/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/bitvector/soft_float_5a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:30:46,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:30:46,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:30:46,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:30:46,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:30:46,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:30:46,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:30:46,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:30:46,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:30:46,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:30:46,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:30:46,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:30:46,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:30:46,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:30:46,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:30:46,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:30:46,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:30:46,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:30:46,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:30:46,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:30:46,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:30:46,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:30:46,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:30:46,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:30:46,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:30:46,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:30:46,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:30:46,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:30:46,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:30:46,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:30:46,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:30:46,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:30:46,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:30:46,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:30:46,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:30:46,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:30:46,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:30:46,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:30:46,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:30:46,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:30:46,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:30:46,701 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 05:30:46,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:30:46,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:30:46,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:30:46,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:30:46,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:30:46,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:30:46,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:30:46,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:30:46,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:30:46,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:30:46,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:30:46,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:30:46,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:30:46,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:30:46,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:30:46,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:30:46,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:30:46,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:30:46,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:30:46,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:30:46,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:30:46,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:30:46,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:30:46,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:30:46,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:30:46,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:30:46,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:30:46,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:30:46,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:30:46,730 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 05:30:47,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:30:47,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:30:47,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:30:47,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:30:47,058 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:30:47,059 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-10-13 05:30:47,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61c854f0a/d4015ad56c8c43c4b94e5f2bdfdc1847/FLAG31537a25c [2020-10-13 05:30:47,677 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:30:47,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_5a.c.cil.c [2020-10-13 05:30:47,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61c854f0a/d4015ad56c8c43c4b94e5f2bdfdc1847/FLAG31537a25c [2020-10-13 05:30:47,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61c854f0a/d4015ad56c8c43c4b94e5f2bdfdc1847 [2020-10-13 05:30:48,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:30:48,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:30:48,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:30:48,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:30:48,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:30:48,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:30:48" (1/1) ... [2020-10-13 05:30:48,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee0cdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48, skipping insertion in model container [2020-10-13 05:30:48,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:30:48" (1/1) ... [2020-10-13 05:30:48,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:30:48,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:30:48,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:30:48,304 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:30:48,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:30:48,451 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:30:48,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48 WrapperNode [2020-10-13 05:30:48,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:30:48,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:30:48,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:30:48,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:30:48,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48" (1/1) ... [2020-10-13 05:30:48,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48" (1/1) ... [2020-10-13 05:30:48,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48" (1/1) ... [2020-10-13 05:30:48,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48" (1/1) ... [2020-10-13 05:30:48,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48" (1/1) ... [2020-10-13 05:30:48,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48" (1/1) ... [2020-10-13 05:30:48,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48" (1/1) ... [2020-10-13 05:30:48,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:30:48,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:30:48,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:30:48,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:30:48,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48" (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 05:30:48,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:30:48,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:30:48,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:30:48,567 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-13 05:30:48,567 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-13 05:30:48,567 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-13 05:30:48,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:30:48,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:30:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 05:30:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 05:30:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:30:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-13 05:30:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-13 05:30:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-13 05:30:48,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:30:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:30:48,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:30:49,053 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:30:49,053 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-13 05:30:49,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:30:49 BoogieIcfgContainer [2020-10-13 05:30:49,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:30:49,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:30:49,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:30:49,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:30:49,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:30:48" (1/3) ... [2020-10-13 05:30:49,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc95443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:30:49, skipping insertion in model container [2020-10-13 05:30:49,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:30:48" (2/3) ... [2020-10-13 05:30:49,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dc95443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:30:49, skipping insertion in model container [2020-10-13 05:30:49,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:30:49" (3/3) ... [2020-10-13 05:30:49,067 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2020-10-13 05:30:49,078 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:30:49,089 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:30:49,104 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:30:49,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:30:49,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:30:49,129 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:30:49,129 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:30:49,129 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:30:49,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:30:49,129 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:30:49,129 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:30:49,154 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-13 05:30:49,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 05:30:49,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:49,165 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:30:49,166 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:49,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:49,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1570912407, now seen corresponding path program 1 times [2020-10-13 05:30:49,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:49,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025963145] [2020-10-13 05:30:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:50,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 05:30:54,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:30:54,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:30:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:30:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:30:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 05:30:54,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 05:30:54,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:54,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:54,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:54,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:54,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:30:54,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:54,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:54,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:54,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:54,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:30:54,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:30:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:30:54,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:30:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:54,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 05:30:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:54,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:30:54,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:54,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 05:30:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:54,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:30:54,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:54,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 05:30:54,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:30:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:54,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:54,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:30:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 05:30:54,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:30:54,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:54,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:30:54,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025963145] [2020-10-13 05:30:54,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:54,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 05:30:54,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377030562] [2020-10-13 05:30:54,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:30:54,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:54,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:30:54,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:30:54,599 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 4 states. [2020-10-13 05:30:54,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:54,858 INFO L93 Difference]: Finished difference Result 143 states and 225 transitions. [2020-10-13 05:30:54,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:30:54,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-13 05:30:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:54,878 INFO L225 Difference]: With dead ends: 143 [2020-10-13 05:30:54,879 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 05:30:54,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:30:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 05:30:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2020-10-13 05:30:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 05:30:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 102 transitions. [2020-10-13 05:30:54,990 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 102 transitions. Word has length 48 [2020-10-13 05:30:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:54,991 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 102 transitions. [2020-10-13 05:30:54,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:30:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 102 transitions. [2020-10-13 05:30:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 05:30:54,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:54,997 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1] [2020-10-13 05:30:54,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:30:54,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:54,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:54,999 INFO L82 PathProgramCache]: Analyzing trace with hash -771486554, now seen corresponding path program 1 times [2020-10-13 05:30:54,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:54,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736367530] [2020-10-13 05:30:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:55,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:58,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 05:30:58,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:30:58,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3416 [2020-10-13 05:30:58,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:30:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:30:58,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:30:58,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:58,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:30:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:30:58,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:58,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:30:58,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:58,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:30:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:58,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:58,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:58,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:30:58,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:58,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:30:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:58,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:30:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:58,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 05:30:58,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 05:30:58,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:30:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:30:58,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:30:58,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:30:58,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 05:30:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:58,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:58,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:58,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:30:58,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:58,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 05:30:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:58,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:30:58,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:58,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:30:58,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:30:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:58,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 05:30:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:58,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:30:58,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:30:58,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:30:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:30:58,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:30:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:30:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:30:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:30:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:30:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:30:58,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736367530] [2020-10-13 05:30:58,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:30:58,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 05:30:58,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868590317] [2020-10-13 05:30:58,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:30:58,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:30:58,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:30:58,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:30:58,577 INFO L87 Difference]: Start difference. First operand 73 states and 102 transitions. Second operand 4 states. [2020-10-13 05:30:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:30:58,693 INFO L93 Difference]: Finished difference Result 138 states and 191 transitions. [2020-10-13 05:30:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:30:58,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-13 05:30:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:30:58,697 INFO L225 Difference]: With dead ends: 138 [2020-10-13 05:30:58,697 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 05:30:58,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:30:58,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 05:30:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2020-10-13 05:30:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-13 05:30:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 108 transitions. [2020-10-13 05:30:58,735 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 108 transitions. Word has length 51 [2020-10-13 05:30:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:30:58,738 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 108 transitions. [2020-10-13 05:30:58,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:30:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 108 transitions. [2020-10-13 05:30:58,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 05:30:58,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:30:58,741 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1] [2020-10-13 05:30:58,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:30:58,743 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:30:58,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:30:58,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1437145176, now seen corresponding path program 1 times [2020-10-13 05:30:58,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:30:58,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129136395] [2020-10-13 05:30:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:30:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:30:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:58,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:30:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:01,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 05:31:01,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 05:31:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3138 [2020-10-13 05:31:01,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:31:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:01,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 05:31:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:01,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:01,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:01,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:01,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:01,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:01,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:01,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:01,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:01,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:01,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:01,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:01,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:01,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:01,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 05:31:01,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:01,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:31:01,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:31:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 05:31:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:02,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:02,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:02,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:02,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:31:02,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:31:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:02,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:02,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:02,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:31:02,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:31:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:02,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:02,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:02,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:31:02,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:02,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:02,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:02,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129136395] [2020-10-13 05:31:02,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:02,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 05:31:02,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055557501] [2020-10-13 05:31:02,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:31:02,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:02,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:31:02,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:31:02,047 INFO L87 Difference]: Start difference. First operand 78 states and 108 transitions. Second operand 4 states. [2020-10-13 05:31:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:02,147 INFO L93 Difference]: Finished difference Result 142 states and 198 transitions. [2020-10-13 05:31:02,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 05:31:02,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-13 05:31:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:02,150 INFO L225 Difference]: With dead ends: 142 [2020-10-13 05:31:02,150 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 05:31:02,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:31:02,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 05:31:02,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2020-10-13 05:31:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 05:31:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 109 transitions. [2020-10-13 05:31:02,164 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 109 transitions. Word has length 52 [2020-10-13 05:31:02,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:02,164 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 109 transitions. [2020-10-13 05:31:02,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:31:02,165 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 109 transitions. [2020-10-13 05:31:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 05:31:02,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:02,167 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:02,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:31:02,167 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:02,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:02,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1553856699, now seen corresponding path program 1 times [2020-10-13 05:31:02,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:02,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019580260] [2020-10-13 05:31:02,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:02,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:05,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:05,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 05:31:05,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:31:05,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3189 [2020-10-13 05:31:05,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:05,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:05,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:05,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:31:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:05,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:05,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:05,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:05,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:05,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:05,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:05,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:05,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:05,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:05,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:05,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:05,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 05:31:05,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:05,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:05,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:05,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 05:31:05,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 05:31:05,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 05:31:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:05,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 05:31:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:05,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:05,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:05,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:05,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:31:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:05,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:05,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 05:31:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:05,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:05,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:05,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:05,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:05,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:05,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:31:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:05,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:05,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:05,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:31:05,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:05,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:05,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:05,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019580260] [2020-10-13 05:31:05,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:05,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 05:31:05,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247367556] [2020-10-13 05:31:05,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:31:05,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:05,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:31:05,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:31:05,539 INFO L87 Difference]: Start difference. First operand 79 states and 109 transitions. Second operand 5 states. [2020-10-13 05:31:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:05,648 INFO L93 Difference]: Finished difference Result 153 states and 213 transitions. [2020-10-13 05:31:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:31:05,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-13 05:31:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:05,650 INFO L225 Difference]: With dead ends: 153 [2020-10-13 05:31:05,651 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 05:31:05,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:31:05,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 05:31:05,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2020-10-13 05:31:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 05:31:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 111 transitions. [2020-10-13 05:31:05,664 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 111 transitions. Word has length 53 [2020-10-13 05:31:05,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:05,665 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 111 transitions. [2020-10-13 05:31:05,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:31:05,665 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 111 transitions. [2020-10-13 05:31:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 05:31:05,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:05,667 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:05,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:31:05,668 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:05,668 INFO L82 PathProgramCache]: Analyzing trace with hash 76110071, now seen corresponding path program 1 times [2020-10-13 05:31:05,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:05,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239226546] [2020-10-13 05:31:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:05,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:05,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:05,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 05:31:08,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:31:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3073 [2020-10-13 05:31:08,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 05:31:08,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:08,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:08,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:08,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:08,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:08,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 05:31:08,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 05:31:08,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:08,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 05:31:08,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 05:31:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:08,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:08,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:08,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:08,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 05:31:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:08,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:08,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:08,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:08,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 05:31:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:08,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:08,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:08,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:31:08,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:08,854 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:08,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239226546] [2020-10-13 05:31:08,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:08,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 05:31:08,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515049438] [2020-10-13 05:31:08,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 05:31:08,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:08,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 05:31:08,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:31:08,858 INFO L87 Difference]: Start difference. First operand 80 states and 111 transitions. Second operand 5 states. [2020-10-13 05:31:08,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:08,975 INFO L93 Difference]: Finished difference Result 162 states and 222 transitions. [2020-10-13 05:31:08,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:31:08,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 05:31:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:08,979 INFO L225 Difference]: With dead ends: 162 [2020-10-13 05:31:08,980 INFO L226 Difference]: Without dead ends: 103 [2020-10-13 05:31:08,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:31:08,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-13 