/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/nr2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:05:05,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:05:05,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:05:05,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:05:05,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:05:05,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:05:05,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:05:05,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:05:05,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:05:05,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:05:05,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:05:05,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:05:05,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:05:05,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:05:05,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:05:05,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:05:05,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:05:05,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:05:05,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:05:05,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:05:05,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:05:05,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:05:05,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:05:05,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:05:05,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:05:05,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:05:05,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:05:05,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:05:05,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:05:05,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:05:05,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:05:05,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:05:05,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:05:05,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:05:05,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:05:05,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:05:05,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:05:05,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:05:05,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:05:05,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:05:05,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:05:05,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 00:05:05,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:05:05,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:05:05,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:05:05,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:05:05,771 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:05:05,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:05:05,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:05:05,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:05:05,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:05:05,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:05:05,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:05:05,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:05:05,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:05:05,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:05:05,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:05:05,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:05:05,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:05:05,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:05:05,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:05:05,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:05:05,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:05:05,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:05:05,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:05:05,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:05:05,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:05:05,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:05:05,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:05:05,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:05:05,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:05:05,777 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:05:06,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:05:06,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:05:06,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:05:06,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:05:06,119 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:05:06,120 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr2.c [2020-10-14 00:05:06,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3b3728d3/eafacd9daaf74ad5961c1190b492ff8f/FLAG52c05a4ad [2020-10-14 00:05:06,619 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:05:06,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/nr2.c [2020-10-14 00:05:06,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3b3728d3/eafacd9daaf74ad5961c1190b492ff8f/FLAG52c05a4ad [2020-10-14 00:05:07,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3b3728d3/eafacd9daaf74ad5961c1190b492ff8f [2020-10-14 00:05:07,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:05:07,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:05:07,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:05:07,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:05:07,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:05:07,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:05:07" (1/1) ... [2020-10-14 00:05:07,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693e2903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07, skipping insertion in model container [2020-10-14 00:05:07,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:05:07" (1/1) ... [2020-10-14 00:05:07,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:05:07,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:05:07,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:05:07,249 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:05:07,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:05:07,298 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:05:07,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07 WrapperNode [2020-10-14 00:05:07,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:05:07,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:05:07,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:05:07,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:05:07,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07" (1/1) ... [2020-10-14 00:05:07,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07" (1/1) ... [2020-10-14 00:05:07,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07" (1/1) ... [2020-10-14 00:05:07,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07" (1/1) ... [2020-10-14 00:05:07,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07" (1/1) ... [2020-10-14 00:05:07,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07" (1/1) ... [2020-10-14 00:05:07,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07" (1/1) ... [2020-10-14 00:05:07,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:05:07,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:05:07,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:05:07,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:05:07,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:05:07,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:05:07,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:05:07,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 00:05:07,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:05:07,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:05:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:05:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 00:05:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 00:05:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:05:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:05:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:05:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 00:05:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 00:05:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 00:05:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 00:05:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:05:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:05:07,880 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:05:07,880 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 00:05:07,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:05:07 BoogieIcfgContainer [2020-10-14 00:05:07,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:05:07,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:05:07,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:05:07,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:05:07,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:05:07" (1/3) ... [2020-10-14 00:05:07,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e9073f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:05:07, skipping insertion in model container [2020-10-14 00:05:07,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:05:07" (2/3) ... [2020-10-14 00:05:07,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e9073f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:05:07, skipping insertion in model container [2020-10-14 00:05:07,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:05:07" (3/3) ... [2020-10-14 00:05:07,894 INFO L109 eAbstractionObserver]: Analyzing ICFG nr2.c [2020-10-14 00:05:07,905 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:05:07,912 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:05:07,927 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:05:07,975 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:05:07,975 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:05:07,976 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:05:07,976 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:05:07,976 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:05:07,976 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:05:07,976 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:05:07,976 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:05:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-14 00:05:08,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 00:05:08,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:08,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:08,021 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:08,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1740462776, now seen corresponding path program 1 times [2020-10-14 00:05:08,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:08,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503219717] [2020-10-14 00:05:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:08,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:08,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 00:05:08,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:05:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-14 00:05:08,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:08,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 00:05:08,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:05:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:08,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:08,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:08,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:08,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:08,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:08,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:08,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:08,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:08,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:08,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:08,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:08,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:08,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:08,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:08,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:08,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:08,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 00:05:08,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:08,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:05:08,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503219717] [2020-10-14 00:05:08,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:05:08,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:05:08,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027401981] [2020-10-14 00:05:08,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:05:08,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:08,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:05:08,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:05:08,857 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-14 00:05:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:08,968 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2020-10-14 00:05:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:05:08,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-14 00:05:08,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:08,979 INFO L225 Difference]: With dead ends: 63 [2020-10-14 00:05:08,979 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 00:05:08,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:05:08,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 00:05:09,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-14 00:05:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 