01,555 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:01,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1852556378, now seen corresponding path program 70 times [2020-10-14 17:51:01,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:01,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693186170] [2020-10-14 17:51:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:01,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:05,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:05,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 17:51:05,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:51:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3817 [2020-10-14 17:51:05,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:05,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 72 [2020-10-14 17:51:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 17:51:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:08,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:08,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:08,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:08,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:08,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:08,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:08,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:08,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:51:08,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693186170] [2020-10-14 17:51:08,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:08,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-14 17:51:08,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721549570] [2020-10-14 17:51:08,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-14 17:51:08,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:08,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-14 17:51:08,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 17:51:08,258 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 74 states. [2020-10-14 17:51:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:08,605 INFO L93 Difference]: Finished difference Result 175 states and 178 transitions. [2020-10-14 17:51:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-14 17:51:08,605 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 155 [2020-10-14 17:51:08,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:08,607 INFO L225 Difference]: With dead ends: 175 [2020-10-14 17:51:08,607 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 17:51:08,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 17:51:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 17:51:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2020-10-14 17:51:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 17:51:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2020-10-14 17:51:08,612 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 155 [2020-10-14 17:51:08,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:08,612 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2020-10-14 17:51:08,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-14 17:51:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2020-10-14 17:51:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 17:51:08,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:08,613 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:08,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 17:51:08,614 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:08,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2074796744, now seen corresponding path program 71 times [2020-10-14 17:51:08,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:08,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701591998] [2020-10-14 17:51:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:08,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:12,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:12,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 17:51:12,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:51:12,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3592 [2020-10-14 17:51:12,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:12,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-14 17:51:12,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:12,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 17:51:12,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:15,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:15,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:15,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:15,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:51:15,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701591998] [2020-10-14 17:51:15,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:15,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-10-14 17:51:15,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132374228] [2020-10-14 17:51:15,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-10-14 17:51:15,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:15,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-10-14 17:51:15,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 17:51:15,182 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 75 states. [2020-10-14 17:51:15,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:15,788 INFO L93 Difference]: Finished difference Result 177 states and 180 transitions. [2020-10-14 17:51:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-14 17:51:15,789 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 157 [2020-10-14 17:51:15,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:15,790 INFO L225 Difference]: With dead ends: 177 [2020-10-14 17:51:15,790 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 17:51:15,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 17:51:15,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 17:51:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2020-10-14 17:51:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 17:51:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2020-10-14 17:51:15,795 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 157 [2020-10-14 17:51:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:15,795 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2020-10-14 17:51:15,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-10-14 17:51:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2020-10-14 17:51:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 17:51:15,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:15,796 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:15,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 17:51:15,796 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:15,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:15,796 INFO L82 PathProgramCache]: Analyzing trace with hash -984893802, now seen corresponding path program 72 times [2020-10-14 17:51:15,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:15,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044717103] [2020-10-14 17:51:15,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:19,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 17:51:19,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:51:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3799 [2020-10-14 17:51:19,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:19,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-14 17:51:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 17:51:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:22,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:22,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:22,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:22,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:22,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:51:22,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:22,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:22,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:22,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:51:22,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044717103] [2020-10-14 17:51:22,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:22,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-14 17:51:22,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935833583] [2020-10-14 17:51:22,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-14 17:51:22,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:22,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-14 17:51:22,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2020-10-14 17:51:22,652 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 76 states. [2020-10-14 17:51:23,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:23,076 INFO L93 Difference]: Finished difference Result 179 states and 182 transitions. [2020-10-14 17:51:23,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-14 17:51:23,076 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 159 [2020-10-14 17:51:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:23,078 INFO L225 Difference]: With dead ends: 179 [2020-10-14 17:51:23,078 INFO L226 Difference]: Without dead ends: 168 [2020-10-14 17:51:23,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2020-10-14 17:51:23,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-14 17:51:23,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2020-10-14 17:51:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 17:51:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2020-10-14 17:51:23,083 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 159 [2020-10-14 17:51:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:23,083 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2020-10-14 17:51:23,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-14 17:51:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2020-10-14 17:51:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-14 17:51:23,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:23,084 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:23,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 17:51:23,085 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:23,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1560186764, now seen corresponding path program 73 times [2020-10-14 17:51:23,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:23,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777758484] [2020-10-14 17:51:23,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:27,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:27,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 17:51:27,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:51:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3977 [2020-10-14 17:51:27,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:27,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 75 [2020-10-14 