05:31:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2020-10-13 05:31:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 05:31:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2020-10-13 05:31:09,011 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 54 [2020-10-13 05:31:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:09,012 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2020-10-13 05:31:09,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 05:31:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2020-10-13 05:31:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 05:31:09,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:09,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:09,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:31:09,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:09,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1237680982, now seen corresponding path program 1 times [2020-10-13 05:31:09,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:09,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144180770] [2020-10-13 05:31:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:09,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:09,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:09,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:10,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 05:31:13,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:31:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4296 [2020-10-13 05:31:13,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:31:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 05:31:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:31:13,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:13,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:13,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:13,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:13,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:13,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:13,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:13,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:13,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 05:31:13,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 05:31:13,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:13,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 05:31:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:13,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:13,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:13,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:31:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:13,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 05:31:13,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 05:31:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:31:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:13,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:13,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:13,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 05:31:13,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:13,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:31:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 05:31:13,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144180770] [2020-10-13 05:31:13,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:13,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 05:31:13,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30371365] [2020-10-13 05:31:13,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:31:13,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:13,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:31:13,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:31:13,593 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand 8 states. [2020-10-13 05:31:13,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:13,750 INFO L93 Difference]: Finished difference Result 145 states and 202 transitions. [2020-10-13 05:31:13,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:31:13,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-13 05:31:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:13,752 INFO L225 Difference]: With dead ends: 145 [2020-10-13 05:31:13,752 INFO L226 Difference]: Without dead ends: 121 [2020-10-13 05:31:13,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:31:13,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-13 05:31:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 97. [2020-10-13 05:31:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 05:31:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 134 transitions. [2020-10-13 05:31:13,766 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 134 transitions. Word has length 56 [2020-10-13 05:31:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:13,767 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 134 transitions. [2020-10-13 05:31:13,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:31:13,767 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 134 transitions. [2020-10-13 05:31:13,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 05:31:13,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:13,768 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:13,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:31:13,769 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:13,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:13,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1495846420, now seen corresponding path program 1 times [2020-10-13 05:31:13,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:13,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597758463] [2020-10-13 05:31:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:13,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:13,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:14,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:14,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:14,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 05:31:14,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-10-13 05:31:14,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 05:31:14,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:14,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:14,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:14,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:14,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:14,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:14,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:14,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:14,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:14,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:14,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:14,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:14,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:14,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:14,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:14,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:14,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:14,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:14,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:14,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:14,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 05:31:14,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:14,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 05:31:14,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:14,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 05:31:14,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 05:31:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:14,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:14,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:14,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:14,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:14,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:14,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:14,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:14,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:31:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:14,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:14,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:14,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:14,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:14,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:14,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:14,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:14,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:31:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:14,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:14,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:14,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:14,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:14,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:14,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:14,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:14,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:14,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597758463] [2020-10-13 05:31:14,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:14,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:31:14,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003235811] [2020-10-13 05:31:14,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:31:14,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:14,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:31:14,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:31:14,801 INFO L87 Difference]: Start difference. First operand 97 states and 134 transitions. Second operand 6 states. [2020-10-13 05:31:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:15,029 INFO L93 Difference]: Finished difference Result 215 states and 296 transitions. [2020-10-13 05:31:15,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:31:15,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 05:31:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:15,032 INFO L225 Difference]: With dead ends: 215 [2020-10-13 05:31:15,032 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 05:31:15,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:15,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 05:31:15,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 96. [2020-10-13 05:31:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-13 05:31:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 130 transitions. [2020-10-13 05:31:15,054 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 130 transitions. Word has length 56 [2020-10-13 05:31:15,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:15,059 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 130 transitions. [2020-10-13 05:31:15,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:31:15,059 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 130 transitions. [2020-10-13 05:31:15,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 05:31:15,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:15,061 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1] [2020-10-13 05:31:15,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 05:31:15,062 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:15,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:15,062 INFO L82 PathProgramCache]: Analyzing trace with hash 972597700, now seen corresponding path program 1 times [2020-10-13 05:31:15,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:15,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267860403] [2020-10-13 05:31:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 05:31:15,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-13 05:31:15,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 05:31:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 05:31:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:15,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:15,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:15,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:15,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:15,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 05:31:15,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 05:31:15,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:15,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:15,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 05:31:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:15,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:15,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:15,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:31:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:15,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:15,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:15,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:31:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:15,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:15,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:31:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:31:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 05:31:15,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267860403] [2020-10-13 05:31:15,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:15,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:31:15,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017323180] [2020-10-13 05:31:15,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:31:15,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:15,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:31:15,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:31:15,801 INFO L87 Difference]: Start difference. First operand 96 states and 130 transitions. Second operand 3 states. [2020-10-13 05:31:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:15,814 INFO L93 Difference]: Finished difference Result 108 states and 146 transitions. [2020-10-13 05:31:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:31:15,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-10-13 05:31:15,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:15,817 INFO L225 Difference]: With dead ends: 108 [2020-10-13 05:31:15,817 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 05:31:15,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 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 05:31:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 05:31:15,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-13 05:31:15,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-13 05:31:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 128 transitions. [2020-10-13 05:31:15,833 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 128 transitions. Word has length 57 [2020-10-13 05:31:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:15,834 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 128 transitions. [2020-10-13 05:31:15,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:31:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 128 transitions. [2020-10-13 05:31:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 05:31:15,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:15,835 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:15,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 05:31:15,836 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:15,836 INFO L82 PathProgramCache]: Analyzing trace with hash -155418904, now seen corresponding path program 1 times [2020-10-13 05:31:15,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:15,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762722280] [2020-10-13 05:31:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:16,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 05:31:20,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:31:20,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:31:20,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:20,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 05:31:20,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:20,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:20,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:20,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:20,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:20,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:20,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:20,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:20,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:20,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 05:31:20,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 05:31:20,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 05:31:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 05:31:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:20,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:20,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:20,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 05:31:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:20,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:20,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:31:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:20,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:20,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:20,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:20,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 05:31:20,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:20,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:20,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762722280] [2020-10-13 05:31:20,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:20,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 05:31:20,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719931363] [2020-10-13 05:31:20,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:31:20,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:20,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:31:20,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:31:20,977 INFO L87 Difference]: Start difference. First operand 96 states and 128 transitions. Second operand 6 states. [2020-10-13 05:31:21,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:21,100 INFO L93 Difference]: Finished difference Result 191 states and 258 transitions. [2020-10-13 05:31:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:31:21,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-13 05:31:21,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:21,103 INFO L225 Difference]: With dead ends: 191 [2020-10-13 05:31:21,103 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 05:31:21,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 05:31:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2020-10-13 05:31:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 05:31:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 133 transitions. [2020-10-13 05:31:21,123 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 133 transitions. Word has length 59 [2020-10-13 05:31:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:21,124 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 133 transitions. [2020-10-13 05:31:21,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:31:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 133 transitions. [2020-10-13 05:31:21,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 05:31:21,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:21,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:21,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 05:31:21,126 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:21,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1612630585, now seen corresponding path program 1 times [2020-10-13 05:31:21,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:21,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119709970] [2020-10-13 05:31:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:21,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:21,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:21,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:21,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 05:31:26,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:31:26,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:31:26,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:31:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:26,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 05:31:26,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:26,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:26,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:26,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:26,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:26,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:26,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:26,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 05:31:26,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 05:31:26,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:31:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:26,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 05:31:26,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 05:31:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:26,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:26,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:26,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 05:31:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:26,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:26,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:26,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:26,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:26,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:26,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:31:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:26,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:26,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:26,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 05:31:26,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:26,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:26,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:26,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119709970] [2020-10-13 05:31:26,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:26,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 05:31:26,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375608884] [2020-10-13 05:31:26,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:31:26,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:26,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:31:26,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:31:26,359 INFO L87 Difference]: Start difference. First operand 100 states and 133 transitions. Second operand 7 states. [2020-10-13 05:31:26,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:26,646 INFO L93 Difference]: Finished difference Result 214 states and 290 transitions. [2020-10-13 05:31:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:31:26,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-10-13 05:31:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:26,648 INFO L225 Difference]: With dead ends: 214 [2020-10-13 05:31:26,649 INFO L226 Difference]: Without dead ends: 134 [2020-10-13 05:31:26,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:31:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-13 05:31:26,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 102. [2020-10-13 05:31:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 05:31:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 136 transitions. [2020-10-13 05:31:26,665 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 136 transitions. Word has length 61 [2020-10-13 05:31:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:26,665 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 136 transitions. [2020-10-13 05:31:26,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:31:26,665 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 136 transitions. [2020-10-13 05:31:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 05:31:26,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:26,667 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2020-10-13 05:31:26,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 05:31:26,667 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:26,667 INFO L82 PathProgramCache]: Analyzing trace with hash 249358905, now seen corresponding path program 2 times [2020-10-13 05:31:26,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:26,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479710177] [2020-10-13 05:31:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:26,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:26,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:31,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 05:31:31,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 05:31:31,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:31:31,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 05:31:31,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 05:31:31,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:31,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:31,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:31,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:31,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:31,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:31,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:31,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:31,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:31,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:31,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:31,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:31,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:31,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:31:31,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 05:31:31,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:31,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:31,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 05:31:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:31,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:31,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:31,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:31,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:31,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:31,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:31:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:31,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:31,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:31,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:31,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:31,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:31:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:31,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:31,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 05:31:31,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 05:31:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 05:31:31,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479710177] [2020-10-13 05:31:31,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:31,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:31:31,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432954993] [2020-10-13 05:31:31,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:31:31,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:31,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:31:31,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:31:31,811 INFO L87 Difference]: Start difference. First operand 102 states and 136 transitions. Second operand 6 states. [2020-10-13 05:31:31,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:31,911 INFO L93 Difference]: Finished difference Result 122 states and 162 transitions. [2020-10-13 05:31:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:31:31,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-13 05:31:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:31,914 INFO L225 Difference]: With dead ends: 122 [2020-10-13 05:31:31,914 INFO L226 Difference]: Without dead ends: 117 [2020-10-13 05:31:31,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:31:31,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-13 05:31:31,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2020-10-13 05:31:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 05:31:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 139 transitions. [2020-10-13 05:31:31,923 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 139 transitions. Word has length 62 [2020-10-13 05:31:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:31,924 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 139 transitions. [2020-10-13 05:31:31,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:31:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 139 transitions. [2020-10-13 05:31:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 05:31:31,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:31,925 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:31,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 05:31:31,926 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:31,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:31,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1118983907, now seen corresponding path program 1 times [2020-10-13 05:31:31,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:31,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118880758] [2020-10-13 05:31:31,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:31,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 05:31:32,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:32,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-13 05:31:32,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:32,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 05:31:32,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:31:32,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:32,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:32,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:32,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:32,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:31:32,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:32,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 05:31:32,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 05:31:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:32,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:32,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:31:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:32,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:32,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:31:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:32,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:32,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 05:31:32,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118880758] [2020-10-13 05:31:32,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:32,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:31:32,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857878735] [2020-10-13 05:31:32,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:31:32,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:32,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:31:32,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:31:32,254 INFO L87 Difference]: Start difference. First operand 105 states and 139 transitions. Second operand 6 states. [2020-10-13 05:31:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:32,291 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2020-10-13 05:31:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:31:32,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 05:31:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:32,293 INFO L225 Difference]: With dead ends: 111 [2020-10-13 05:31:32,293 INFO L226 Difference]: Without dead ends: 105 [2020-10-13 05:31:32,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:31:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-13 05:31:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-13 05:31:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 05:31:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 138 transitions. [2020-10-13 05:31:32,303 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 138 transitions. Word has length 64 [2020-10-13 05:31:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:32,303 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 138 transitions. [2020-10-13 05:31:32,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:31:32,304 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 138 transitions. [2020-10-13 05:31:32,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 05:31:32,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:32,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:32,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 05:31:32,305 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:32,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1176242209, now seen corresponding path program 1 times [2020-10-13 05:31:32,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:32,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398144383] [2020-10-13 05:31:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 05:31:32,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:32,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-13 05:31:32,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 05:31:32,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-13 05:31:32,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:31:32,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:32,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:32,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:32,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:32,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:32,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:31:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 05:31:32,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 05:31:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:32,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:32,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:32,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:31:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:32,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:32,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:32,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:31:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:32,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:32,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:32,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 05:31:32,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:32,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 