/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 04:26:06,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 04:26:06,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 04:26:06,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 04:26:06,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 04:26:06,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 04:26:06,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 04:26:06,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 04:26:06,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 04:26:06,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 04:26:06,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 04:26:06,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 04:26:06,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 04:26:06,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 04:26:06,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 04:26:06,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 04:26:06,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 04:26:06,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 04:26:06,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 04:26:06,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 04:26:06,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 04:26:06,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 04:26:06,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 04:26:06,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 04:26:06,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 04:26:06,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 04:26:06,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 04:26:06,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 04:26:06,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 04:26:06,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 04:26:06,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 04:26:06,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 04:26:06,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 04:26:06,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 04:26:06,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 04:26:06,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 04:26:06,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 04:26:06,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 04:26:06,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 04:26:06,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 04:26:06,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 04:26:06,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 04:26:06,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 04:26:06,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 04:26:06,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 04:26:06,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 04:26:06,923 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 04:26:06,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 04:26:06,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 04:26:06,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 04:26:06,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 04:26:06,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 04:26:06,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 04:26:06,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 04:26:06,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 04:26:06,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 04:26:06,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 04:26:06,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 04:26:06,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 04:26:06,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:26:06,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 04:26:06,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 04:26:06,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 04:26:06,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 04:26:06,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 04:26:06,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 04:26:06,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 04:26:06,928 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=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 04:26:07,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 04:26:07,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 04:26:07,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 04:26:07,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 04:26:07,262 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 04:26:07,263 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2020-10-13 04:26:07,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7ede2a64/5904e5963dcb4934ac807e8752c33792/FLAGe699cf16e [2020-10-13 04:26:07,791 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 04:26:07,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2020-10-13 04:26:07,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7ede2a64/5904e5963dcb4934ac807e8752c33792/FLAGe699cf16e [2020-10-13 04:26:08,192 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7ede2a64/5904e5963dcb4934ac807e8752c33792 [2020-10-13 04:26:08,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 04:26:08,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 04:26:08,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 04:26:08,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 04:26:08,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 04:26:08,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c286c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08, skipping insertion in model container [2020-10-13 04:26:08,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 04:26:08,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 04:26:08,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:26:08,455 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 04:26:08,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 04:26:08,501 INFO L208 MainTranslator]: Completed translation [2020-10-13 04:26:08,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08 WrapperNode [2020-10-13 04:26:08,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 04:26:08,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 04:26:08,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 04:26:08,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 04:26:08,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... [2020-10-13 04:26:08,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 04:26:08,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 04:26:08,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 04:26:08,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 04:26:08,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 04:26:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 04:26:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 04:26:08,682 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 04:26:08,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 04:26:08,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 04:26:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 04:26:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 04:26:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 04:26:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 04:26:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 04:26:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 04:26:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 04:26:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 04:26:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 04:26:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 04:26:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 04:26:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 04:26:09,044 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 04:26:09,044 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 04:26:09,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:26:09 BoogieIcfgContainer [2020-10-13 04:26:09,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 04:26:09,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 04:26:09,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 04:26:09,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 04:26:09,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:26:08" (1/3) ... [2020-10-13 04:26:09,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1871c3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:26:09, skipping insertion in model container [2020-10-13 04:26:09,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:26:08" (2/3) ... [2020-10-13 04:26:09,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1871c3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:26:09, skipping insertion in model container [2020-10-13 04:26:09,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:26:09" (3/3) ... [2020-10-13 04:26:09,058 INFO L109 eAbstractionObserver]: Analyzing ICFG array_min_and_copy_shift_sum_add.c [2020-10-13 04:26:09,069 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 04:26:09,076 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 04:26:09,090 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 04:26:09,113 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 04:26:09,114 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 04:26:09,114 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 04:26:09,114 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 04:26:09,114 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 04:26:09,114 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 04:26:09,115 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 04:26:09,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 04:26:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-13 04:26:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 04:26:09,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:09,144 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:09,144 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:09,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:09,151 INFO L82 PathProgramCache]: Analyzing trace with hash -374325002, now seen corresponding path program 1 times [2020-10-13 04:26:09,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:09,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724976989] [2020-10-13 04:26:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:09,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:09,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 04:26:09,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 04:26:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-13 04:26:09,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:09,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:09,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 04:26:09,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:09,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 04:26:09,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:09,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:09,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:09,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:09,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:09,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:09,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:09,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:09,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 04:26:09,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:09,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:09,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:09,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:09,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:09,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:09,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:26:09,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 04:26:09,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 04:26:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:09,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 04:26:09,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724976989] [2020-10-13 04:26:09,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:09,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-13 04:26:09,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583068288] [2020-10-13 04:26:09,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 04:26:09,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:09,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 04:26:09,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:26:09,800 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-13 04:26:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:09,935 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2020-10-13 04:26:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 04:26:09,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-13 04:26:09,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:09,946 INFO L225 Difference]: With dead ends: 69 [2020-10-13 04:26:09,947 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 04:26:09,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 04:26:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 04:26:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-13 04:26:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 04:26:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-13 04:26:09,992 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 27 [2020-10-13 04:26:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:09,993 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-13 04:26:09,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 04:26:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-13 04:26:09,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 04:26:09,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:09,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:09,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 04:26:09,997 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:09,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:09,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1644892538, now seen corresponding path program 1 times [2020-10-13 04:26:09,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:09,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196705849] [2020-10-13 04:26:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 04:26:10,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 04:26:10,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:26:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 04:26:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:10,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:26:10,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 04:26:10,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:10,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 04:26:10,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:10,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:10,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:10,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:10,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 04:26:10,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 04:26:10,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196705849] [2020-10-13 04:26:10,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:26:10,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 04:26:10,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980912675] [2020-10-13 04:26:10,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:26:10,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:10,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:26:10,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:26:10,321 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-10-13 04:26:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:10,521 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2020-10-13 04:26:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 04:26:10,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-13 04:26:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:10,523 INFO L225 Difference]: With dead ends: 37 [2020-10-13 04:26:10,524 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 04:26:10,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 04:26:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 04:26:10,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-13 04:26:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 04:26:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-13 04:26:10,534 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 27 [2020-10-13 04:26:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:10,536 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-13 04:26:10,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:26:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-13 04:26:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 04:26:10,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:10,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:10,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 04:26:10,538 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:10,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1157530424, now seen corresponding path program 1 times [2020-10-13 04:26:10,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:10,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063654527] [2020-10-13 04:26:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 04:26:10,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 04:26:10,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-13 04:26:10,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 04:26:10,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 04:26:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 04:26:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:10,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:10,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:10,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:10,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:10,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:10,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:10,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:10,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:10,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:10,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:10,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:10,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:10,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:10,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:10,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:10,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:10,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:10,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 04:26:10,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063654527] [2020-10-13 04:26:10,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 04:26:10,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 04:26:10,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762570263] [2020-10-13 04:26:10,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 04:26:10,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:10,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 04:26:10,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 04:26:10,825 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-13 04:26:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:10,992 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-10-13 04:26:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 04:26:10,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-13 04:26:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:10,995 INFO L225 Difference]: With dead ends: 56 [2020-10-13 04:26:10,995 INFO L226 Difference]: Without dead ends: 41 [2020-10-13 04:26:10,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 04:26:10,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-13 04:26:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2020-10-13 04:26:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-13 04:26:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-13 04:26:11,006 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2020-10-13 04:26:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:11,007 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-13 04:26:11,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 04:26:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-13 04:26:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 04:26:11,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:11,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:11,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 04:26:11,010 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:11,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:11,010 INFO L82 PathProgramCache]: Analyzing trace with hash -155742140, now seen