00:05:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-14 00:05:09,021 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-10-14 00:05:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:09,022 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-14 00:05:09,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:05:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-14 00:05:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 00:05:09,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:09,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:09,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:05:09,024 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:09,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1382737917, now seen corresponding path program 1 times [2020-10-14 00:05:09,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:09,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655293554] [2020-10-14 00:05:09,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:09,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 00:05:09,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:05:09,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 856 [2020-10-14 00:05:09,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:09,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:05:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:05:09,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:05:09,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:09,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:09,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:09,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:09,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:09,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:09,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:09,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:09,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:09,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:09,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:09,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:05:09,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:09,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:05:09,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655293554] [2020-10-14 00:05:09,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:05:09,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 00:05:09,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977787300] [2020-10-14 00:05:09,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:05:09,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:09,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:05:09,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:05:09,995 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-14 00:05:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:10,170 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-10-14 00:05:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:05:10,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-14 00:05:10,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:10,174 INFO L225 Difference]: With dead ends: 49 [2020-10-14 00:05:10,184 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 00:05:10,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:05:10,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 00:05:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-10-14 00:05:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 00:05:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-14 00:05:10,200 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 22 [2020-10-14 00:05:10,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:10,200 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-14 00:05:10,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:05:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-14 00:05:10,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 00:05:10,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:10,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:10,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:05:10,205 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash -114844664, now seen corresponding path program 1 times [2020-10-14 00:05:10,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:10,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613158565] [2020-10-14 00:05:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:10,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:05:10,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 00:05:10,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:10,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:05:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:05:10,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:10,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:10,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:10,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:10,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:10,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:10,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:10,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:10,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:10,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:10,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:10,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:10,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:10,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:10,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:05:10,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613158565] [2020-10-14 00:05:10,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:05:10,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:05:10,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378343893] [2020-10-14 00:05:10,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:05:10,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:10,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:05:10,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:05:10,385 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2020-10-14 00:05:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:10,468 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-14 00:05:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 00:05:10,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 00:05:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:10,470 INFO L225 Difference]: With dead ends: 52 [2020-10-14 00:05:10,470 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 00:05:10,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:05:10,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 00:05:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-14 00:05:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 00:05:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 00:05:10,480 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 25 [2020-10-14 00:05:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:10,480 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 00:05:10,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:05:10,481 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 00:05:10,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 00:05:10,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:10,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:10,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:05:10,482 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:10,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:10,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1281178762, now seen corresponding path program 1 times [2020-10-14 00:05:10,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:10,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771995266] [2020-10-14 00:05:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:10,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:10,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:11,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 00:05:11,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:05:11,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-14 00:05:11,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:11,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:05:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:05:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:11,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:11,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:11,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:11,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:11,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:11,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:11,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:11,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:11,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:11,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:11,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:11,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:05:11,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:11,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:11,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:11,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:05:11,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771995266] [2020-10-14 00:05:11,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:11,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:05:11,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013982094] [2020-10-14 00:05:11,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:05:11,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:11,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:05:11,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:05:11,144 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-10-14 00:05:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:11,260 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-14 00:05:11,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:05:11,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-14 00:05:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:11,262 INFO L225 Difference]: With dead ends: 54 [2020-10-14 00:05:11,262 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 00:05:11,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:05:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 00:05:11,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-14 00:05:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 00:05:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-14 00:05:11,270 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 28 [2020-10-14 00:05:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:11,271 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-14 00:05:11,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:05:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-14 00:05:11,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 00:05:11,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:11,272 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:05:11,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:05:11,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:11,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash -996702202, now seen corresponding path program 1 times [2020-10-14 00:05:11,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:11,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136466508] [2020-10-14 00:05:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:11,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:11,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 00:05:11,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:05:11,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-14 00:05:11,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:11,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:05:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 00:05:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:11,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:11,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:11,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:11,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:11,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:11,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:11,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:11,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:11,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:11,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:11,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:11,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:11,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:11,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:11,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:11,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 00:05:11,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136466508] [2020-10-14 00:05:11,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:05:11,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:05:11,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943523954] [2020-10-14 00:05:11,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:05:11,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:11,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:05:11,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:05:11,890 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 6 states. [2020-10-14 00:05:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:12,024 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-14 