05:31:32,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:32,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 05:31:32,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-13 05:31:32,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398144383] [2020-10-13 05:31:32,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:32,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 05:31:32,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614853817] [2020-10-13 05:31:32,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 05:31:32,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:32,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 05:31:32,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 05:31:32,668 INFO L87 Difference]: Start difference. First operand 105 states and 138 transitions. Second operand 6 states. [2020-10-13 05:31:32,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:32,715 INFO L93 Difference]: Finished difference Result 119 states and 152 transitions. [2020-10-13 05:31:32,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 05:31:32,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 05:31:32,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:32,716 INFO L225 Difference]: With dead ends: 119 [2020-10-13 05:31:32,717 INFO L226 Difference]: Without dead ends: 101 [2020-10-13 05:31:32,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:31:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-13 05:31:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-10-13 05:31:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 05:31:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 128 transitions. [2020-10-13 05:31:32,725 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 128 transitions. Word has length 64 [2020-10-13 05:31:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:32,725 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 128 transitions. [2020-10-13 05:31:32,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 05:31:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 128 transitions. [2020-10-13 05:31:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 05:31:32,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:32,726 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:32,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 05:31:32,727 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:32,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2101972268, now seen corresponding path program 1 times [2020-10-13 05:31:32,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:32,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405328282] [2020-10-13 05:31:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:32,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:32,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:31:33,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:31:33,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 690 [2020-10-13 05:31:33,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 05:31:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 05:31:33,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 05:31:33,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:33,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:33,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:33,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:33,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:33,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:33,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:31:33,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 05:31:33,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 05:31:33,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 05:31:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:33,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:33,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:31:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:33,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:33,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:33,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:33,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:31:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:33,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:33,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:33,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 05:31:33,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:31:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 05:31:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-13 05:31:33,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405328282] [2020-10-13 05:31:33,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:31:33,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 05:31:33,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709203169] [2020-10-13 05:31:33,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 05:31:33,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:33,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 05:31:33,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 05:31:33,503 INFO L87 Difference]: Start difference. First operand 100 states and 128 transitions. Second operand 4 states. [2020-10-13 05:31:33,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:33,531 INFO L93 Difference]: Finished difference Result 115 states and 145 transitions. [2020-10-13 05:31:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 05:31:33,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-13 05:31:33,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:33,532 INFO L225 Difference]: With dead ends: 115 [2020-10-13 05:31:33,532 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 05:31:33,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 05:31:33,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 05:31:33,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-13 05:31:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 05:31:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 127 transitions. [2020-10-13 05:31:33,541 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 127 transitions. Word has length 66 [2020-10-13 05:31:33,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:33,541 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 127 transitions. [2020-10-13 05:31:33,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 05:31:33,541 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 127 transitions. [2020-10-13 05:31:33,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 05:31:33,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:33,542 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:33,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 05:31:33,543 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:33,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:33,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1080903914, now seen corresponding path program 1 times [2020-10-13 05:31:33,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:33,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931861854] [2020-10-13 05:31:33,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:33,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 05:31:34,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:34,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1260 [2020-10-13 05:31:34,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:31:34,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:34,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 05:31:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:34,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:34,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:34,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:34,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:34,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:34,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:34,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 05:31:34,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 05:31:34,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 05:31:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 05:31:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 05:31:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:34,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:34,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 05:31:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:34,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:34,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:31:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:34,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:34,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:34,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:34,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:34,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:34,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:34,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:34,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:34,933 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:34,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931861854] [2020-10-13 05:31:34,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:34,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 05:31:34,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756320646] [2020-10-13 05:31:34,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 05:31:34,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:34,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 05:31:34,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-10-13 05:31:34,935 INFO L87 Difference]: Start difference. First operand 100 states and 127 transitions. Second operand 7 states. [2020-10-13 05:31:35,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:35,013 INFO L93 Difference]: Finished difference Result 206 states and 265 transitions. [2020-10-13 05:31:35,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 05:31:35,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-13 05:31:35,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:35,015 INFO L225 Difference]: With dead ends: 206 [2020-10-13 05:31:35,015 INFO L226 Difference]: Without dead ends: 128 [2020-10-13 05:31:35,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:31:35,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-13 05:31:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 104. [2020-10-13 05:31:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-13 05:31:35,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2020-10-13 05:31:35,025 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 66 [2020-10-13 05:31:35,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:35,026 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2020-10-13 05:31:35,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 05:31:35,026 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2020-10-13 05:31:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 05:31:35,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:35,027 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:35,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 05:31:35,027 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:35,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:35,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1340213257, now seen corresponding path program 1 times [2020-10-13 05:31:35,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:35,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749540270] [2020-10-13 05:31:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:35,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:35,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:35,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 05:31:36,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1485 [2020-10-13 05:31:36,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:31:36,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:36,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 05:31:36,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:36,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:36,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:36,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:36,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:36,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:36,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:36,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:36,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 05:31:36,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 05:31:36,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:31:36,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:36,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 05:31:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 05:31:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:36,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:36,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:36,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 05:31:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:36,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:36,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:36,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:31:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:36,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:36,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:36,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:36,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:36,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749540270] [2020-10-13 05:31:36,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:36,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 05:31:36,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972652201] [2020-10-13 05:31:36,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:31:36,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:36,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:31:36,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:31:36,743 INFO L87 Difference]: Start difference. First operand 104 states and 132 transitions. Second operand 8 states. [2020-10-13 05:31:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:36,893 INFO L93 Difference]: Finished difference Result 205 states and 263 transitions. [2020-10-13 05:31:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 05:31:36,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-13 05:31:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:36,895 INFO L225 Difference]: With dead ends: 205 [2020-10-13 05:31:36,895 INFO L226 Difference]: Without dead ends: 130 [2020-10-13 05:31:36,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:36,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-13 05:31:36,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-10-13 05:31:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 05:31:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2020-10-13 05:31:36,905 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 134 transitions. Word has length 68 [2020-10-13 05:31:36,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:36,906 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 134 transitions. [2020-10-13 05:31:36,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:31:36,906 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 134 transitions. [2020-10-13 05:31:36,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 05:31:36,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:36,907 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:36,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 05:31:36,907 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:36,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:36,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1068650375, now seen corresponding path program 2 times [2020-10-13 05:31:36,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:36,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176442287] [2020-10-13 05:31:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 05:31:38,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:38,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1337 [2020-10-13 05:31:38,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:31:38,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:38,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 05:31:38,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:38,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:38,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:38,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:38,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:38,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:38,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:38,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:38,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:38,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 05:31:38,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 05:31:38,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 05:31:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:31:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:38,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 05:31:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:38,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:38,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:38,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:38,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:38,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 05:31:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:38,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:38,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:38,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:31:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:38,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:38,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:38,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:38,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:38,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:38,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:38,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176442287] [2020-10-13 05:31:38,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:38,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 05:31:38,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679040461] [2020-10-13 05:31:38,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 05:31:38,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:38,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 05:31:38,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 05:31:38,401 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. Second operand 8 states. [2020-10-13 05:31:38,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:38,578 INFO L93 Difference]: Finished difference Result 223 states and 285 transitions. [2020-10-13 05:31:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:31:38,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-13 05:31:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:38,581 INFO L225 Difference]: With dead ends: 223 [2020-10-13 05:31:38,581 INFO L226 Difference]: Without dead ends: 142 [2020-10-13 05:31:38,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:31:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-13 05:31:38,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2020-10-13 05:31:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 05:31:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions. [2020-10-13 05:31:38,605 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 69 [2020-10-13 05:31:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:38,606 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions. [2020-10-13 05:31:38,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 05:31:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions. [2020-10-13 05:31:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 05:31:38,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:38,610 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:38,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 05:31:38,611 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:38,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:38,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1497810904, now seen corresponding path program 2 times [2020-10-13 05:31:38,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:38,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411611872] [2020-10-13 05:31:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:38,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 05:31:40,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1752 [2020-10-13 05:31:40,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:31:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:40,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 05:31:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:40,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:40,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:40,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:40,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:40,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:40,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 05:31:40,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 05:31:40,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:31:40,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:40,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 05:31:40,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 05:31:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:40,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:40,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:40,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:40,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:31:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:40,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:40,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:31:40,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:31:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:40,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:40,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:40,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:40,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:40,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:40,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:40,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:40,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:40,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411611872] [2020-10-13 05:31:40,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:40,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:31:40,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833333409] [2020-10-13 05:31:40,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:31:40,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:40,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:31:40,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:40,626 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 9 states. [2020-10-13 05:31:40,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:40,814 INFO L93 Difference]: Finished difference Result 217 states and 280 transitions. [2020-10-13 05:31:40,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 05:31:40,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-13 05:31:40,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:40,815 INFO L225 Difference]: With dead ends: 217 [2020-10-13 05:31:40,816 INFO L226 Difference]: Without dead ends: 139 [2020-10-13 05:31:40,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:31:40,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-13 05:31:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 111. [2020-10-13 05:31:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 05:31:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 143 transitions. [2020-10-13 05:31:40,826 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 143 transitions. Word has length 71 [2020-10-13 05:31:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:40,827 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 143 transitions. [2020-10-13 05:31:40,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:31:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 143 transitions. [2020-10-13 05:31:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 05:31:40,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:40,828 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:40,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 05:31:40,829 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:40,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:40,829 INFO L82 PathProgramCache]: Analyzing trace with hash -478090614, now seen corresponding path program 3 times [2020-10-13 05:31:40,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:40,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336117070] [2020-10-13 05:31:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:40,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:41,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 05:31:42,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:42,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1591 [2020-10-13 05:31:42,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:31:42,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:42,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 05:31:42,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:42,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:42,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:42,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:42,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:42,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 05:31:42,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 05:31:42,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 05:31:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:31:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 05:31:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:42,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:42,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 05:31:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:42,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:42,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:42,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:31:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:42,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:42,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:42,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:42,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:42,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:42,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:42,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:42,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:42,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336117070] [2020-10-13 05:31:42,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:42,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 05:31:42,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798613160] [2020-10-13 05:31:42,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 05:31:42,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:42,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 05:31:42,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 05:31:42,570 INFO L87 Difference]: Start difference. First operand 111 states and 143 transitions. Second operand 9 states. [2020-10-13 05:31:42,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:42,734 INFO L93 Difference]: Finished difference Result 243 states and 311 transitions. [2020-10-13 05:31:42,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:31:42,734 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-13 05:31:42,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:42,736 INFO L225 Difference]: With dead ends: 243 [2020-10-13 05:31:42,736 INFO L226 Difference]: Without dead ends: 159 [2020-10-13 05:31:42,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:31:42,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-13 05:31:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 116. [2020-10-13 05:31:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-13 05:31:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 150 transitions. [2020-10-13 05:31:42,753 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 150 transitions. Word has length 72 [2020-10-13 05:31:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:42,753 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 150 transitions. [2020-10-13 05:31:42,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 05:31:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 150 transitions. [2020-10-13 05:31:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 05:31:42,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:42,755 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:42,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 05:31:42,756 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:42,756 INFO L82 PathProgramCache]: Analyzing trace with hash 2090058153, now seen corresponding path program 3 times [2020-10-13 05:31:42,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:42,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534754643] [2020-10-13 05:31:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:42,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:44,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 05:31:44,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2161 [2020-10-13 05:31:44,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:31:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 05:31:44,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:44,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:44,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:44,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:44,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:44,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:44,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:44,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:44,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:44,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:44,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:45,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:45,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 05:31:45,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 05:31:45,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:45,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:31:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 05:31:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:45,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 05:31:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:45,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:45,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:45,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:45,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:45,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:45,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:45,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:31:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:45,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:45,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:45,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:45,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:45,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:45,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:45,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:45,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:45,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:45,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:31:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:45,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:45,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:45,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:45,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:45,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:45,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534754643] [2020-10-13 05:31:45,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:45,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:31:45,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659330684] [2020-10-13 05:31:45,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:31:45,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:45,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:31:45,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:31:45,175 INFO L87 Difference]: Start difference. First operand 116 states and 150 transitions. Second operand 10 states. [2020-10-13 05:31:45,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:45,392 INFO L93 Difference]: Finished difference Result 229 states and 297 transitions. [2020-10-13 05:31:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 05:31:45,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-13 05:31:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:45,394 INFO L225 Difference]: With dead ends: 229 [2020-10-13 05:31:45,394 INFO L226 Difference]: Without dead ends: 148 [2020-10-13 05:31:45,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:31:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-13 05:31:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 117. [2020-10-13 05:31:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 05:31:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2020-10-13 05:31:45,407 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 74 [2020-10-13 05:31:45,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:45,407 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2020-10-13 05:31:45,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:31:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2020-10-13 05:31:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 05:31:45,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:45,408 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:45,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 05:31:45,409 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:45,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:45,409 INFO L82 PathProgramCache]: Analyzing trace with hash 701704921, now seen corresponding path program 4 times [2020-10-13 05:31:45,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:45,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108642424] [2020-10-13 05:31:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:45,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:45,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:45,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:47,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 05:31:47,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1813 [2020-10-13 05:31:47,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:31:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:47,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 