corresponding path program 1 times [2020-10-13 04:26:11,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:11,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839743158] [2020-10-13 04:26:11,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:11,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:12,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:12,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:13,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:13,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:13,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:14,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:14,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 04:26:14,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 04:26:14,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3109 [2020-10-13 04:26:14,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:14,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 04:26:14,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:14,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 04:26:14,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:14,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:14,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:14,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:14,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:14,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:14,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:14,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:14,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:14,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:14,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:14,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:14,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:14,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:14,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:14,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:14,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:14,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:14,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:14,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:14,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:14,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:14,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:14,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:14,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:26:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:14,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:14,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:14,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:14,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:26:14,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:14,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 04:26:14,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839743158] [2020-10-13 04:26:14,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:14,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 04:26:14,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66260032] [2020-10-13 04:26:14,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 04:26:14,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:14,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 04:26:14,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-13 04:26:14,630 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 14 states. [2020-10-13 04:26:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:15,407 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-13 04:26:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 04:26:15,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-13 04:26:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:15,410 INFO L225 Difference]: With dead ends: 59 [2020-10-13 04:26:15,410 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:26:15,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2020-10-13 04:26:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:26:15,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2020-10-13 04:26:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 04:26:15,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2020-10-13 04:26:15,421 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 41 [2020-10-13 04:26:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:15,421 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2020-10-13 04:26:15,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 04:26:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2020-10-13 04:26:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 04:26:15,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:15,423 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:15,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 04:26:15,423 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:15,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1435605818, now seen corresponding path program 1 times [2020-10-13 04:26:15,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:15,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296981373] [2020-10-13 04:26:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:16,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:16,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:17,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:17,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:17,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:17,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 04:26:17,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 04:26:17,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2229 [2020-10-13 04:26:17,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 04:26:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 04:26:17,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:17,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:17,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:17,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:17,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:17,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:17,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:17,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:17,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:17,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:17,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:17,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:17,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:17,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:17,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:17,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:17,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:18,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 04:26:18,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:18,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:18,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:26:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:18,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:18,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:18,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:18,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:18,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 04:26:18,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:18,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 04:26:18,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296981373] [2020-10-13 04:26:18,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:18,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:26:18,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814950793] [2020-10-13 04:26:18,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:26:18,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:18,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:26:18,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:26:18,050 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 17 states. [2020-10-13 04:26:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:19,069 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2020-10-13 04:26:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 04:26:19,070 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-10-13 04:26:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:19,074 INFO L225 Difference]: With dead ends: 59 [2020-10-13 04:26:19,074 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 04:26:19,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2020-10-13 04:26:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 04:26:19,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-13 04:26:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 04:26:19,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-13 04:26:19,085 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 41 [2020-10-13 04:26:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:19,086 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-13 04:26:19,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:26:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-13 04:26:19,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 04:26:19,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:19,088 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:19,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 04:26:19,088 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:19,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:19,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1619425154, now seen corresponding path program 2 times [2020-10-13 04:26:19,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:19,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752423383] [2020-10-13 04:26:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:19,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:20,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:20,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:20,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 04:26:20,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 04:26:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1518 [2020-10-13 04:26:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:26:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 04:26:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 04:26:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:20,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:20,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:20,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:20,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:20,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:20,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:20,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:20,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:20,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:20,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:20,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:20,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:20,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:20,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:20,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:20,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:20,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:20,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:20,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:20,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:20,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:20,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:20,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:26:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:20,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:20,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:20,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:20,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:20,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:20,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:20,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 04:26:20,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752423383] [2020-10-13 04:26:20,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:20,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:26:20,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381984831] [2020-10-13 04:26:20,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:26:20,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:20,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:26:20,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:26:20,725 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 8 states. [2020-10-13 04:26:20,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:20,945 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-10-13 04:26:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 04:26:20,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-13 04:26:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:20,947 INFO L225 Difference]: With dead ends: 71 [2020-10-13 04:26:20,947 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 04:26:20,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:26:20,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 04:26:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2020-10-13 04:26:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 04:26:20,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-13 04:26:20,955 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 43 [2020-10-13 04:26:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:20,956 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-13 04:26:20,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:26:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-13 04:26:20,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 04:26:20,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:20,957 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:20,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 04:26:20,958 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:20,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:20,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1293146800, now seen corresponding path program 3 times [2020-10-13 04:26:20,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:20,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180748434] [2020-10-13 04:26:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:20,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:21,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:21,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:22,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:22,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:23,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:24,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:25,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:25,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:25,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:25,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 04:26:25,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 04:26:25,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 04:26:25,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:25,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 04:26:25,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 04:26:25,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 04:26:25,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:26,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:26,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:26,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:26,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:26,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:26,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:26,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:26,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:26,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:26,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:26,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:26,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:26,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:26,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:26,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:26,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:26,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:26,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:26,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:26,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:26,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:26,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:26:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:26,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:26,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:26,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:26,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:26,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:26,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:26,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:26,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:26:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:26,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:26,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:26,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:26,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:26,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:26,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-13 04:26:26,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180748434] [2020-10-13 04:26:26,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:26,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 04:26:26,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281666199] [2020-10-13 04:26:26,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 04:26:26,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:26,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 04:26:26,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 04:26:26,141 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 8 states. [2020-10-13 04:26:26,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:26,414 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-10-13 04:26:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 04:26:26,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-13 04:26:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:26,415 INFO L225 Difference]: With dead ends: 49 [2020-10-13 04:26:26,416 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 04:26:26,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:26:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 04:26:26,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 04:26:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 04:26:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 04:26:26,430 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 53 [2020-10-13 04:26:26,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:26,431 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 04:26:26,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 04:26:26,433 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 04:26:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 04:26:26,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:26,435 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:26,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 04:26:26,435 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:26,436 INFO L82 PathProgramCache]: Analyzing trace with hash -504759922, now seen corresponding path program 4 times [2020-10-13 04:26:26,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:26,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932793475] [2020-10-13 04:26:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:28,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:28,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:29,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:31,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:31,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:31,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:31,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 04:26:31,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 04:26:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 04:26:31,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:31,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 04:26:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:31,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 