00:05:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:05:12,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-14 00:05:12,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:12,026 INFO L225 Difference]: With dead ends: 44 [2020-10-14 00:05:12,026 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 00:05:12,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:05:12,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 00:05:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 00:05:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 00:05:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-14 00:05:12,035 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 31 [2020-10-14 00:05:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:12,035 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-14 00:05:12,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:05:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-14 00:05:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 00:05:12,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:12,037 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:05:12,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:05:12,037 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:12,037 INFO L82 PathProgramCache]: Analyzing trace with hash -994855160, now seen corresponding path program 1 times [2020-10-14 00:05:12,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:12,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211140049] [2020-10-14 00:05:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 00:05:12,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:05:12,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-14 00:05:12,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:05:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 00:05:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:12,755 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-10-14 00:05:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:12,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:12,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:12,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:12,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:12,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:12,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:12,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:05:12,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:12,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:12,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:05:12,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211140049] [2020-10-14 00:05:12,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:12,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:05:12,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460186664] [2020-10-14 00:05:12,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:05:12,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:12,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:05:12,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:05:12,891 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 10 states. [2020-10-14 00:05:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:13,849 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2020-10-14 00:05:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:05:13,850 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-14 00:05:13,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:13,851 INFO L225 Difference]: With dead ends: 91 [2020-10-14 00:05:13,851 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 00:05:13,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:05:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 00:05:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 43. [2020-10-14 00:05:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 00:05:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-14 00:05:13,863 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 31 [2020-10-14 00:05:13,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:13,863 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-14 00:05:13,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:05:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-14 00:05:13,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 00:05:13,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:13,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:13,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:05:13,866 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:13,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:13,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1324006069, now seen corresponding path program 1 times [2020-10-14 00:05:13,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:13,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467304861] [2020-10-14 00:05:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:13,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:14,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:16,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 00:05:16,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:05:16,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2398 [2020-10-14 00:05:16,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:16,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 00:05:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:05:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:16,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:16,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:16,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:16,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:16,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:16,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:16,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:05:16,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:16,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:16,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:05:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:16,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:16,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:16,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:16,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:16,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:16,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:16,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:16,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:05:16,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467304861] [2020-10-14 00:05:16,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:16,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 00:05:16,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38727647] [2020-10-14 00:05:16,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 00:05:16,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:16,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 00:05:16,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:05:16,450 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 12 states. [2020-10-14 00:05:16,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:16,940 INFO L93 Difference]: Finished difference Result 89 states and 108 transitions. [2020-10-14 00:05:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 00:05:16,940 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-14 00:05:16,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:16,944 INFO L225 Difference]: With dead ends: 89 [2020-10-14 00:05:16,945 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 00:05:16,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:05:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 00:05:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 72. [2020-10-14 00:05:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 00:05:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-10-14 00:05:16,960 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 40 [2020-10-14 00:05:16,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:16,961 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-10-14 00:05:16,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 00:05:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-10-14 00:05:16,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 00:05:16,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:16,964 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:16,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:05:16,964 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:16,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1149798824, now seen corresponding path program 2 times [2020-10-14 00:05:16,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:16,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335421988] [2020-10-14 00:05:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:16,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:17,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:17,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:17,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:17,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:18,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:18,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:18,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:21,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:21,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 00:05:21,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 00:05:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:05:21,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:21,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:05:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 00:05:21,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:22,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:22,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:22,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:22,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:22,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:22,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:22,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:22,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:22,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:22,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:05:22,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:22,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:22,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:22,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:05:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:22,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:22,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:22,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:22,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:22,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:22,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:22,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:05:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:22,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:22,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:22,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:22,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:22,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:22,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:22,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:05:22,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335421988] [2020-10-14 00:05:22,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:22,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 00:05:22,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48817174] [2020-10-14 00:05:22,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 00:05:22,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 00:05:22,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:05:22,197 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 10 states. [2020-10-14 00:05:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:22,737 INFO L93 Difference]: Finished difference Result 134 states and 161 transitions. [2020-10-14 00:05:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:05:22,738 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-14 00:05:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:22,742 INFO L225 Difference]: With dead ends: 134 [2020-10-14 00:05:22,742 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 00:05:22,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:05:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 00:05:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 74. [2020-10-14 00:05:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 00:05:22,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-10-14 00:05:22,769 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 49 [2020-10-14 00:05:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:22,770 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-10-14 00:05:22,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 00:05:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-10-14 00:05:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 00:05:22,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:22,774 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:22,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:05:22,774 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:22,774 INFO L82 PathProgramCache]: Analyzing trace with hash -970143106, now seen corresponding path program 3 times [2020-10-14 00:05:22,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:22,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617666128] [2020-10-14 