05:31:47,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:47,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:47,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:47,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:47,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:47,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:47,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:47,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:47,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:47,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:47,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:47,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:47,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 05:31:47,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 05:31:47,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 05:31:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 05:31:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 05:31:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:47,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:47,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:47,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:47,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:47,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:47,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 05:31:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:47,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:47,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:47,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:47,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:47,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:31:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:47,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:47,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:47,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:47,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:47,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108642424] [2020-10-13 05:31:47,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:47,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 05:31:47,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537047408] [2020-10-13 05:31:47,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 05:31:47,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:47,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 05:31:47,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 05:31:47,364 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand 10 states. [2020-10-13 05:31:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:47,564 INFO L93 Difference]: Finished difference Result 263 states and 337 transitions. [2020-10-13 05:31:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 05:31:47,565 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-13 05:31:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:47,566 INFO L225 Difference]: With dead ends: 263 [2020-10-13 05:31:47,566 INFO L226 Difference]: Without dead ends: 176 [2020-10-13 05:31:47,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:31:47,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-13 05:31:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 122. [2020-10-13 05:31:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-13 05:31:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 159 transitions. [2020-10-13 05:31:47,582 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 159 transitions. Word has length 75 [2020-10-13 05:31:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:47,582 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 159 transitions. [2020-10-13 05:31:47,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 05:31:47,582 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 159 transitions. [2020-10-13 05:31:47,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 05:31:47,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:47,584 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:47,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 05:31:47,584 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:47,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:47,584 INFO L82 PathProgramCache]: Analyzing trace with hash 2002201144, now seen corresponding path program 4 times [2020-10-13 05:31:47,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:47,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675305173] [2020-10-13 05:31:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:47,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:48,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:49,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:49,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 05:31:49,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:49,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2286 [2020-10-13 05:31:49,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:31:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 05:31:49,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:49,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:49,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:49,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:49,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:49,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:49,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:49,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:49,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:49,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:49,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:49,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 05:31:49,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 05:31:49,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:31:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 05:31:49,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 05:31:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:50,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:50,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:50,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:50,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:50,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:50,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:50,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 05:31:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:50,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:50,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:50,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:50,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:50,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:50,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:50,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:31:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:50,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:50,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:50,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:50,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:50,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:50,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:50,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:50,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675305173] [2020-10-13 05:31:50,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:50,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 05:31:50,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474181223] [2020-10-13 05:31:50,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 05:31:50,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:50,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 05:31:50,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:31:50,157 INFO L87 Difference]: Start difference. First operand 122 states and 159 transitions. Second operand 11 states. [2020-10-13 05:31:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:50,442 INFO L93 Difference]: Finished difference Result 241 states and 314 transitions. [2020-10-13 05:31:50,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 05:31:50,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-10-13 05:31:50,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:50,445 INFO L225 Difference]: With dead ends: 241 [2020-10-13 05:31:50,445 INFO L226 Difference]: Without dead ends: 157 [2020-10-13 05:31:50,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:31:50,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-13 05:31:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 123. [2020-10-13 05:31:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-13 05:31:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2020-10-13 05:31:50,459 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 77 [2020-10-13 05:31:50,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:50,459 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2020-10-13 05:31:50,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 05:31:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2020-10-13 05:31:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 05:31:50,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:50,461 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:50,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 05:31:50,461 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:50,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2021862358, now seen corresponding path program 5 times [2020-10-13 05:31:50,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:50,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369910091] [2020-10-13 05:31:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:50,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:52,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:52,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 05:31:52,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1888 [2020-10-13 05:31:52,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:31:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 05:31:52,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:52,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:52,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:52,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:52,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:52,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:52,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:52,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:52,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:52,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:52,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:52,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:52,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:52,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:52,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:52,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:52,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:52,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:52,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 05:31:52,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:52,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 05:31:52,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:52,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 05:31:52,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:52,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 05:31:52,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:52,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 05:31:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:52,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:52,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:52,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:52,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:52,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:52,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:52,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 05:31:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:52,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:52,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:52,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:52,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:52,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:52,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:31:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:52,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:52,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:52,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:52,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:52,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:52,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 4 proven. 86 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:52,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369910091] [2020-10-13 05:31:52,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:52,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 05:31:52,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308306018] [2020-10-13 05:31:52,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 05:31:52,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:52,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 05:31:52,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 05:31:52,519 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand 11 states. [2020-10-13 05:31:52,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:52,773 INFO L93 Difference]: Finished difference Result 283 states and 363 transitions. [2020-10-13 05:31:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 05:31:52,774 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-10-13 05:31:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:52,776 INFO L225 Difference]: With dead ends: 283 [2020-10-13 05:31:52,776 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 05:31:52,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:31:52,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 05:31:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 128. [2020-10-13 05:31:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-13 05:31:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 168 transitions. [2020-10-13 05:31:52,790 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 168 transitions. Word has length 78 [2020-10-13 05:31:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:52,791 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 168 transitions. [2020-10-13 05:31:52,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 05:31:52,791 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 168 transitions. [2020-10-13 05:31:52,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 05:31:52,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:52,792 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:52,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 05:31:52,793 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:52,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:52,793 INFO L82 PathProgramCache]: Analyzing trace with hash 289129289, now seen corresponding path program 5 times [2020-10-13 05:31:52,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:52,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266338757] [2020-10-13 05:31:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:52,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:52,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:54,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:55,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:55,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 05:31:55,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:55,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2561 [2020-10-13 05:31:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:31:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 05:31:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:55,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:55,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:55,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:55,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:55,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:55,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:55,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:55,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:55,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:55,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:55,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:55,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:55,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:55,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:55,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 05:31:55,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:55,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 05:31:55,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:31:55,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 05:31:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 05:31:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:55,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:55,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:55,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:55,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:55,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:31:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:55,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:55,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:55,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:55,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:55,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:55,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:55,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:55,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:31:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:55,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:55,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:55,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:55,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:55,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:55,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 4 proven. 93 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:55,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266338757] [2020-10-13 05:31:55,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:55,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:31:55,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660320623] [2020-10-13 05:31:55,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:31:55,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:55,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:31:55,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:31:55,658 INFO L87 Difference]: Start difference. First operand 128 states and 168 transitions. Second operand 12 states. [2020-10-13 05:31:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:55,982 INFO L93 Difference]: Finished difference Result 253 states and 331 transitions. [2020-10-13 05:31:55,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 05:31:55,984 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-13 05:31:55,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:55,986 INFO L225 Difference]: With dead ends: 253 [2020-10-13 05:31:55,986 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 05:31:55,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:31:55,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 05:31:56,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 129. [2020-10-13 05:31:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-13 05:31:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 170 transitions. [2020-10-13 05:31:56,002 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 170 transitions. Word has length 80 [2020-10-13 05:31:56,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:56,003 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 170 transitions. [2020-10-13 05:31:56,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:31:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 170 transitions. [2020-10-13 05:31:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 05:31:56,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:56,005 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:56,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 05:31:56,009 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:56,009 INFO L82 PathProgramCache]: Analyzing trace with hash 707484985, now seen corresponding path program 6 times [2020-10-13 05:31:56,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:56,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018240257] [2020-10-13 05:31:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:56,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:58,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:58,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 05:31:58,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:31:58,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2329 [2020-10-13 05:31:58,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:31:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:31:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 05:31:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:31:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:58,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:58,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:31:58,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:58,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:31:58,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:58,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:58,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:58,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:58,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:58,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:31:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:58,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:58,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:58,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:58,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:58,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:31:58,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:58,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:31:58,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:58,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:31:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:58,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:58,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 05:31:58,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 05:31:58,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 05:31:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:31:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 05:31:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:58,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 05:31:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:58,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:58,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:31:58,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:58,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:31:58,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:58,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:58,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 05:31:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:58,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:31:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:31:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:31:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:58,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 05:31:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:58,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:58,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:31:58,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:31:58,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:31:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:31:58,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:31:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:31:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:31:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:31:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:31:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 4 proven. 109 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:31:58,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018240257] [2020-10-13 05:31:58,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:31:58,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 05:31:58,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759047113] [2020-10-13 05:31:58,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 05:31:58,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:31:58,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 05:31:58,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 05:31:58,543 INFO L87 Difference]: Start difference. First operand 129 states and 170 transitions. Second operand 12 states. [2020-10-13 05:31:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:31:58,808 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2020-10-13 05:31:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 05:31:58,809 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-13 05:31:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:31:58,811 INFO L225 Difference]: With dead ends: 303 [2020-10-13 05:31:58,811 INFO L226 Difference]: Without dead ends: 210 [2020-10-13 05:31:58,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:31:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-13 05:31:58,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 134. [2020-10-13 05:31:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-13 05:31:58,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2020-10-13 05:31:58,828 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 81 [2020-10-13 05:31:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:31:58,829 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2020-10-13 05:31:58,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 05:31:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2020-10-13 05:31:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 05:31:58,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:31:58,830 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:31:58,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 05:31:58,831 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:31:58,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:31:58,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1033091944, now seen corresponding path program 6 times [2020-10-13 05:31:58,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:31:58,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869514419] [2020-10-13 05:31:58,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:31:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:31:58,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:31:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:01,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:01,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 05:32:01,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:01,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2933 [2020-10-13 05:32:01,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:01,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:32:01,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:01,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 05:32:01,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:01,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:01,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:01,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:01,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:01,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:01,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:01,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:01,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:01,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:01,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:01,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:01,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:01,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:01,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:01,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:01,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 05:32:01,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:01,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 05:32:01,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:32:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:01,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 05:32:01,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:02,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 05:32:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:02,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:02,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:02,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:02,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:02,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:32:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:02,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:02,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:02,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:02,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:02,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:02,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:02,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:32:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:02,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:02,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:02,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:02,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:02,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:02,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 4 proven. 117 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:02,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869514419] [2020-10-13 05:32:02,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:02,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:32:02,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347791129] [2020-10-13 05:32:02,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:32:02,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:02,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:32:02,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:32:02,085 INFO L87 Difference]: Start difference. First operand 134 states and 177 transitions. Second operand 13 states. [2020-10-13 05:32:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:02,742 INFO L93 Difference]: Finished difference Result 293 states and 381 transitions. [2020-10-13 05:32:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 05:32:02,749 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-13 05:32:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:02,750 INFO L225 Difference]: With dead ends: 293 [2020-10-13 05:32:02,750 INFO L226 Difference]: Without dead ends: 192 [2020-10-13 05:32:02,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:32:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-13 05:32:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 136. [2020-10-13 05:32:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-13 05:32:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 175 transitions. [2020-10-13 05:32:02,764 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 175 transitions. Word has length 83 [2020-10-13 05:32:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:02,765 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 175 transitions. [2020-10-13 05:32:02,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:32:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 175 transitions. [2020-10-13 05:32:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 05:32:02,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:02,766 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:02,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 05:32:02,767 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:02,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:02,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1626667574, now seen corresponding path program 7 times [2020-10-13 05:32:02,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:02,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946226607] [2020-10-13 05:32:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:04,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:05,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:05,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 05:32:05,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2507 [2020-10-13 05:32:05,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:32:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 05:32:05,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:05,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:05,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:05,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:05,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:05,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:05,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:05,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:05,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:05,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:05,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:05,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:05,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:05,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:05,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:05,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:05,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:05,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:05,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 05:32:05,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:05,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 05:32:05,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:05,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:32:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 05:32:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:05,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 05:32:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:05,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:05,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:05,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:05,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:05,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:05,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 05:32:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:05,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:05,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:05,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:05,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:05,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:32:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:05,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:05,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:05,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:05,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 4 proven. 