17:51:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 17:51:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:30,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:30,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:30,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:30,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:30,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:30,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 5329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:51:30,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777758484] [2020-10-14 17:51:30,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:30,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-10-14 17:51:30,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173606646] [2020-10-14 17:51:30,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-10-14 17:51:30,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:30,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-10-14 17:51:30,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 17:51:30,255 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 77 states. [2020-10-14 17:51:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:30,885 INFO L93 Difference]: Finished difference Result 181 states and 184 transitions. [2020-10-14 17:51:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-14 17:51:30,886 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 161 [2020-10-14 17:51:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:30,887 INFO L225 Difference]: With dead ends: 181 [2020-10-14 17:51:30,887 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 17:51:30,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 17:51:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 17:51:30,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2020-10-14 17:51:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 17:51:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2020-10-14 17:51:30,892 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 161 [2020-10-14 17:51:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:30,893 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2020-10-14 17:51:30,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-10-14 17:51:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2020-10-14 17:51:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-14 17:51:30,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:30,894 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:30,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 17:51:30,894 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:30,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:30,894 INFO L82 PathProgramCache]: Analyzing trace with hash -365942062, now seen corresponding path program 74 times [2020-10-14 17:51:30,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:30,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627105527] [2020-10-14 17:51:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:30,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:35,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:35,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 17:51:35,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:51:35,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 17:51:35,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:35,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 76 [2020-10-14 17:51:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 17:51:35,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:39,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:39,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:39,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:39,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:39,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:39,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:39,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:51:39,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627105527] [2020-10-14 17:51:39,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:39,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-10-14 17:51:39,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276744627] [2020-10-14 17:51:39,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-14 17:51:39,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:39,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-14 17:51:39,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2020-10-14 17:51:39,197 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 78 states. [2020-10-14 17:51:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:39,878 INFO L93 Difference]: Finished difference Result 183 states and 186 transitions. [2020-10-14 17:51:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-14 17:51:39,879 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 163 [2020-10-14 17:51:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:39,881 INFO L225 Difference]: With dead ends: 183 [2020-10-14 17:51:39,881 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 17:51:39,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2020-10-14 17:51:39,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 17:51:39,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2020-10-14 17:51:39,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 17:51:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2020-10-14 17:51:39,886 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 163 [2020-10-14 17:51:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:39,887 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2020-10-14 17:51:39,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-14 17:51:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2020-10-14 17:51:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 17:51:39,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:39,888 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:39,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-14 17:51:39,888 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:39,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:39,888 INFO L82 PathProgramCache]: Analyzing trace with hash 546948528, now seen corresponding path program 75 times [2020-10-14 17:51:39,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:39,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064532990] [2020-10-14 17:51:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:44,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 17:51:44,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:51:44,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4577 [2020-10-14 17:51:44,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:44,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 77 [2020-10-14 17:51:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 17:51:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:47,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:51:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:47,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:47,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:47,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:51:47,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:51:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:51:47,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:47,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:51:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:51:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:51:47,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:51:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:51:47,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064532990] [2020-10-14 17:51:47,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:51:47,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-10-14 17:51:47,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957636749] [2020-10-14 17:51:47,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-10-14 17:51:47,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:51:47,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-10-14 17:51:47,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 17:51:47,868 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 79 states. [2020-10-14 17:51:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:51:48,334 INFO L93 Difference]: Finished difference Result 185 states and 188 transitions. [2020-10-14 17:51:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-14 17:51:48,335 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 165 [2020-10-14 17:51:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:51:48,337 INFO L225 Difference]: With dead ends: 185 [2020-10-14 17:51:48,337 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 17:51:48,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 17:51:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 17:51:48,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2020-10-14 17:51:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 17:51:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2020-10-14 17:51:48,342 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 165 [2020-10-14 17:51:48,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:51:48,342 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2020-10-14 17:51:48,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-10-14 17:51:48,342 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2020-10-14 17:51:48,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 17:51:48,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:51:48,343 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:51:48,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-14 17:51:48,344 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:51:48,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:51:48,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1661477134, now seen corresponding path program 76 times [2020-10-14 17:51:48,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:51:48,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710792270] [2020-10-14 17:51:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:51:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:51:48,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:51:52,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:51:52,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 17:51:52,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:51:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4448 [2020-10-14 17:51:52,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:51:52,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:51:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 78 [2020-10-14 17:51:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:51:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 17:51:52,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0