04:26:31,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:26:32,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:32,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:32,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:32,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:32,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:32,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:32,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:32,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:32,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:32,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:32,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:32,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:32,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:32,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:32,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:32,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:32,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:32,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:32,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:26:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:32,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:32,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:32,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:32,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:26:33,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:33,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:33,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:33,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:26:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:33,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:33,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:33,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 04:26:33,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:33,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 04:26:33,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932793475] [2020-10-13 04:26:33,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:33,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 04:26:33,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246060790] [2020-10-13 04:26:33,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 04:26:33,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:33,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 04:26:33,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:26:33,042 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 23 states. [2020-10-13 04:26:34,252 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2020-10-13 04:26:34,710 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 49 [2020-10-13 04:26:35,005 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 63 [2020-10-13 04:26:35,231 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2020-10-13 04:26:35,453 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 53 [2020-10-13 04:26:35,748 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2020-10-13 04:26:35,926 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2020-10-13 04:26:36,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:36,198 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2020-10-13 04:26:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 04:26:36,199 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 55 [2020-10-13 04:26:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:36,201 INFO L225 Difference]: With dead ends: 75 [2020-10-13 04:26:36,202 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 04:26:36,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=239, Invalid=1567, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 04:26:36,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 04:26:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2020-10-13 04:26:36,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:26:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2020-10-13 04:26:36,215 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 55 [2020-10-13 04:26:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:36,216 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2020-10-13 04:26:36,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 04:26:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2020-10-13 04:26:36,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 04:26:36,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:36,217 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:36,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 04:26:36,217 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:36,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:36,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2101263632, now seen corresponding path program 1 times [2020-10-13 04:26:36,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:36,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224235796] [2020-10-13 04:26:36,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:37,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:37,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:39,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:39,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:39,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:39,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:40,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:40,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:40,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:40,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 04:26:40,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 04:26:40,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4653 [2020-10-13 04:26:40,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 04:26:40,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:40,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 04:26:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:42,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:42,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:42,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:42,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:42,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:42,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:42,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:42,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:42,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:42,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:42,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:42,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:42,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:42,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:26:42,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:42,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:42,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:26:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:42,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:42,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:42,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:42,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:42,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:42,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:42,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:42,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:26:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:42,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:42,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:42,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:42,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:42,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:42,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:42,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 04:26:42,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224235796] [2020-10-13 04:26:42,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:42,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 04:26:42,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032517382] [2020-10-13 04:26:42,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 04:26:42,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:42,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 04:26:42,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:26:42,250 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand 23 states. [2020-10-13 04:26:43,663 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-10-13 04:26:43,919 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-13 04:26:44,241 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-13 04:26:44,402 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-13 04:26:44,642 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-10-13 04:26:44,951 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-13 04:26:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:45,224 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2020-10-13 04:26:45,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 04:26:45,225 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 55 [2020-10-13 04:26:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:45,226 INFO L225 Difference]: With dead ends: 86 [2020-10-13 04:26:45,226 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 04:26:45,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=332, Invalid=1924, Unknown=0, NotChecked=0, Total=2256 [2020-10-13 04:26:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 04:26:45,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 61. [2020-10-13 04:26:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 04:26:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2020-10-13 04:26:45,239 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 55 [2020-10-13 04:26:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:45,239 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2020-10-13 04:26:45,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 04:26:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2020-10-13 04:26:45,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 04:26:45,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:45,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:45,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 04:26:45,241 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:45,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:45,242 INFO L82 PathProgramCache]: Analyzing trace with hash 881443472, now seen corresponding path program 2 times [2020-10-13 04:26:45,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:45,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907390844] [2020-10-13 04:26:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:45,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:46,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:46,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:47,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:47,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:48,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:49,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:49,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:49,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 04:26:49,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 04:26:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3961 [2020-10-13 04:26:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 04:26:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 04:26:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:50,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:50,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:50,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:50,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:50,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:50,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:50,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:50,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:50,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:50,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:50,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:50,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:50,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:50,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:50,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:50,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:50,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:50,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:50,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:50,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:50,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:50,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:50,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:26:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:50,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:50,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:50,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:50,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:50,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:50,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:26:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:50,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:50,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:50,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:50,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:50,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 04:26:50,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907390844] [2020-10-13 04:26:50,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:50,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 04:26:50,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172358080] [2020-10-13 04:26:50,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 04:26:50,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:50,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 04:26:50,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:26:50,517 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand 23 states. [2020-10-13 04:26:52,241 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2020-10-13 04:26:52,482 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-13 04:26:52,752 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-10-13 04:26:53,078 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-13 04:26:53,391 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-13 04:26:53,571 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-13 04:26:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:26:54,263 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2020-10-13 04:26:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 04:26:54,264 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 55 [2020-10-13 04:26:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:26:54,266 INFO L225 Difference]: With dead ends: 117 [2020-10-13 04:26:54,266 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 04:26:54,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=340, Invalid=2416, Unknown=0, NotChecked=0, Total=2756 [2020-10-13 04:26:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 04:26:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 65. [2020-10-13 04:26:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 04:26:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2020-10-13 04:26:54,281 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 55 [2020-10-13 04:26:54,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:26:54,281 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2020-10-13 04:26:54,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 04:26:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2020-10-13 04:26:54,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 04:26:54,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:26:54,282 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:26:54,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 04:26:54,283 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:26:54,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:26:54,283 INFO L82 PathProgramCache]: Analyzing trace with hash -807500270, now seen corresponding path program 2 times [2020-10-13 04:26:54,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:26:54,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417054107] [2020-10-13 04:26:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:26:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:54,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:54,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:54,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:55,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:56,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:56,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:57,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:57,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:57,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 04:26:57,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 04:26:57,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3124 [2020-10-13 04:26:57,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:57,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 04:26:57,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:26:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 04:26:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:26:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:26:58,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:58,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:26:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:58,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:26:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:26:58,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:26:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:26:58,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:58,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:26:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:58,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:26:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:26:58,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:26:58,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:26:58,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:26:58,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:26:58,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:26:58,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:26:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:26:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:26:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:26:58,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:26:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 04:26:58,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417054107] [2020-10-13 04:26:58,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:26:58,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 04:26:58,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422695278] [2020-10-13 04:26:58,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 04:26:58,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:26:58,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 04:26:58,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-13 04:26:58,660 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand 23 states. [2020-10-13 04:27:01,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:01,432 INFO L93 Difference]: Finished difference Result 98 states and 122 transitions. [2020-10-13 04:27:01,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 04:27:01,433 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 55 [2020-10-13 04:27:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:01,434 INFO L225 Difference]: With dead ends: 98 [2020-10-13 04:27:01,435 INFO L226 Difference]: Without dead ends: 93 [2020-10-13 04:27:01,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=264, Invalid=2088, Unknown=0, NotChecked=0, Total=2352 [2020-10-13 04:27:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-13 04:27:01,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 59. [2020-10-13 04:27:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 04:27:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2020-10-13 04:27:01,447 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 55 [2020-10-13 04:27:01,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:01,448 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2020-10-13 04:27:01,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 04:27:01,448 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2020-10-13 04:27:01,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 04:27:01,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:01,449 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:01,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 04:27:01,450 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:01,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:01,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1220785740, now seen corresponding path program 5 