135 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:05,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946226607] [2020-10-13 05:32:05,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:05,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:32:05,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017140876] [2020-10-13 05:32:05,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:32:05,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:05,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:32:05,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=79, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:32:05,513 INFO L87 Difference]: Start difference. First operand 136 states and 175 transitions. Second operand 13 states. [2020-10-13 05:32:05,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:05,701 INFO L93 Difference]: Finished difference Result 284 states and 373 transitions. [2020-10-13 05:32:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 05:32:05,702 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-10-13 05:32:05,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:05,704 INFO L225 Difference]: With dead ends: 284 [2020-10-13 05:32:05,705 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 05:32:05,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=92, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:32:05,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 05:32:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 140. [2020-10-13 05:32:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 05:32:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 180 transitions. [2020-10-13 05:32:05,727 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 180 transitions. Word has length 84 [2020-10-13 05:32:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:05,728 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 180 transitions. [2020-10-13 05:32:05,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:32:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 180 transitions. [2020-10-13 05:32:05,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 05:32:05,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:05,730 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:05,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 05:32:05,731 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:05,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:05,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2114194665, now seen corresponding path program 7 times [2020-10-13 05:32:05,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:05,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781752336] [2020-10-13 05:32:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:05,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:09,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:09,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 05:32:09,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:09,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3452 [2020-10-13 05:32:09,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:32:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:09,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 05:32:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:09,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:09,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:09,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:09,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:09,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:09,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:09,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:09,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:09,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:09,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:09,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:09,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:09,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:09,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:09,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:09,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:09,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 05:32:09,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:09,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 05:32:09,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:32:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:09,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 05:32:09,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:09,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 05:32:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:09,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:09,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:09,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:09,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:09,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:09,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:09,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:09,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:32:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:09,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:09,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:09,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:09,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:09,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:09,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:09,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:09,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:09,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:09,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:32:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:09,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:09,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:09,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:09,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:09,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 4 proven. 144 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:09,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781752336] [2020-10-13 05:32:09,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:09,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 05:32:09,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702471230] [2020-10-13 05:32:09,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 05:32:09,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:09,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 05:32:09,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:32:09,536 INFO L87 Difference]: Start difference. First operand 140 states and 180 transitions. Second operand 14 states. [2020-10-13 05:32:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:10,345 INFO L93 Difference]: Finished difference Result 301 states and 388 transitions. [2020-10-13 05:32:10,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 05:32:10,345 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-13 05:32:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:10,348 INFO L225 Difference]: With dead ends: 301 [2020-10-13 05:32:10,348 INFO L226 Difference]: Without dead ends: 202 [2020-10-13 05:32:10,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:32:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-13 05:32:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 142. [2020-10-13 05:32:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-13 05:32:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 183 transitions. [2020-10-13 05:32:10,369 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 183 transitions. Word has length 86 [2020-10-13 05:32:10,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:10,370 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 183 transitions. [2020-10-13 05:32:10,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 05:32:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 183 transitions. [2020-10-13 05:32:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 05:32:10,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:10,372 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:10,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 05:32:10,372 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:10,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1449936793, now seen corresponding path program 8 times [2020-10-13 05:32:10,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:10,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261012761] [2020-10-13 05:32:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:10,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:10,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:10,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:11,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:13,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:13,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 05:32:13,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:13,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2732 [2020-10-13 05:32:13,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:32:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 05:32:13,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:13,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:13,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:13,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:13,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:13,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:13,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:13,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:13,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:13,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:13,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:13,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:13,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:13,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:13,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:13,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:13,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:13,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:13,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:13,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 05:32:13,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 05:32:13,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 05:32:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 05:32:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:13,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 05:32:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:13,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:13,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:13,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:13,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:13,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:13,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:13,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 05:32:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:13,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:13,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:13,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:13,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:13,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:13,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:13,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:32:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:13,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:13,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:13,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:13,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 4 proven. 164 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:13,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261012761] [2020-10-13 05:32:13,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:13,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 05:32:13,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713518914] [2020-10-13 05:32:13,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 05:32:13,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:13,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 05:32:13,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 05:32:13,368 INFO L87 Difference]: Start difference. First operand 142 states and 183 transitions. Second operand 14 states. [2020-10-13 05:32:13,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:13,640 INFO L93 Difference]: Finished difference Result 315 states and 406 transitions. [2020-10-13 05:32:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 05:32:13,641 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-10-13 05:32:13,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:13,642 INFO L225 Difference]: With dead ends: 315 [2020-10-13 05:32:13,642 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 05:32:13,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:32:13,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 05:32:13,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 146. [2020-10-13 05:32:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-13 05:32:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 188 transitions. [2020-10-13 05:32:13,658 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 188 transitions. Word has length 87 [2020-10-13 05:32:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:13,658 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 188 transitions. [2020-10-13 05:32:13,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 05:32:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 188 transitions. [2020-10-13 05:32:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 05:32:13,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:13,660 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:13,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 05:32:13,660 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:13,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:13,661 INFO L82 PathProgramCache]: Analyzing trace with hash -501475592, now seen corresponding path program 8 times [2020-10-13 05:32:13,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:13,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784256570] [2020-10-13 05:32:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:13,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:15,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:17,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 05:32:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3727 [2020-10-13 05:32:17,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:32:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:17,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 05:32:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:17,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:17,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:17,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:17,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:17,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:17,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:17,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:17,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:17,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:17,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:17,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:17,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:17,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:17,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:17,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:17,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:17,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:17,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:17,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 05:32:17,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:17,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 05:32:17,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:17,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:32:17,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:17,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 05:32:17,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:17,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 05:32:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:17,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:17,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:17,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:17,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:17,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:17,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:32:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:17,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:17,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:17,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:17,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:17,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:17,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 05:32:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:17,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:17,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:17,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:17,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:17,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:17,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 174 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:17,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784256570] [2020-10-13 05:32:17,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:17,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 05:32:17,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360362168] [2020-10-13 05:32:17,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 05:32:17,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:17,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 05:32:17,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:32:17,786 INFO L87 Difference]: Start difference. First operand 146 states and 188 transitions. Second operand 15 states. [2020-10-13 05:32:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:18,879 INFO L93 Difference]: Finished difference Result 314 states and 405 transitions. [2020-10-13 05:32:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 05:32:18,880 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2020-10-13 05:32:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:18,881 INFO L225 Difference]: With dead ends: 314 [2020-10-13 05:32:18,882 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 05:32:18,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:32:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 05:32:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 148. [2020-10-13 05:32:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-13 05:32:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 191 transitions. [2020-10-13 05:32:18,897 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 191 transitions. Word has length 89 [2020-10-13 05:32:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:18,897 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 191 transitions. [2020-10-13 05:32:18,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 05:32:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 191 transitions. [2020-10-13 05:32:18,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 05:32:18,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:18,898 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:18,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 05:32:18,899 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:18,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:18,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1968537450, now seen corresponding path program 9 times [2020-10-13 05:32:18,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:18,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348658600] [2020-10-13 05:32:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:18,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:18,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:22,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:22,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 05:32:22,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3112 [2020-10-13 05:32:22,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:32:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 05:32:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:22,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:22,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:22,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:22,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:22,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:22,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:22,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:22,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:22,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:22,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:22,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:22,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:22,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:22,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:22,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:22,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:22,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 05:32:22,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 05:32:22,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 05:32:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 05:32:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:22,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 05:32:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:22,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:22,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:22,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:22,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:22,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:22,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 05:32:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:22,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:22,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:22,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:22,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:22,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:22,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:22,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 05:32:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:22,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:22,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:22,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:22,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:22,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:22,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:22,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 196 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:22,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348658600] [2020-10-13 05:32:22,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:22,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 05:32:22,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692338213] [2020-10-13 05:32:22,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 05:32:22,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:22,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 05:32:22,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 05:32:22,319 INFO L87 Difference]: Start difference. First operand 148 states and 191 transitions. Second operand 15 states. [2020-10-13 05:32:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:22,703 INFO L93 Difference]: Finished difference Result 331 states and 427 transitions. [2020-10-13 05:32:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 05:32:22,703 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-10-13 05:32:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:22,705 INFO L225 Difference]: With dead ends: 331 [2020-10-13 05:32:22,705 INFO L226 Difference]: Without dead ends: 229 [2020-10-13 05:32:22,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 05:32:22,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-13 05:32:22,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 152. [2020-10-13 05:32:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 05:32:22,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 196 transitions. [2020-10-13 05:32:22,721 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 196 transitions. Word has length 90 [2020-10-13 05:32:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:22,721 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 196 transitions. [2020-10-13 05:32:22,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 05:32:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 196 transitions. [2020-10-13 05:32:22,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 05:32:22,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:22,723 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:22,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 05:32:22,723 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:22,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:22,724 INFO L82 PathProgramCache]: Analyzing trace with hash -342450551, now seen corresponding path program 9 times [2020-10-13 05:32:22,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:22,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839875784] [2020-10-13 05:32:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 05:32:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3925 [2020-10-13 05:32:26,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:32:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:26,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 05:32:26,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:26,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:26,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:26,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:26,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:26,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:26,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:26,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:26,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:26,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:26,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:26,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:26,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:26,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:26,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:26,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:26,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:26,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:26,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 05:32:26,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:26,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-13 05:32:26,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:26,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:32:26,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:26,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 05:32:26,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:27,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 05:32:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:27,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:27,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:27,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:27,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:27,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:27,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:27,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:27,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:32:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:27,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:27,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:27,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:27,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:27,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:27,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:32:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:27,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:27,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:27,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:27,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 207 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:27,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839875784] [2020-10-13 05:32:27,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:27,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:32:27,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393072008] [2020-10-13 05:32:27,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:32:27,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:27,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:32:27,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:32:27,144 INFO L87 Difference]: Start difference. First operand 152 states and 196 transitions. Second operand 16 states. [2020-10-13 05:32:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:27,707 INFO L93 Difference]: Finished difference Result 301 states and 391 transitions. [2020-10-13 05:32:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 05:32:27,709 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 92 [2020-10-13 05:32:27,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:27,711 INFO L225 Difference]: With dead ends: 301 [2020-10-13 05:32:27,711 INFO L226 Difference]: Without dead ends: 202 [2020-10-13 05:32:27,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:32:27,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-13 05:32:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 153. [2020-10-13 05:32:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 05:32:27,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2020-10-13 05:32:27,727 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 92 [2020-10-13 05:32:27,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:27,727 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2020-10-13 05:32:27,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:32:27,727 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2020-10-13 05:32:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 05:32:27,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:27,729 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:27,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 05:32:27,729 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:27,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:27,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1691620871, now seen corresponding path program 10 times [2020-10-13 05:32:27,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:27,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813512684] [2020-10-13 05:32:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:27,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:30,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:30,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 05:32:30,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3235 [2020-10-13 05:32:30,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:32:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 05:32:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:30,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:30,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:30,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:30,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:30,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:30,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:30,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:30,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:30,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:30,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:30,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:30,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:30,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:31,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:31,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 05:32:31,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:31,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 05:32:31,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 05:32:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 05:32:31,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:31,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 05:32:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:31,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:31,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:31,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:31,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:31,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:31,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:31,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:31,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:31,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 05:32:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:31,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:31,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:31,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:31,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:31,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:31,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:31,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:31,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:31,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:32:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:31,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:31,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:31,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:31,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:31,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:31,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 4 proven. 