00:05:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:22,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:23,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:23,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:23,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:23,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:24,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:25,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:26,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:26,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:26,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:26,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:27,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:27,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 00:05:27,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-14 00:05:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 00:05:27,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:27,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:05:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:05:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:28,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:28,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:28,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:28,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:28,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:28,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:28,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:28,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:28,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:28,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:28,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:28,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:28,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:28,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:28,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:28,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:28,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:05:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:28,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:28,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:28,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:28,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:28,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:28,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:28,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:28,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:28,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:28,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:05:28,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617666128] [2020-10-14 00:05:28,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:28,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:05:28,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130139916] [2020-10-14 00:05:28,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:05:28,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:28,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:05:28,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:05:28,108 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 16 states. [2020-10-14 00:05:28,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:28,969 INFO L93 Difference]: Finished difference Result 172 states and 212 transitions. [2020-10-14 00:05:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 00:05:28,970 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-10-14 00:05:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:28,972 INFO L225 Difference]: With dead ends: 172 [2020-10-14 00:05:28,972 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 00:05:28,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:05:28,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 00:05:29,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 80. [2020-10-14 00:05:29,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 00:05:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2020-10-14 00:05:29,002 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 49 [2020-10-14 00:05:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:29,003 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2020-10-14 00:05:29,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:05:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2020-10-14 00:05:29,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 00:05:29,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:29,004 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:29,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:05:29,004 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:29,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:29,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1161099550, now seen corresponding path program 4 times [2020-10-14 00:05:29,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:29,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466515689] [2020-10-14 00:05:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:30,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:30,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:30,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:33,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:34,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:05:34,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 00:05:34,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:05:34,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:34,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:34,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:05:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:05:34,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-14 00:05:34,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:34,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:34,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:34,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:34,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:34,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:34,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:34,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:34,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:34,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:34,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:34,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:34,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 00:05:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:34,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:34,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:34,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:34,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:05:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 00:05:34,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466515689] [2020-10-14 00:05:34,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:34,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:05:34,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511702214] [2020-10-14 00:05:34,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:05:34,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:34,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:05:34,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:05:34,115 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand 6 states. [2020-10-14 00:05:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:34,214 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2020-10-14 00:05:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:05:34,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-14 00:05:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:34,216 INFO L225 Difference]: With dead ends: 126 [2020-10-14 00:05:34,216 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 00:05:34,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:05:34,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 00:05:34,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-10-14 00:05:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 00:05:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-10-14 00:05:34,228 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 52 [2020-10-14 00:05:34,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:34,228 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-10-14 00:05:34,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:05:34,228 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-10-14 00:05:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 00:05:34,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:34,229 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:34,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:05:34,230 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:34,230 INFO L82 PathProgramCache]: Analyzing trace with hash -221172737, now seen corresponding path program 5 times [2020-10-14 00:05:34,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:34,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157875554] [2020-10-14 00:05:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:35,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:35,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:37,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:39,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:39,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:05:39,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-10-14 00:05:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 00:05:39,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:39,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:05:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:05:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 00:05:39,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:39,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:39,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:39,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:39,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:39,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:39,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:39,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:39,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:39,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:39,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:39,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:39,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:05:39,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:39,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:39,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:39,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:39,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:39,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:39,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:05:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:39,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:39,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:39,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:39,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:39,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:39,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:39,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:39,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:39,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:05:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:39,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:39,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:39,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:39,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:39,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:39,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:39,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:39,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:39,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:39,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:05:39,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157875554] [2020-10-14 00:05:39,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:39,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:05:39,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358211786] [2020-10-14 00:05:39,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:05:39,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:39,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:05:39,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:05:39,479 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 13 states. [2020-10-14 00:05:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:40,281 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-10-14 00:05:40,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:05:40,282 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-14 00:05:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:40,283 INFO L225 Difference]: With dead ends: 99 [2020-10-14 00:05:40,283 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 00:05:40,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2020-10-14 00:05:40,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 00:05:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2020-10-14 00:05:40,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 00:05:40,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-14 00:05:40,296 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 58 [2020-10-14 00:05:40,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:40,297 