times [2020-10-13 04:27:01,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:01,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469286037] [2020-10-13 04:27:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:01,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:02,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:03,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:04,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:04,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 04:27:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 04:27:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3289 [2020-10-13 04:27:04,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:27:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 04:27:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 04:27:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 04:27:04,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:04,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:04,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:04,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:04,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:04,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:04,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:04,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:04,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:04,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:04,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:04,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:04,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:04,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:27:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:04,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:04,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:04,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:04,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:04,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:04,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:04,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:27:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:04,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:04,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:04,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:04,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:04,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:04,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:27:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:04,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:04,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:04,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:04,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:04,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:04,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:04,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-13 04:27:04,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469286037] [2020-10-13 04:27:04,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:04,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:27:04,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684562103] [2020-10-13 04:27:04,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:27:04,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:04,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:27:04,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:27:04,869 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 10 states. [2020-10-13 04:27:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:05,147 INFO L93 Difference]: Finished difference Result 95 states and 116 transitions. [2020-10-13 04:27:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 04:27:05,147 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 04:27:05,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:05,149 INFO L225 Difference]: With dead ends: 95 [2020-10-13 04:27:05,149 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 04:27:05,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-13 04:27:05,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 04:27:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2020-10-13 04:27:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-13 04:27:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2020-10-13 04:27:05,158 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 57 [2020-10-13 04:27:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:05,158 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2020-10-13 04:27:05,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:27:05,158 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2020-10-13 04:27:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 04:27:05,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:05,159 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:05,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 04:27:05,159 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:05,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1724329444, now seen corresponding path program 6 times [2020-10-13 04:27:05,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:05,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985379976] [2020-10-13 04:27:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:05,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:06,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:06,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:06,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:07,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:07,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:07,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:08,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:08,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:09,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:10,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:10,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 04:27:10,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-13 04:27:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:27:10,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 04:27:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:27:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 04:27:10,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:10,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:10,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:10,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:10,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:10,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:10,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:10,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:10,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:10,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:10,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:10,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:10,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:10,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:10,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:10,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:10,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:27:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:10,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:10,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:10,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:10,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:10,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:10,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:10,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:27:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:10,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:10,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:10,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:10,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:10,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:10,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:10,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:27:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:10,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:10,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:10,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:10,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:10,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:10,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:10,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:27:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:10,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:10,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:10,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:10,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:10,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:10,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:10,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:10,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:10,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:10,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 04:27:10,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985379976] [2020-10-13 04:27:10,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:10,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 04:27:10,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312327538] [2020-10-13 04:27:10,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 04:27:10,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:10,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 04:27:10,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-13 04:27:10,663 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand 17 states. [2020-10-13 04:27:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:11,476 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2020-10-13 04:27:11,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 04:27:11,477 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-10-13 04:27:11,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:11,478 INFO L225 Difference]: With dead ends: 106 [2020-10-13 04:27:11,478 INFO L226 Difference]: Without dead ends: 95 [2020-10-13 04:27:11,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2020-10-13 04:27:11,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-13 04:27:11,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2020-10-13 04:27:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 04:27:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2020-10-13 04:27:11,491 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 65 [2020-10-13 04:27:11,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:11,492 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2020-10-13 04:27:11,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 04:27:11,492 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2020-10-13 04:27:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 04:27:11,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:11,493 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:11,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 04:27:11,494 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:11,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:11,494 INFO L82 PathProgramCache]: Analyzing trace with hash 881694110, now seen corresponding path program 3 times [2020-10-13 04:27:11,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:11,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081882854] [2020-10-13 04:27:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:11,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:11,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:11,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:11,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:11,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:12,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:12,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:12,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:12,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:15,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:15,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:15,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:16,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 04:27:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-13 04:27:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:27:16,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 04:27:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:27:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 04:27:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:16,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:16,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:16,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:16,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:16,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:16,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:16,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:16,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:16,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:16,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:16,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:16,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:16,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:16,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:27:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:16,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:16,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:16,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:16,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:27:16,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:16,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:27:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:16,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:16,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:16,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:16,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:16,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:16,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:27:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:16,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:16,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:16,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:16,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:16,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:16,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:16,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:27:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:16,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:16,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:16,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:16,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:16,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 04:27:16,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081882854] [2020-10-13 04:27:16,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:16,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 04:27:16,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559352944] [2020-10-13 04:27:16,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 04:27:16,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:16,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 04:27:16,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 04:27:16,615 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand 10 states. [2020-10-13 04:27:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:16,982 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2020-10-13 04:27:16,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:27:16,983 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-13 04:27:16,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:16,984 INFO L225 Difference]: With dead ends: 95 [2020-10-13 04:27:16,984 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 04:27:16,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:27:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 04:27:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2020-10-13 04:27:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 04:27:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-13 04:27:16,996 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 65 [2020-10-13 04:27:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:16,997 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-13 04:27:16,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 04:27:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-13 04:27:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 04:27:16,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:16,998 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:16,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 04:27:16,998 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:16,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1556877992, now seen corresponding path program 7 times [2020-10-13 04:27:16,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:16,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770793053] [2020-10-13 04:27:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:17,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:17,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:18,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:19,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:19,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:20,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:20,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:21,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:21,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:22,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:22,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 04:27:22,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 04:27:22,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:27:22,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 04:27:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 04:27:22,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:23,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:23,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:23,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:23,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:23,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:23,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:23,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:23,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:23,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:27:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:23,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:23,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:23,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:23,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:23,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:23,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:23,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:23,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:23,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:27:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:23,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:23,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:23,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:23,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:23,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:23,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:23,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:23,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:27:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:23,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:23,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:23,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:23,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:23,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:23,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:23,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:23,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:27:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:23,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:23,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:23,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:23,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:23,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:23,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:23,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:23,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:23,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:23,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:27:23,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770793053] [2020-10-13 