231 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:31,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813512684] [2020-10-13 05:32:31,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:31,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 05:32:31,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612455254] [2020-10-13 05:32:31,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 05:32:31,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:31,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 05:32:31,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=121, Unknown=0, NotChecked=0, Total=240 [2020-10-13 05:32:31,318 INFO L87 Difference]: Start difference. First operand 153 states and 198 transitions. Second operand 16 states. [2020-10-13 05:32:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:31,516 INFO L93 Difference]: Finished difference Result 327 states and 432 transitions. [2020-10-13 05:32:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 05:32:31,518 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 93 [2020-10-13 05:32:31,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:31,522 INFO L225 Difference]: With dead ends: 327 [2020-10-13 05:32:31,523 INFO L226 Difference]: Without dead ends: 222 [2020-10-13 05:32:31,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=137, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:32:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-13 05:32:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 158. [2020-10-13 05:32:31,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 05:32:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 205 transitions. [2020-10-13 05:32:31,541 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 205 transitions. Word has length 93 [2020-10-13 05:32:31,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:31,542 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 205 transitions. [2020-10-13 05:32:31,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 05:32:31,542 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 205 transitions. [2020-10-13 05:32:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 05:32:31,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:31,543 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:31,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 05:32:31,544 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:31,544 INFO L82 PathProgramCache]: Analyzing trace with hash -176381608, now seen corresponding path program 10 times [2020-10-13 05:32:31,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:31,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430471744] [2020-10-13 05:32:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:31,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:31,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:31,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:36,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:36,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 05:32:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4704 [2020-10-13 05:32:36,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:32:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 05:32:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:36,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:36,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:36,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:36,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:36,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:36,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:36,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:36,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:36,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:36,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:36,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:36,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:36,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:36,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:36,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:36,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:36,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 05:32:36,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 05:32:36,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:32:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:36,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 05:32:36,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 05:32:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:36,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:36,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:36,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:36,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:36,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:36,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:36,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:36,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:36,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 05:32:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:36,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:36,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:36,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:36,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:36,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:36,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:32:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:36,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:36,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:36,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:36,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:36,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:36,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:36,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:36,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 4 proven. 243 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:36,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430471744] [2020-10-13 05:32:36,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:36,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:32:36,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469101831] [2020-10-13 05:32:36,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:32:36,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:36,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:32:36,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:32:36,734 INFO L87 Difference]: Start difference. First operand 158 states and 205 transitions. Second operand 17 states. [2020-10-13 05:32:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:38,144 INFO L93 Difference]: Finished difference Result 341 states and 441 transitions. [2020-10-13 05:32:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 05:32:38,145 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 95 [2020-10-13 05:32:38,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:38,147 INFO L225 Difference]: With dead ends: 341 [2020-10-13 05:32:38,148 INFO L226 Difference]: Without dead ends: 232 [2020-10-13 05:32:38,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2020-10-13 05:32:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-13 05:32:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 160. [2020-10-13 05:32:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-13 05:32:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 207 transitions. [2020-10-13 05:32:38,167 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 207 transitions. Word has length 95 [2020-10-13 05:32:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:38,167 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 207 transitions. [2020-10-13 05:32:38,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:32:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 207 transitions. [2020-10-13 05:32:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 05:32:38,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:38,169 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:38,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 05:32:38,169 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash -838450934, now seen corresponding path program 11 times [2020-10-13 05:32:38,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:38,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707578698] [2020-10-13 05:32:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:38,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:38,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:38,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:41,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:41,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 05:32:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3639 [2020-10-13 05:32:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:32:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 05:32:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:41,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:41,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:41,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:41,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:41,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:41,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:41,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:41,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:41,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:41,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:41,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:41,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:41,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:41,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:41,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:41,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 05:32:41,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:41,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 05:32:41,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 05:32:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:41,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 05:32:41,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:42,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 05:32:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:42,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:42,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:42,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:42,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:42,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 05:32:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:42,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:42,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:42,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:42,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:42,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:42,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:42,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:42,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:42,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:32:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:42,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:42,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:42,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:42,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:42,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:42,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:42,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 269 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:42,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707578698] [2020-10-13 05:32:42,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:42,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 05:32:42,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227462833] [2020-10-13 05:32:42,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 05:32:42,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:42,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 05:32:42,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 05:32:42,181 INFO L87 Difference]: Start difference. First operand 160 states and 207 transitions. Second operand 17 states. [2020-10-13 05:32:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:42,669 INFO L93 Difference]: Finished difference Result 363 states and 469 transitions. [2020-10-13 05:32:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 05:32:42,670 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2020-10-13 05:32:42,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:42,673 INFO L225 Difference]: With dead ends: 363 [2020-10-13 05:32:42,673 INFO L226 Difference]: Without dead ends: 255 [2020-10-13 05:32:42,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 05:32:42,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-13 05:32:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 164. [2020-10-13 05:32:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-13 05:32:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 212 transitions. [2020-10-13 05:32:42,691 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 212 transitions. Word has length 96 [2020-10-13 05:32:42,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:42,691 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 212 transitions. [2020-10-13 05:32:42,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 05:32:42,691 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 212 transitions. [2020-10-13 05:32:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 05:32:42,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:42,693 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:42,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 05:32:42,693 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:42,693 INFO L82 PathProgramCache]: Analyzing trace with hash -618825687, now seen corresponding path program 11 times [2020-10-13 05:32:42,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:42,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079592462] [2020-10-13 05:32:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:42,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:47,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:47,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 05:32:47,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 05:32:47,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:32:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 05:32:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:47,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:47,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:47,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:47,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:47,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:47,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:47,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:47,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:47,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:47,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:47,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:47,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:47,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:47,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 05:32:47,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:47,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 05:32:47,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:47,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:32:47,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 05:32:47,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:48,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 05:32:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:48,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:48,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:48,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:48,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:48,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:48,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:48,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:48,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:48,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:32:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:48,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:48,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:48,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:48,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:48,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:48,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:48,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:48,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:48,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:48,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 05:32:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:48,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:48,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:48,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:48,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:48,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:48,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 4 proven. 282 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:48,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079592462] [2020-10-13 05:32:48,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:48,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 05:32:48,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004147112] [2020-10-13 05:32:48,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 05:32:48,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:48,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 05:32:48,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:32:48,279 INFO L87 Difference]: Start difference. First operand 164 states and 212 transitions. Second operand 18 states. [2020-10-13 05:32:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:49,694 INFO L93 Difference]: Finished difference Result 353 states and 456 transitions. [2020-10-13 05:32:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 05:32:49,695 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 98 [2020-10-13 05:32:49,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:49,698 INFO L225 Difference]: With dead ends: 353 [2020-10-13 05:32:49,698 INFO L226 Difference]: Without dead ends: 242 [2020-10-13 05:32:49,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 05:32:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-13 05:32:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 166. [2020-10-13 05:32:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-13 05:32:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2020-10-13 05:32:49,741 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 98 [2020-10-13 05:32:49,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:49,741 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2020-10-13 05:32:49,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 05:32:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2020-10-13 05:32:49,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 05:32:49,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:49,744 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:49,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 05:32:49,744 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:49,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1669315495, now seen corresponding path program 12 times [2020-10-13 05:32:49,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:49,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295977287] [2020-10-13 05:32:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:49,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:49,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:50,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 05:32:54,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:32:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4706 [2020-10-13 05:32:54,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:32:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:32:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 05:32:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:54,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:32:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:32:54,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:54,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:32:54,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:54,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:32:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:54,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:54,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:54,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:54,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:32:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:54,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:54,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:32:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:54,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 05:32:54,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 05:32:54,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 05:32:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:32:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 05:32:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 05:32:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:32:54,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:32:54,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:32:54,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:54,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:54,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 05:32:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:54,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:32:54,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:54,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:32:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:54,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 05:32:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:54,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:54,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:32:54,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:32:54,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:32:54,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:32:54,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:32:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:32:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:32:54,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:32:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:32:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 4 proven. 310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:32:54,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295977287] [2020-10-13 05:32:54,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:32:54,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 05:32:54,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702152577] [2020-10-13 05:32:54,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 05:32:54,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:32:54,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 05:32:54,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=154, Unknown=0, NotChecked=0, Total=306 [2020-10-13 05:32:54,890 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand 18 states. [2020-10-13 05:32:55,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:32:55,026 INFO L93 Difference]: Finished difference Result 349 states and 463 transitions. [2020-10-13 05:32:55,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 05:32:55,027 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 99 [2020-10-13 05:32:55,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:32:55,028 INFO L225 Difference]: With dead ends: 349 [2020-10-13 05:32:55,028 INFO L226 Difference]: Without dead ends: 238 [2020-10-13 05:32:55,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=172, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:32:55,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-13 05:32:55,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 170. [2020-10-13 05:32:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 05:32:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 220 transitions. [2020-10-13 05:32:55,047 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 220 transitions. Word has length 99 [2020-10-13 05:32:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:32:55,047 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 220 transitions. [2020-10-13 05:32:55,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 05:32:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 220 transitions. [2020-10-13 05:32:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 05:32:55,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:32:55,049 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:32:55,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 05:32:55,049 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:32:55,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:32:55,050 INFO L82 PathProgramCache]: Analyzing trace with hash -215751752, now seen corresponding path program 12 times [2020-10-13 05:32:55,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:32:55,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961353058] [2020-10-13 05:32:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:32:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:32:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:55,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:32:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:00,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:00,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 05:33:00,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:33:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 05:33:00,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:33:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 05:33:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:00,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:00,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:00,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:00,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:00,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:00,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:00,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:00,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:00,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:00,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:00,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 05:33:00,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 05:33:00,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:33:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:00,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 05:33:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 05:33:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:00,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:00,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:00,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:00,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:33:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:00,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:00,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:00,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:00,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 05:33:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:00,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:00,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:00,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:00,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 4 proven. 324 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:00,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961353058] [2020-10-13 05:33:00,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:00,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 05:33:00,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998060946] [2020-10-13 05:33:00,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 05:33:00,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:00,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 05:33:00,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:33:00,655 INFO L87 Difference]: Start difference. First operand 170 states and 220 transitions. Second operand 19 states. [2020-10-13 05:33:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:02,109 INFO L93 Difference]: Finished difference Result 366 states and 473 transitions. [2020-10-13 05:33:02,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-13 05:33:02,109 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 101 [2020-10-13 05:33:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:02,111 INFO L225 Difference]: With dead ends: 366 [2020-10-13 05:33:02,111 INFO L226 Difference]: Without dead ends: 252 [2020-10-13 05:33:02,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 05:33:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-13 05:33:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 172. [2020-10-13 05:33:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 05:33:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 223 transitions. [2020-10-13 05:33:02,130 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 223 transitions. Word has length 101 [2020-10-13 05:33:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:02,130 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 223 transitions. [2020-10-13 05:33:02,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 05:33:02,131 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 223 transitions. [2020-10-13 05:33:02,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 05:33:02,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:02,132 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:33:02,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 05:33:02,132 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:02,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:02,132 INFO L82 PathProgramCache]: Analyzing trace with hash -2058925398, now seen corresponding path program 13 times [2020-10-13 05:33:02,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:02,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406693672] [2020-10-13 05:33:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:02,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:04,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:06,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:06,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 05:33:06,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:33:06,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4488 [2020-10-13 05:33:06,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:33:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 05:33:06,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:06,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:06,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:06,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:06,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:06,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:06,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:06,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:06,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:06,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:06,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:06,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:06,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:06,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:06,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:06,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:06,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:06,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:06,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 05:33:06,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:06,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 05:33:06,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 05:33:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:06,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 05:33:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:07,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 05:33:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:07,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:07,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:07,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:07,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:07,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:07,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:07,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 05:33:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:07,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:07,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:07,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:07,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:07,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:07,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 05:33:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:07,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:07,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:07,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:07,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:07,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:33:07,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:07,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 4 proven. 354 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:07,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406693672] [2020-10-13 05:33:07,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:07,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 05:33:07,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936183426] [2020-10-13 05:33:07,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 05:33:07,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:07,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 05:33:07,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 05:33:07,083 INFO L87 Difference]: Start difference. First operand 172 states and 223 transitions. Second operand 19 states. [2020-10-13 05:33:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:07,615 INFO L93 Difference]: Finished difference Result 395 states and 511 transitions. [2020-10-13 05:33:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 05:33:07,616 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-13 05:33:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:07,618 INFO L225 Difference]: With dead ends: 395 [2020-10-13 05:33:07,618 INFO L226 Difference]: Without dead ends: 281 [2020-10-13 05:33:07,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 05:33:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-13 05:33:07,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 176. [2020-10-13 05:33:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-13 05:33:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 228 transitions. [2020-10-13 05:33:07,638 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 228 transitions. Word has length 102 [2020-10-13 05:33:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:07,638 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 228 transitions. [2020-10-13 05:33:07,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 05:33:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 228 transitions. [2020-10-13 05:33:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 05:33:07,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:07,640 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:33:07,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 05:33:07,640 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:07,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:07,640 INFO L82 PathProgramCache]: Analyzing trace with hash -968713783, now seen corresponding path program 13 times [2020-10-13 05:33:07,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:07,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294025519] [2020-10-13 05:33:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:07,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:07,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:12,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:12,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 05:33:12,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:33:12,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:33:12,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:33:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:12,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 05:33:12,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:12,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:12,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:12,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:12,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:12,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:12,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:12,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:12,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:12,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:12,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:12,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:12,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:12,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:12,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:12,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:12,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:12,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:12,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:12,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:12,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 05:33:12,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-13 05:33:12,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:33:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 05:33:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:13,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 05:33:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:13,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:13,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:13,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:13,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:13,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:13,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 05:33:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:13,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:13,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:13,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:13,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:13,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:13,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:13,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:13,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:13,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 05:33:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:13,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:13,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:13,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:13,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:13,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:13,356 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 4 proven. 369 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:13,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294025519] [2020-10-13 05:33:13,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:13,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:33:13,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322915383] [2020-10-13 05:33:13,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:33:13,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:13,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:33:13,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:33:13,357 INFO L87 Difference]: Start difference. First operand 176 states and 228 transitions. Second operand 20 states. [2020-10-13 05:33:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:15,343 INFO L93 Difference]: Finished difference Result 379 states and 490 transitions. [2020-10-13 05:33:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 05:33:15,345 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-10-13 05:33:15,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:15,347 INFO L225 Difference]: With dead ends: 379 [2020-10-13 05:33:15,348 INFO L226 Difference]: Without dead ends: 262 [2020-10-13 05:33:15,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 05:33:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-13 05:33:15,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 178. [2020-10-13 05:33:15,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 05:33:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 231 transitions. [2020-10-13 05:33:15,367 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 231 transitions. Word has length 104 [2020-10-13 05:33:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:15,368 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 231 transitions. [2020-10-13 05:33:15,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:33:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 231 transitions. [2020-10-13 05:33:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 05:33:15,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:15,369 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:33:15,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 05:33:15,370 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:15,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:15,370 INFO L82 PathProgramCache]: Analyzing trace with hash 369055417, now seen corresponding path program 14 times [2020-10-13 05:33:15,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:15,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558814554] [2020-10-13 05:33:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:15,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:15,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 05:33:20,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:33:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4798 [2020-10-13 05:33:20,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:33:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 05:33:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:20,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:20,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:20,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:20,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:20,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:20,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:20,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:20,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:20,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:20,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:20,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:20,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:20,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:20,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 05:33:20,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 05:33:20,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 05:33:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 05:33:20,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 05:33:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:20,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:20,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:20,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:20,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 05:33:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:20,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:20,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:20,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:33:20,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:20,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:33:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:20,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:20,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:20,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:20,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:20,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:33:20,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:20,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:20,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:20,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 4 proven. 401 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:20,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558814554] [2020-10-13 05:33:20,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:20,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 05:33:20,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573332136] [2020-10-13 05:33:20,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 05:33:20,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:20,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 05:33:20,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 05:33:20,756 INFO L87 Difference]: Start difference. First operand 178 states and 231 transitions. Second operand 20 states. [2020-10-13 05:33:21,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:21,481 INFO L93 Difference]: Finished difference Result 411 states and 532 transitions. [2020-10-13 05:33:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 05:33:21,487 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 105 [2020-10-13 05:33:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:21,489 INFO L225 Difference]: With dead ends: 411 [2020-10-13 05:33:21,490 INFO L226 Difference]: Without dead ends: 294 [2020-10-13 05:33:21,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 05:33:21,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-13 05:33:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 182. [2020-10-13 05:33:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-13 05:33:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 236 transitions. [2020-10-13 05:33:21,521 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 236 transitions. Word has length 105 [2020-10-13 05:33:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:21,521 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 236 transitions. [2020-10-13 05:33:21,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 05:33:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 236 transitions. [2020-10-13 05:33:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 05:33:21,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:21,524 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:33:21,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 05:33:21,524 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:21,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:21,524 INFO L82 PathProgramCache]: Analyzing trace with hash 153607704, now seen corresponding path program 14 times [2020-10-13 05:33:21,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:21,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592054375] [2020-10-13 05:33:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:26,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:26,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 05:33:26,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:33:26,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:33:26,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:33:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:26,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 05:33:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:26,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:26,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:26,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:26,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:26,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:26,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:26,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:26,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:26,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:26,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:26,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:26,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:26,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:26,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:26,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:26,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:26,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:26,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:26,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 05:33:26,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-13 05:33:26,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:33:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 05:33:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 05:33:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:27,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:27,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:27,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:27,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:27,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:33:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:27,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:27,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:27,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:27,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:27,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:27,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 05:33:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:27,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:27,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:27,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:27,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:27,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:27,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:27,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 4 proven. 417 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:27,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592054375] [2020-10-13 05:33:27,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:27,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 05:33:27,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757312498] [2020-10-13 05:33:27,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 05:33:27,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:27,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 05:33:27,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:33:27,390 INFO L87 Difference]: Start difference. First operand 182 states and 236 transitions. Second operand 21 states. [2020-10-13 05:33:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:28,379 INFO L93 Difference]: Finished difference Result 361 states and 471 transitions. [2020-10-13 05:33:28,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 05:33:28,380 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 107 [2020-10-13 05:33:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:28,382 INFO L225 Difference]: With dead ends: 361 [2020-10-13 05:33:28,382 INFO L226 Difference]: Without dead ends: 247 [2020-10-13 05:33:28,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:33:28,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-13 05:33:28,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 183. [2020-10-13 05:33:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-13 05:33:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 238 transitions. [2020-10-13 05:33:28,401 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 238 transitions. Word has length 107 [2020-10-13 05:33:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:28,402 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 238 transitions. [2020-10-13 05:33:28,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 05:33:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 238 transitions. [2020-10-13 05:33:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 05:33:28,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:28,403 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:33:28,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 05:33:28,404 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:28,404 INFO L82 PathProgramCache]: Analyzing trace with hash 801283146, now seen corresponding path program 15 times [2020-10-13 05:33:28,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:28,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312935232] [2020-10-13 05:33:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:28,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:28,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:31,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:33,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:33,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 05:33:33,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:33:33,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:33:33,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:33:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:33,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 05:33:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:33,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:33,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:33,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:33,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:33,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:33,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:33,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:33,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:33,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:33,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:33,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:33,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:33,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:33,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:33,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:33,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:33,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:33,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:33,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:33,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 05:33:33,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:33,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 05:33:33,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 05:33:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 05:33:33,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:33,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 05:33:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:33,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:33,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:33,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:33,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:33,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:33:33,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:33,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:33,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:33,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 05:33:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:33,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:33,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:33,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:33,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:33:33,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:33,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:33,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 05:33:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:33,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:33,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:33,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:33:33,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 4 proven. 451 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:33,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312935232] [2020-10-13 05:33:33,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:33,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 05:33:33,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739013180] [2020-10-13 05:33:33,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 05:33:33,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:33,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 05:33:33,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=211, Unknown=0, NotChecked=0, Total=420 [2020-10-13 05:33:33,984 INFO L87 Difference]: Start difference. First operand 183 states and 238 transitions. Second operand 21 states. [2020-10-13 05:33:34,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:34,365 INFO L93 Difference]: Finished difference Result 392 states and 522 transitions. [2020-10-13 05:33:34,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 05:33:34,366 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 108 [2020-10-13 05:33:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:34,368 INFO L225 Difference]: With dead ends: 392 [2020-10-13 05:33:34,369 INFO L226 Difference]: Without dead ends: 272 [2020-10-13 05:33:34,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=232, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:33:34,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-13 05:33:34,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 188. [2020-10-13 05:33:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-13 05:33:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 245 transitions. [2020-10-13 05:33:34,405 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 245 transitions. Word has length 108 [2020-10-13 05:33:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:34,408 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 245 transitions. [2020-10-13 05:33:34,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 05:33:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 245 transitions. [2020-10-13 05:33:34,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 05:33:34,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:34,411 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:33:34,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 05:33:34,412 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:34,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1087372439, now seen corresponding path program 15 times [2020-10-13 05:33:34,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:34,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862385652] [2020-10-13 05:33:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:39,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:39,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 05:33:39,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:33:39,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:33:39,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:33:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:39,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 05:33:39,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:39,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:39,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:39,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:39,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:39,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:39,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:39,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:39,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:39,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:39,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:39,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:39,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:39,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 05:33:39,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:39,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 05:33:39,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:33:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 05:33:39,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:40,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 05:33:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:40,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:40,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:40,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:40,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:40,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:40,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:40,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:33:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:40,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:40,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:40,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:33:40,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:40,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 05:33:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:40,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:40,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:40,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 05:33:40,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:33:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 4 proven. 468 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:40,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862385652] [2020-10-13 05:33:40,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:40,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:33:40,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240728570] [2020-10-13 05:33:40,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:33:40,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:40,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:33:40,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:33:40,432 INFO L87 Difference]: Start difference. First operand 188 states and 245 transitions. Second operand 22 states. [2020-10-13 05:33:43,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:43,043 INFO L93 Difference]: Finished difference Result 406 states and 526 transitions. [2020-10-13 05:33:43,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 05:33:43,043 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 110 [2020-10-13 05:33:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:43,046 INFO L225 Difference]: With dead ends: 406 [2020-10-13 05:33:43,046 INFO L226 Difference]: Without dead ends: 282 [2020-10-13 05:33:43,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 05:33:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-13 05:33:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 190. [2020-10-13 05:33:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-13 05:33:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2020-10-13 05:33:43,069 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 110 [2020-10-13 05:33:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:43,069 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2020-10-13 05:33:43,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:33:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2020-10-13 05:33:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 05:33:43,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:43,073 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:33:43,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 05:33:43,073 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:43,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:43,074 INFO L82 PathProgramCache]: Analyzing trace with hash 985604377, now seen corresponding path program 16 times [2020-10-13 05:33:43,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:43,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104649885] [2020-10-13 05:33:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:43,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:43,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:46,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:48,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:48,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 05:33:48,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:33:48,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:33:48,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:33:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:48,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 05:33:48,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:48,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:48,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:48,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:48,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:48,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:48,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:48,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:48,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:48,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:48,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:48,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-13 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 05:33:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 05:33:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:48,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:48,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:48,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 05:33:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:48,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:48,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:48,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:33:48,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:48,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:48,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 05:33:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:48,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:48,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:48,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:33:48,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:48,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:33:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 4 proven. 