04:27:23,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:23,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 04:27:23,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66824032] [2020-10-13 04:27:23,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 04:27:23,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:23,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 04:27:23,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:27:23,755 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 31 states. [2020-10-13 04:27:25,888 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-13 04:27:27,039 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-13 04:27:27,724 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-10-13 04:27:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:29,054 INFO L93 Difference]: Finished difference Result 125 states and 155 transitions. [2020-10-13 04:27:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-13 04:27:29,054 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 69 [2020-10-13 04:27:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:29,056 INFO L225 Difference]: With dead ends: 125 [2020-10-13 04:27:29,056 INFO L226 Difference]: Without dead ends: 120 [2020-10-13 04:27:29,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=508, Invalid=4604, Unknown=0, NotChecked=0, Total=5112 [2020-10-13 04:27:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-13 04:27:29,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 89. [2020-10-13 04:27:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 04:27:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-10-13 04:27:29,076 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 69 [2020-10-13 04:27:29,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:29,076 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-10-13 04:27:29,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 04:27:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-10-13 04:27:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 04:27:29,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:29,077 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:29,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 04:27:29,077 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:29,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:29,078 INFO L82 PathProgramCache]: Analyzing trace with hash 932650970, now seen corresponding path program 4 times [2020-10-13 04:27:29,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:29,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800012879] [2020-10-13 04:27:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:29,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:29,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:30,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:30,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:31,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:32,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:32,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:33,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:34,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:34,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 04:27:34,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 04:27:34,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:27:34,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 04:27:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:34,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 04:27:34,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:35,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:35,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:35,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:35,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:35,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:35,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:35,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:35,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:35,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:35,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:35,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:35,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:35,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:27:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:35,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:35,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:35,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:35,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:35,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:35,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:27:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:35,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:35,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:35,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:35,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:35,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:35,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:35,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:35,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:27:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:35,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:35,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:35,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:35,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:35,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:35,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:35,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:27:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:35,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:35,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:27:35,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800012879] [2020-10-13 04:27:35,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:35,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 04:27:35,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430361861] [2020-10-13 04:27:35,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 04:27:35,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:35,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 04:27:35,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2020-10-13 04:27:35,879 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 28 states. [2020-10-13 04:27:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:38,413 INFO L93 Difference]: Finished difference Result 126 states and 160 transitions. [2020-10-13 04:27:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 04:27:38,414 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 69 [2020-10-13 04:27:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:38,416 INFO L225 Difference]: With dead ends: 126 [2020-10-13 04:27:38,416 INFO L226 Difference]: Without dead ends: 121 [2020-10-13 04:27:38,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=247, Invalid=1733, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 04:27:38,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-13 04:27:38,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 93. [2020-10-13 04:27:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 04:27:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 121 transitions. [2020-10-13 04:27:38,431 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 121 transitions. Word has length 69 [2020-10-13 04:27:38,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:38,431 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 121 transitions. [2020-10-13 04:27:38,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 04:27:38,431 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 121 transitions. [2020-10-13 04:27:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 04:27:38,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:38,432 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:38,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 04:27:38,433 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:38,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:38,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1629264550, now seen corresponding path program 5 times [2020-10-13 04:27:38,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:38,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772067340] [2020-10-13 04:27:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:39,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:39,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:40,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:40,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:42,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:42,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:43,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:43,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:43,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 04:27:43,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 04:27:43,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:27:43,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 04:27:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 04:27:43,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:45,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:45,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:45,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:45,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:45,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:45,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:45,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:45,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:45,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:45,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:27:45,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:45,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:45,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:45,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:45,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:27:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:45,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:45,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:45,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:45,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:45,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:45,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:45,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:27:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:45,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:45,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:45,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:45,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:45,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:45,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:27:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:45,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:45,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:45,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:27:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:45,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:45,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:45,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:45,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:27:45,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772067340] [2020-10-13 04:27:45,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:45,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 04:27:45,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621334549] [2020-10-13 04:27:45,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 04:27:45,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:45,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 04:27:45,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2020-10-13 04:27:45,712 INFO L87 Difference]: Start difference. First operand 93 states and 121 transitions. Second operand 29 states. [2020-10-13 04:27:48,071 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-13 04:27:48,903 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-13 04:27:50,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:27:50,108 INFO L93 Difference]: Finished difference Result 128 states and 158 transitions. [2020-10-13 04:27:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 04:27:50,108 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 69 [2020-10-13 04:27:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:27:50,110 INFO L225 Difference]: With dead ends: 128 [2020-10-13 04:27:50,110 INFO L226 Difference]: Without dead ends: 123 [2020-10-13 04:27:50,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=466, Invalid=3194, Unknown=0, NotChecked=0, Total=3660 [2020-10-13 04:27:50,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-13 04:27:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2020-10-13 04:27:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:27:50,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 130 transitions. [2020-10-13 04:27:50,134 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 130 transitions. Word has length 69 [2020-10-13 04:27:50,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:27:50,135 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 130 transitions. [2020-10-13 04:27:50,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 04:27:50,135 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 130 transitions. [2020-10-13 04:27:50,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 04:27:50,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:27:50,136 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:27:50,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 04:27:50,136 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:27:50,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:27:50,137 INFO L82 PathProgramCache]: Analyzing trace with hash 860264412, now seen corresponding path program 6 times [2020-10-13 04:27:50,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:27:50,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13784118] [2020-10-13 04:27:50,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:27:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:51,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:53,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:53,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:55,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:55,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 04:27:55,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 04:27:55,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:27:55,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 04:27:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:27:55,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 04:27:55,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:57,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:27:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:57,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:57,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:57,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:27:57,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:57,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:27:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:57,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:57,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:57,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:57,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:57,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:27:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:27:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:57,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:27:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:57,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:57,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:57,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:57,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:57,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:57,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:27:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:57,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:57,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:57,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:27:57,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:57,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:27:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:57,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:57,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:57,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:57,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:27:57,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:57,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:57,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:57,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:57,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:27:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:27:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:27:57,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:27:57,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:27:57,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:27:57,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:27:57,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:27:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:27:57,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:27:57,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:27:57,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:27:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:27:57,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13784118] [2020-10-13 04:27:57,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:27:57,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 04:27:57,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960929125] [2020-10-13 04:27:57,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 04:27:57,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:27:57,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 04:27:57,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:27:57,061 INFO L87 Difference]: Start difference. First operand 101 states and 130 transitions. Second operand 31 states. [2020-10-13 04:27:58,958 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-13 04:27:59,508 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-13 04:27:59,749 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-13 04:28:00,503 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-13 04:28:01,511 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-13 04:28:02,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:02,329 INFO L93 Difference]: Finished difference Result 129 states and 160 transitions. [2020-10-13 04:28:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 04:28:02,330 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 69 [2020-10-13 04:28:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:02,331 INFO L225 Difference]: With dead ends: 129 [2020-10-13 04:28:02,331 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 04:28:02,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=474, Invalid=3816, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 04:28:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 04:28:02,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2020-10-13 04:28:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 04:28:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 130 transitions. [2020-10-13 04:28:02,350 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 130 transitions. Word has length 69 [2020-10-13 04:28:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:02,350 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 130 transitions. [2020-10-13 04:28:02,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 04:28:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 130 transitions. [2020-10-13 04:28:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 04:28:02,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:02,351 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:02,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 04:28:02,351 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:02,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1840696026, now seen corresponding path program 7 times [2020-10-13 04:28:02,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:02,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429451578] [2020-10-13 04:28:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:02,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:03,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:03,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:04,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:04,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:05,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:06,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:06,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:06,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:06,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:07,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:07,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:07,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 04:28:07,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 04:28:07,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:28:07,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 04:28:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 04:28:07,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:09,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:09,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:09,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:09,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:09,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:09,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:09,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:09,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:09,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:09,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:09,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:09,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:09,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:28:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:09,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:09,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:09,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:09,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:09,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:09,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:28:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:09,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:09,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:09,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:09,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:09,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:09,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:09,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:09,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:09,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:28:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:09,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:09,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:09,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:09,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:09,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:09,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:09,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:09,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:28:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:09,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:09,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:09,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:09,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:28:09,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:09,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:09,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:09,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:09,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:28:09,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429451578] [2020-10-13 04:28:09,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:09,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 04:28:09,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220270370] [2020-10-13 04:28:09,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 04:28:09,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:09,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 04:28:09,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:28:09,462 INFO L87 Difference]: Start difference. First operand 101 states and 130 transitions. Second operand 31 states. [2020-10-13 04:28:11,356 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-13 04:28:12,331 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-13 04:28:12,528 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2020-10-13 04:28:12,700 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-13 04:28:12,910 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-10-13 04:28:13,559 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-10-13 04:28:14,196 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-10-13 04:28:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:14,846 INFO L93 Difference]: Finished difference Result 163 states and 203 transitions. [2020-10-13 04:28:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-13 04:28:14,847 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 69 [2020-10-13 04:28:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:14,850 INFO L225 Difference]: With dead ends: 163 [2020-10-13 04:28:14,850 INFO L226 Difference]: Without dead ends: 158 [2020-10-13 04:28:14,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=684, Invalid=4286, Unknown=0, NotChecked=0, Total=4970 [2020-10-13 04:28:14,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-13 04:28:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 103. [2020-10-13 04:28:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 04:28:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 132 transitions. [2020-10-13 04:28:14,871 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 132 transitions. Word has length 69 [2020-10-13 04:28:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:14,871 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 132 transitions. [2020-10-13 04:28:14,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 04:28:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 132 transitions. [2020-10-13 04:28:14,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 04:28:14,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:14,873 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:14,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 04:28:14,873 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:14,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:14,873 INFO L82 PathProgramCache]: Analyzing trace with hash 35257692, now seen corresponding path program 8 times [2020-10-13 04:28:14,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:14,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704464757] [2020-10-13 04:28:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:15,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:15,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:16,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:16,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:17,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:17,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:19,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:19,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:19,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:19,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 04:28:19,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 04:28:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 04:28:19,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 04:28:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 04:28:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:22,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:22,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:22,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:22,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:22,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:22,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:22,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:22,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:22,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:22,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:28:22,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:28:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:22,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:22,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:22,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:22,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:22,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:22,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:22,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:28:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:22,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:22,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:22,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:22,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:22,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:22,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:22,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:22,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:22,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:28:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:22,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:22,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:22,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:22,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:22,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:22,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:22,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:22,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:22,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:28:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:22,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:22,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:22,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:28:22,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:22,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:28:22,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704464757] [2020-10-13 04:28:22,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:22,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 04:28:22,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094816348] [2020-10-13 04:28:22,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 04:28:22,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:22,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 04:28:22,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2020-10-13 04:28:22,331 INFO L87 Difference]: Start difference. First operand 103 states and 132 transitions. Second operand 32 states. [2020-10-13 04:28:23,751 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-13 04:28:24,199 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-13 04:28:24,446 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-13 04:28:24,775 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-13 04:28:25,091 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-13 04:28:25,618 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-10-13 04:28:25,788 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-13 04:28:25,977 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-13 04:28:26,181 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-13 04:28:26,541 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-13 04:28:26,951 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-13 04:28:27,239 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-13 04:28:27,567 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-10-13 04:28:27,835 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-13 04:28:28,249 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2020-10-13 04:28:28,451 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-10-13 04:28:28,760 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-13 04:28:29,389 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-13 04:28:29,602 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-13 04:28:29,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:29,950 INFO L93 Difference]: Finished difference Result 196 states and 253 transitions. [2020-10-13 04:28:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-13 04:28:29,950 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 69 [2020-10-13 04:28:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:29,952 INFO L225 Difference]: With dead ends: 196 [2020-10-13 04:28:29,952 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 04:28:29,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1571 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=828, Invalid=4722, Unknown=0, NotChecked=0, Total=5550 [2020-10-13 04:28:29,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 04:28:29,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 107. [2020-10-13 04:28:29,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 04:28:29,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2020-10-13 04:28:29,977 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 69 [2020-10-13 04:28:29,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:29,978 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2020-10-13 04:28:29,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 04:28:29,978 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2020-10-13 04:28:29,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 04:28:29,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:29,979 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:29,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 04:28:29,979 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:29,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:29,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1768309468, now seen corresponding path program 9 times [2020-10-13 04:28:29,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:29,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444424080] [2020-10-13 04:28:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:30,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:30,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:31,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:31,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:33,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:33,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:33,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:34,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:34,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:34,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 04:28:34,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 04:28:34,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:28:34,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 04:28:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:34,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 04:28:34,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:35,626 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-10-13 04:28:35,756 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-10-13 04:28:35,884 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-13 04:28:36,191 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2020-10-13 04:28:36,524 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2020-10-13 04:28:36,938 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2020-10-13 04:28:37,254 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-10-13 04:28:37,569 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2020-10-13 04:28:37,978 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 75 [2020-10-13 04:28:38,264 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2020-10-13 04:28:38,671 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2020-10-13 04:28:38,905 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2020-10-13 04:28:39,098 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-10-13 04:28:39,300 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-13 04:28:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:28:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:40,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:40,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:40,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:28:40,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:28:40,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:40,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:28:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:40,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:40,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:40,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:28:40,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:28:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:28:40,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:40,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:28:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:40,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:40,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:40,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:40,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:28:40,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:40,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:28:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:40,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:40,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:40,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:40,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:28:40,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:40,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:28:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:40,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:40,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 04:28:40,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:40,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:28:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:40,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:40,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:28:40,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:28:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 04:28:40,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:28:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:28:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:28:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:28:40,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444424080] [2020-10-13 04:28:40,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:28:40,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 04:28:40,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907321497] [2020-10-13 04:28:40,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 04:28:40,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:28:40,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 04:28:40,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2020-10-13 04:28:40,367 INFO L87 Difference]: Start difference. First operand 107 states and 140 transitions. Second operand 32 states. [2020-10-13 04:28:41,802 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-13 04:28:42,344 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 97 [2020-10-13 04:28:43,042 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 101 [2020-10-13 04:28:43,565 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 100 [2020-10-13 04:28:43,832 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-13 04:28:44,633 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 139 [2020-10-13 04:28:45,030 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 102 [2020-10-13 04:28:45,456 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-13 04:28:45,919 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2020-10-13 04:28:46,907 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 132 [2020-10-13 04:28:48,213 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 170 DAG size of output: 131 [2020-10-13 04:28:48,863 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 122 [2020-10-13 04:28:49,849 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 142 [2020-10-13 04:28:50,383 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 110 [2020-10-13 04:28:51,270 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 142 [2020-10-13 04:28:51,800 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 111 [2020-10-13 04:28:52,280 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 114 [2020-10-13 04:28:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:28:53,046 INFO L93 Difference]: Finished difference Result 181 states and 232 transitions. [2020-10-13 04:28:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-13 04:28:53,053 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 69 [2020-10-13 