504 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:48,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104649885] [2020-10-13 05:33:48,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:48,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 05:33:48,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072664010] [2020-10-13 05:33:48,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 05:33:48,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:48,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 05:33:48,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=232, Unknown=0, NotChecked=0, Total=462 [2020-10-13 05:33:48,752 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand 22 states. [2020-10-13 05:33:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:49,160 INFO L93 Difference]: Finished difference Result 401 states and 535 transitions. [2020-10-13 05:33:49,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 05:33:49,162 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 111 [2020-10-13 05:33:49,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:49,164 INFO L225 Difference]: With dead ends: 401 [2020-10-13 05:33:49,164 INFO L226 Difference]: Without dead ends: 278 [2020-10-13 05:33:49,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=254, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:33:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-13 05:33:49,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 194. [2020-10-13 05:33:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 05:33:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 252 transitions. [2020-10-13 05:33:49,187 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 252 transitions. Word has length 111 [2020-10-13 05:33:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:49,187 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 252 transitions. [2020-10-13 05:33:49,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 05:33:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 252 transitions. [2020-10-13 05:33:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 05:33:49,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:49,189 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:33:49,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 05:33:49,189 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:49,190 INFO L82 PathProgramCache]: Analyzing trace with hash -48328584, now seen corresponding path program 16 times [2020-10-13 05:33:49,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:49,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359992924] [2020-10-13 05:33:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:49,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:54,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:54,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 05:33:54,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:33:54,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 05:33:54,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:54,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:33:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:33:54,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 05:33:54,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:54,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:33:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:54,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:54,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:54,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:33:54,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:33:54,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:54,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:54,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:33:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:54,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:54,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:54,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:54,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:54,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:33:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:54,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:33:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:54,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:54,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:54,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 05:33:54,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-13 05:33:54,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:33:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:33:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 05:33:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 05:33:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:55,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:55,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:33:55,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:55,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:55,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:55,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:33:55,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:55,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 05:33:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:55,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:55,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:33:55,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:55,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:55,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:33:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 05:33:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:55,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:55,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:33:55,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:33:55,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:33:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:33:55,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:33:55,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:33:55,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:33:55,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:33:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:33:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 4 proven. 522 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:33:55,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359992924] [2020-10-13 05:33:55,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:33:55,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 05:33:55,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114214939] [2020-10-13 05:33:55,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 05:33:55,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:33:55,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 05:33:55,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:33:55,213 INFO L87 Difference]: Start difference. First operand 194 states and 252 transitions. Second operand 23 states. [2020-10-13 05:33:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:33:58,017 INFO L93 Difference]: Finished difference Result 418 states and 541 transitions. [2020-10-13 05:33:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 05:33:58,018 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 113 [2020-10-13 05:33:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:33:58,020 INFO L225 Difference]: With dead ends: 418 [2020-10-13 05:33:58,020 INFO L226 Difference]: Without dead ends: 292 [2020-10-13 05:33:58,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 05:33:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-13 05:33:58,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 196. [2020-10-13 05:33:58,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 05:33:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 255 transitions. [2020-10-13 05:33:58,044 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 255 transitions. Word has length 113 [2020-10-13 05:33:58,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:33:58,045 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 255 transitions. [2020-10-13 05:33:58,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 05:33:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 255 transitions. [2020-10-13 05:33:58,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 05:33:58,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:33:58,046 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:33:58,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 05:33:58,047 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:33:58,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:33:58,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1163774486, now seen corresponding path program 17 times [2020-10-13 05:33:58,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:33:58,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317816446] [2020-10-13 05:33:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:33:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:33:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:33:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:03,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:03,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 05:34:03,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:34:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:34:03,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:34:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:34:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 05:34:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:03,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:34:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:03,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:03,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:03,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:34:03,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:03,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:03,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:03,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:34:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:03,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:03,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:03,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:03,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:03,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:03,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:03,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:03,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:34:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:03,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:03,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 05:34:03,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:03,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-13 05:34:03,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 05:34:03,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:34:03,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 05:34:03,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:03,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 05:34:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:03,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:03,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:03,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:03,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:34:03,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:03,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 05:34:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:03,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:03,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:03,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:03,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:03,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:34:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 05:34:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:03,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:03,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:34:03,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:34:03,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:34:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:03,812 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 4 proven. 560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:34:03,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317816446] [2020-10-13 05:34:03,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:34:03,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 05:34:03,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326000128] [2020-10-13 05:34:03,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 05:34:03,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:34:03,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 05:34:03,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 05:34:03,814 INFO L87 Difference]: Start difference. First operand 196 states and 255 transitions. Second operand 23 states. [2020-10-13 05:34:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:34:04,794 INFO L93 Difference]: Finished difference Result 459 states and 595 transitions. [2020-10-13 05:34:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 05:34:04,796 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 114 [2020-10-13 05:34:04,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:34:04,798 INFO L225 Difference]: With dead ends: 459 [2020-10-13 05:34:04,798 INFO L226 Difference]: Without dead ends: 333 [2020-10-13 05:34:04,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-13 05:34:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-13 05:34:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 200. [2020-10-13 05:34:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-13 05:34:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 260 transitions. [2020-10-13 05:34:04,823 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 260 transitions. Word has length 114 [2020-10-13 05:34:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:34:04,823 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 260 transitions. [2020-10-13 05:34:04,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 05:34:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 260 transitions. [2020-10-13 05:34:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 05:34:04,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:34:04,824 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:34:04,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 05:34:04,824 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:34:04,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:34:04,825 INFO L82 PathProgramCache]: Analyzing trace with hash 277853449, now seen corresponding path program 17 times [2020-10-13 05:34:04,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:34:04,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78712463] [2020-10-13 05:34:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:34:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:04,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:05,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:09,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:09,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 05:34:09,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:34:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 05:34:09,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:34:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:34:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 05:34:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:09,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:34:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:34:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:09,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:09,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:09,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:09,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:09,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:09,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:34:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:09,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:10,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:10,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 05:34:10,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-13 05:34:10,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:34:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:34:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 05:34:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 05:34:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:10,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:10,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:10,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:10,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:10,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:34:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:10,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:10,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 05:34:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:10,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:10,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:10,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:10,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:34:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:10,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 05:34:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:10,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:10,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:34:10,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:10,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:34:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 4 proven. 579 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:34:10,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78712463] [2020-10-13 05:34:10,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:34:10,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 05:34:10,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749954820] [2020-10-13 05:34:10,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 05:34:10,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:34:10,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 05:34:10,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:34:10,905 INFO L87 Difference]: Start difference. First operand 200 states and 260 transitions. Second operand 24 states. [2020-10-13 05:34:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:34:14,048 INFO L93 Difference]: Finished difference Result 431 states and 558 transitions. [2020-10-13 05:34:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-13 05:34:14,049 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 116 [2020-10-13 05:34:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:34:14,051 INFO L225 Difference]: With dead ends: 431 [2020-10-13 05:34:14,051 INFO L226 Difference]: Without dead ends: 302 [2020-10-13 05:34:14,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 05:34:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-13 05:34:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 202. [2020-10-13 05:34:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-13 05:34:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 263 transitions. [2020-10-13 05:34:14,076 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 263 transitions. Word has length 116 [2020-10-13 05:34:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:34:14,076 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 263 transitions. [2020-10-13 05:34:14,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 05:34:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 263 transitions. [2020-10-13 05:34:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 05:34:14,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:34:14,078 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:34:14,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 05:34:14,078 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:34:14,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:34:14,079 INFO L82 PathProgramCache]: Analyzing trace with hash 357933945, now seen corresponding path program 18 times [2020-10-13 05:34:14,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:34:14,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190922614] [2020-10-13 05:34:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:34:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:14,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:14,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:17,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:19,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:19,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 05:34:19,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:34:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 05:34:19,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:34:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:34:19,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 05:34:19,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:34:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:19,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:19,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:19,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:34:19,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:19,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:34:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:19,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:19,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:19,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:19,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:19,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:19,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:19,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:19,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:19,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:19,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:19,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:34:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:19,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:19,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 05:34:19,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-13 05:34:19,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 05:34:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:34:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 05:34:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:19,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 05:34:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:19,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:19,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:19,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:19,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:34:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:19,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 05:34:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:19,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:19,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:19,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:19,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:34:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:19,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 05:34:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:19,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:19,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:19,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:34:19,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:19,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:19,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:19,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:19,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:34:19,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:19,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 4 proven. 619 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:34:19,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190922614] [2020-10-13 05:34:19,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:34:19,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 05:34:19,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443013671] [2020-10-13 05:34:19,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 05:34:19,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:34:19,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 05:34:19,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 05:34:19,958 INFO L87 Difference]: Start difference. First operand 202 states and 263 transitions. Second operand 24 states. [2020-10-13 05:34:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:34:21,087 INFO L93 Difference]: Finished difference Result 475 states and 616 transitions. [2020-10-13 05:34:21,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 05:34:21,089 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 117 [2020-10-13 05:34:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:34:21,091 INFO L225 Difference]: With dead ends: 475 [2020-10-13 05:34:21,091 INFO L226 Difference]: Without dead ends: 346 [2020-10-13 05:34:21,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 05:34:21,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-13 05:34:21,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 206. [2020-10-13 05:34:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-13 05:34:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2020-10-13 05:34:21,112 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 117 [2020-10-13 05:34:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:34:21,113 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2020-10-13 05:34:21,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 05:34:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2020-10-13 05:34:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 05:34:21,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:34:21,114 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:34:21,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 05:34:21,115 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:34:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:34:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1944192296, now seen corresponding path program 18 times [2020-10-13 05:34:21,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:34:21,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096966992] [2020-10-13 05:34:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:34:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:21,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:21,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:26,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:26,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 05:34:26,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 05:34:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 05:34:26,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:34:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:34:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 05:34:26,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:34:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:26,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:26,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:26,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:34:26,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:26,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:26,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:26,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:26,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:26,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:34:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:26,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:26,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:26,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:26,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:26,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:26,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:26,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:26,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:26,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:26,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:26,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:34:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:26,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:26,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:26,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 05:34:26,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-13 05:34:26,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:34:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:34:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 05:34:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 05:34:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:27,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:27,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:27,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:34:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:27,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 05:34:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:27,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:27,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:27,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:27,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:27,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:34:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:27,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 05:34:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:27,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:27,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:27,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:34:27,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:27,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:27,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:34:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:27,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 4 proven. 639 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:34:27,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096966992] [2020-10-13 05:34:27,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:34:27,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 05:34:27,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066114788] [2020-10-13 05:34:27,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 05:34:27,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:34:27,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 05:34:27,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:34:27,451 INFO L87 Difference]: Start difference. First operand 206 states and 268 transitions. Second operand 25 states. [2020-10-13 05:34:30,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:34:30,599 INFO L93 Difference]: Finished difference Result 444 states and 575 transitions. [2020-10-13 05:34:30,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 05:34:30,600 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 119 [2020-10-13 05:34:30,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:34:30,602 INFO L225 Difference]: With dead ends: 444 [2020-10-13 05:34:30,602 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 05:34:30,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2020-10-13 05:34:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 05:34:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 208. [2020-10-13 05:34:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-13 05:34:30,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 271 transitions. [2020-10-13 05:34:30,627 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 271 transitions. Word has length 119 [2020-10-13 05:34:30,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:34:30,627 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 271 transitions. [2020-10-13 05:34:30,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 05:34:30,628 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 271 transitions. [2020-10-13 05:34:30,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 05:34:30,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:34:30,629 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:34:30,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 05:34:30,629 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:34:30,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:34:30,630 INFO L82 PathProgramCache]: Analyzing trace with hash 193992586, now seen corresponding path program 19 times [2020-10-13 05:34:30,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:34:30,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622126681] [2020-10-13 05:34:30,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:34:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:30,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:34,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:35,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:35,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 05:34:35,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 05:34:35,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 05:34:35,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:34:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 05:34:35,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 05:34:35,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:35,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:34:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:35,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:35,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:35,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:34:35,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:35,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 05:34:35,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:35,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:35,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:35,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:35,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:35,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 05:34:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:35,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:35,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:35,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:35,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:35,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:35,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:34:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:35,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 05:34:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:35,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:35,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:35,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 05:34:35,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-13 05:34:35,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 05:34:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 05:34:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 05:34:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:36,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 05:34:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:36,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:36,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 05:34:36,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:36,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 05:34:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:36,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 05:34:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:36,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:36,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:36,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 05:34:36,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:36,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:36,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:34:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:36,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 05:34:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:34:36,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:34:36,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:34:36,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 05:34:36,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:34:36,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:34:36,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:34:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:34:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 05:34:36,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:34:36,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:34:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 4 proven. 681 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 05:34:36,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622126681] [2020-10-13 05:34:36,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:34:36,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 05:34:36,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925068467] [2020-10-13 05:34:36,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 05:34:36,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:34:36,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 05:34:36,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 05:34:36,649 INFO L87 Difference]: Start difference. First operand 208 states and 271 transitions. Second operand 25 states.