04:28:53,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:28:53,054 INFO L225 Difference]: With dead ends: 181 [2020-10-13 04:28:53,055 INFO L226 Difference]: Without dead ends: 176 [2020-10-13 04:28:53,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=448, Invalid=3212, Unknown=0, NotChecked=0, Total=3660 [2020-10-13 04:28:53,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-13 04:28:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 113. [2020-10-13 04:28:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 04:28:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 150 transitions. [2020-10-13 04:28:53,085 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 150 transitions. Word has length 69 [2020-10-13 04:28:53,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:28:53,086 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 150 transitions. [2020-10-13 04:28:53,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 04:28:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 150 transitions. [2020-10-13 04:28:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 04:28:53,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:28:53,087 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:28:53,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 04:28:53,087 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:28:53,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:28:53,088 INFO L82 PathProgramCache]: Analyzing trace with hash -37128866, now seen corresponding path program 3 times [2020-10-13 04:28:53,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:28:53,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383195898] [2020-10-13 04:28:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:28:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:28:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:54,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:54,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:55,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:57,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:57,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:57,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:57,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:28:58,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:28:58,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 04:28:58,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 04:28:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 04:28:58,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:28:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 04:28:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:28:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 04:28:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:28:58,596 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-10-13 04:28:58,725 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-13 04:28:58,870 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-13 04:28:59,028 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-13 04:28:59,214 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-13 04:28:59,391 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-13 04:28:59,572 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-13 04:28:59,771 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-10-13 04:29:00,067 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 64 [2020-10-13 04:29:00,362 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 62 [2020-10-13 04:29:00,674 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2020-10-13 04:29:01,019 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2020-10-13 04:29:01,214 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-13 04:29:01,423 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-10-13 04:29:02,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:02,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:02,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:02,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:02,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:02,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:02,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:02,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:02,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:02,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:02,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:02,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:02,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:02,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:29:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:02,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:02,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:02,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:02,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:02,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:29:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:02,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:02,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:02,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:02,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:02,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:02,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:02,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:02,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:29:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:02,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:02,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:02,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:02,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:02,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:02,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:02,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:29:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:02,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:02,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:02,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:02,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:29:02,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:02,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:02,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:02,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 04:29:02,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383195898] [2020-10-13 04:29:02,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:02,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 04:29:02,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47068125] [2020-10-13 04:29:02,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 04:29:02,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:02,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 04:29:02,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2020-10-13 04:29:02,354 INFO L87 Difference]: Start difference. First operand 113 states and 150 transitions. Second operand 31 states. [2020-10-13 04:29:03,889 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-13 04:29:04,103 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-10-13 04:29:04,401 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-10-13 04:29:04,736 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-10-13 04:29:04,984 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2020-10-13 04:29:05,265 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-13 04:29:05,495 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-13 04:29:05,887 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2020-10-13 04:29:06,223 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2020-10-13 04:29:06,780 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 116 [2020-10-13 04:29:07,255 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 110 [2020-10-13 04:29:07,683 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 100 [2020-10-13 04:29:08,033 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2020-10-13 04:29:08,461 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 102 [2020-10-13 04:29:08,797 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-13 04:29:09,064 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-13 04:29:10,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:10,213 INFO L93 Difference]: Finished difference Result 201 states and 262 transitions. [2020-10-13 04:29:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 04:29:10,218 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 69 [2020-10-13 04:29:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:10,220 INFO L225 Difference]: With dead ends: 201 [2020-10-13 04:29:10,220 INFO L226 Difference]: Without dead ends: 196 [2020-10-13 04:29:10,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=454, Invalid=3086, Unknown=0, NotChecked=0, Total=3540 [2020-10-13 04:29:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-13 04:29:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 113. [2020-10-13 04:29:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 04:29:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 150 transitions. [2020-10-13 04:29:10,246 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 150 transitions. Word has length 69 [2020-10-13 04:29:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:10,247 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 150 transitions. [2020-10-13 04:29:10,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 04:29:10,247 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 150 transitions. [2020-10-13 04:29:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 04:29:10,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:10,248 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:10,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 04:29:10,248 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:10,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:10,249 INFO L82 PathProgramCache]: Analyzing trace with hash -547364970, now seen corresponding path program 8 times [2020-10-13 04:29:10,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:10,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607182716] [2020-10-13 04:29:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:10,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:11,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:12,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:12,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:13,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:14,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:14,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:14,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:15,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:15,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 04:29:15,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 04:29:15,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 04:29:15,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:29:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 04:29:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 04:29:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:15,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:15,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:15,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:15,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:15,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:15,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:15,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:15,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:15,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:15,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:15,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:15,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:15,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:15,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:15,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:15,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:29:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:15,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:15,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:15,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:15,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:15,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:15,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:15,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:29:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:15,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:15,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:15,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:15,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:15,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:15,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:15,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:29:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:15,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:15,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:15,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:15,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:15,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:15,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:15,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:29:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:15,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:15,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:15,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:15,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-13 04:29:15,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607182716] [2020-10-13 04:29:15,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:15,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:29:15,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868485195] [2020-10-13 04:29:15,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:29:15,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:15,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:29:15,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:29:15,418 INFO L87 Difference]: Start difference. First operand 113 states and 150 transitions. Second operand 12 states. [2020-10-13 04:29:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:15,989 INFO L93 Difference]: Finished difference Result 213 states and 277 transitions. [2020-10-13 04:29:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 04:29:15,990 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-13 04:29:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:15,993 INFO L225 Difference]: With dead ends: 213 [2020-10-13 04:29:15,993 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 04:29:15,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 04:29:15,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 04:29:16,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 135. [2020-10-13 04:29:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-13 04:29:16,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 174 transitions. [2020-10-13 04:29:16,025 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 174 transitions. Word has length 71 [2020-10-13 04:29:16,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:16,025 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 174 transitions. [2020-10-13 04:29:16,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:29:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 174 transitions. [2020-10-13 04:29:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 04:29:16,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:16,027 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:16,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 04:29:16,027 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:16,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:16,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1935521126, now seen corresponding path program 9 times [2020-10-13 04:29:16,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:16,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042693822] [2020-10-13 04:29:16,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:16,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:17,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:18,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:19,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:19,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:20,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 04:29:21,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-13 04:29:21,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 04:29:21,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 04:29:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:29:21,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 04:29:21,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,281 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-10-13 04:29:21,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:21,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:21,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:21,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:29:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:21,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:21,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:29:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:21,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:29:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:21,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:29:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:21,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:29:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:21,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:21,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:21,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:21,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:21,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 04:29:21,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042693822] [2020-10-13 04:29:21,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:21,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 04:29:21,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057792363] [2020-10-13 04:29:21,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 04:29:21,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:21,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 04:29:21,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-13 04:29:21,907 INFO L87 Difference]: Start difference. First operand 135 states and 174 transitions. Second operand 21 states. [2020-10-13 04:29:24,602 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-13 04:29:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:26,464 INFO L93 Difference]: Finished difference Result 272 states and 352 transitions. [2020-10-13 04:29:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-13 04:29:26,465 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 79 [2020-10-13 04:29:26,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:26,468 INFO L225 Difference]: With dead ends: 272 [2020-10-13 04:29:26,468 INFO L226 Difference]: Without dead ends: 259 [2020-10-13 04:29:26,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=480, Invalid=3302, Unknown=0, NotChecked=0, Total=3782 [2020-10-13 04:29:26,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-13 04:29:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 175. [2020-10-13 04:29:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-13 04:29:26,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 237 transitions. [2020-10-13 04:29:26,507 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 237 transitions. Word has length 79 [2020-10-13 04:29:26,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:26,508 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 237 transitions. [2020-10-13 04:29:26,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 04:29:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 237 transitions. [2020-10-13 04:29:26,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 04:29:26,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:26,510 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:26,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 04:29:26,510 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:26,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:26,510 INFO L82 PathProgramCache]: Analyzing trace with hash 130082792, now seen corresponding path program 10 times [2020-10-13 04:29:26,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:26,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68917310] [2020-10-13 04:29:26,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:26,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:26,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:26,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:27,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:27,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:27,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:27,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:28,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:28,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:28,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:29,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:30,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:31,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:31,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 04:29:31,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-13 04:29:31,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:29:31,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 04:29:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:29:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 04:29:31,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:32,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:32,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:32,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:32,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:32,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:32,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:32,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:32,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:32,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:32,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:32,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:32,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:32,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:32,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:32,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:32,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:32,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:32,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:32,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:32,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:29:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:32,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:32,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:32,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:32,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:32,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:32,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:32,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:32,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:29:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:32,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:32,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:32,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:32,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:32,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:32,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:32,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:32,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:29:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:32,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:32,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:32,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:32,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:32,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:32,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:29:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:32,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:32,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:32,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 04:29:32,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:32,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:29:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:32,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:32,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:32,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:32,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:32,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:32,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 04:29:32,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68917310] [2020-10-13 04:29:32,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:32,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 04:29:32,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016252807] [2020-10-13 04:29:32,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 04:29:32,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:32,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 04:29:32,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-10-13 04:29:32,130 INFO L87 Difference]: Start difference. First operand 175 states and 237 transitions. Second operand 19 states. [2020-10-13 04:29:33,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:33,720 INFO L93 Difference]: Finished difference Result 260 states and 338 transitions. [2020-10-13 04:29:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 04:29:33,722 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 79 [2020-10-13 04:29:33,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:33,724 INFO L225 Difference]: With dead ends: 260 [2020-10-13 04:29:33,724 INFO L226 Difference]: Without dead ends: 247 [2020-10-13 04:29:33,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=207, Invalid=915, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 04:29:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-13 04:29:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 189. [2020-10-13 04:29:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-13 04:29:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 260 transitions. [2020-10-13 04:29:33,790 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 260 transitions. Word has length 79 [2020-10-13 04:29:33,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:33,791 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 260 transitions. [2020-10-13 04:29:33,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 04:29:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 260 transitions. [2020-10-13 04:29:33,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 04:29:33,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:33,794 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:33,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 04:29:33,795 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:33,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:33,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1863134568, now seen corresponding path program 11 times [2020-10-13 04:29:33,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:33,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248493510] [2020-10-13 04:29:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:33,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:33,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:33,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:34,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:34,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:34,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:34,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:36,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:36,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:36,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:36,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:36,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:36,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:36,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:37,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:37,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:37,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:38,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:38,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 04:29:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-13 04:29:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 04:29:38,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 04:29:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 04:29:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 04:29:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:38,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:38,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:38,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:38,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:38,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:38,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:38,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:38,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:38,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:38,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:38,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:38,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:38,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:38,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:38,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:38,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:38,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:38,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:38,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:38,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:29:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:38,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:38,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:38,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:38,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:38,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:38,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:38,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:29:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:38,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:38,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:38,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:38,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:38,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:38,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:38,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:38,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:38,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:38,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:38,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:29:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:38,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:38,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:38,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:38,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:38,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:38,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:38,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:38,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:38,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:38,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:38,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:29:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:38,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:38,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:38,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:38,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:38,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:38,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:38,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:38,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:38,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:29:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:38,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:38,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:38,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:38,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:38,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 04:29:38,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248493510] [2020-10-13 04:29:38,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:38,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 04:29:38,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890011014] [2020-10-13 04:29:38,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 04:29:38,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:38,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 04:29:38,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-13 04:29:38,967 INFO L87 Difference]: Start difference. First operand 189 states and 260 transitions. Second operand 12 states. [2020-10-13 04:29:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 04:29:39,731 INFO L93 Difference]: Finished difference Result 201 states and 272 transitions. [2020-10-13 04:29:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 04:29:39,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-13 04:29:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 04:29:39,734 INFO L225 Difference]: With dead ends: 201 [2020-10-13 04:29:39,735 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 04:29:39,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-13 04:29:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 04:29:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 64. [2020-10-13 04:29:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-13 04:29:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2020-10-13 04:29:39,756 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 79 [2020-10-13 04:29:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 04:29:39,756 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2020-10-13 04:29:39,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 04:29:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2020-10-13 04:29:39,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 04:29:39,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 04:29:39,757 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 04:29:39,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 04:29:39,757 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 04:29:39,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 04:29:39,758 INFO L82 PathProgramCache]: Analyzing trace with hash 30346146, now seen corresponding path program 10 times [2020-10-13 04:29:39,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 04:29:39,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759044544] [2020-10-13 04:29:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 04:29:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:39,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:40,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:42,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:44,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:44,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:44,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 04:29:44,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 04:29:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 04:29:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 04:29:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 04:29:44,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 04:29:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:45,831 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-13 04:29:46,185 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-10-13 04:29:46,530 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2020-10-13 04:29:46,702 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2020-10-13 04:29:46,937 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-10-13 04:29:47,131 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2020-10-13 04:29:47,321 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-10-13 04:29:48,637 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-13 04:29:49,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 04:29:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:49,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:49,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:49,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 04:29:49,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:49,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:49,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 04:29:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:49,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:49,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:49,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:49,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 04:29:49,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 04:29:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:49,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 04:29:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 04:29:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:49,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:49,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:49,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:49,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:49,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:49,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 04:29:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:49,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:49,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:49,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:49,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 04:29:49,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:49,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 04:29:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:49,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:49,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:49,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:49,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:49,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:49,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:49,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:49,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:49,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:49,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 04:29:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:49,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:49,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:49,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:49,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:49,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:49,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:49,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:49,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:49,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 04:29:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 04:29:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 04:29:49,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 04:29:49,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 04:29:49,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 04:29:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 04:29:49,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 04:29:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 04:29:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 04:29:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 04:29:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 04:29:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 04:29:49,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759044544] [2020-10-13 04:29:49,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 04:29:49,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-13 04:29:49,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428259812] [2020-10-13 04:29:49,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-13 04:29:49,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 04:29:49,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-13 04:29:49,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 04:29:49,138 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand 37 states. [2020-10-13 04:29:50,137 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2020-10-13 04:29:50,794 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2020-10-13 04:29:51,449 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 94 [2020-10-13 04:29:52,740 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 100 [2020-10-13 04:29:53,078 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-13 04:29:53,899 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-10-13 04:29:55,583 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-13 04:29:56,048 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-13 04:29:56,630 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86