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-14 00:05:40,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:05:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-14 00:05:40,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 00:05:40,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:40,298 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:40,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:05:40,298 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:40,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1416893538, now seen corresponding path program 6 times [2020-10-14 00:05:40,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:40,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523473529] [2020-10-14 00:05:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:40,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:41,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:42,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:42,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:45,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:45,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 00:05:45,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-14 00:05:45,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 00:05:45,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:45,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 00:05:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:05:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 00:05:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:45,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:45,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:45,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:45,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:45,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:45,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:45,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:45,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:45,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:45,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:45,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:45,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:45,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:45,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:45,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:05:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:45,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:45,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:45,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:45,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:45,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:45,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:45,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:45,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:05:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:45,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:45,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:45,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:45,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:45,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:45,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:45,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:05:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:45,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:45,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:45,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:45,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:45,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:45,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:45,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:45,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 00:05:45,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523473529] [2020-10-14 00:05:45,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:45,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 00:05:45,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577562528] [2020-10-14 00:05:45,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 00:05:45,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:45,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 00:05:45,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 00:05:45,551 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 15 states. [2020-10-14 00:05:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:46,510 INFO L93 Difference]: Finished difference Result 143 states and 170 transitions. [2020-10-14 00:05:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 00:05:46,512 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-14 00:05:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:46,513 INFO L225 Difference]: With dead ends: 143 [2020-10-14 00:05:46,514 INFO L226 Difference]: Without dead ends: 141 [2020-10-14 00:05:46,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 00:05:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-14 00:05:46,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 102. [2020-10-14 00:05:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 00:05:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 120 transitions. [2020-10-14 00:05:46,533 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 120 transitions. Word has length 67 [2020-10-14 00:05:46,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:46,534 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 120 transitions. [2020-10-14 00:05:46,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 00:05:46,534 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 120 transitions. [2020-10-14 00:05:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 00:05:46,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:46,535 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:46,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:05:46,535 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:46,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1458221345, now seen corresponding path program 7 times [2020-10-14 00:05:46,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:46,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573737487] [2020-10-14 00:05:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:46,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:47,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:47,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:47,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:48,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:50,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:51,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 00:05:51,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 43 [2020-10-14 00:05:51,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 00:05:51,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:51,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 00:05:51,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:05:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:05:51,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:51,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:51,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:51,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:51,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:51,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:51,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:51,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:51,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:51,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:05:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:05:51,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:51,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:51,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:51,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 00:05:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:51,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:51,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:51,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:51,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:51,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:51,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:51,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:51,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:05:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:51,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:51,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:51,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:51,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:51,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:51,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:51,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:51,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:51,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:05:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:51,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:51,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:51,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:51,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:51,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:51,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:51,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:51,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:51,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:51,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:05:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:51,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:51,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:51,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:51,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:51,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:51,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:51,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:51,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 00:05:51,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573737487] [2020-10-14 00:05:51,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:51,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:05:51,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678783247] [2020-10-14 00:05:51,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:05:51,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:51,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:05:51,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:05:51,879 INFO L87 Difference]: Start difference. First operand 102 states and 120 transitions. Second operand 13 states. [2020-10-14 00:05:52,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:52,463 INFO L93 Difference]: Finished difference Result 178 states and 208 transitions. [2020-10-14 00:05:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 00:05:52,464 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-10-14 00:05:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:52,465 INFO L225 Difference]: With dead ends: 178 [2020-10-14 00:05:52,465 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 00:05:52,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:05:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 00:05:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2020-10-14 00:05:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 00:05:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2020-10-14 00:05:52,486 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 76 [2020-10-14 00:05:52,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:52,486 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2020-10-14 00:05:52,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:05:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2020-10-14 00:05:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 00:05:52,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:52,488 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:52,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:05:52,488 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:52,489 INFO L82 PathProgramCache]: Analyzing trace with hash 244794933, now seen corresponding path program 8 times [2020-10-14 00:05:52,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:52,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361309658] [2020-10-14 00:05:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:52,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:54,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:54,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:55,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:57,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:57,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 00:05:57,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-14 00:05:57,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 00:05:57,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:57,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:57,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:05:57,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:05:57,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 00:05:57,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:05:57,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:05:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:57,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:57,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:05:57,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:57,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:57,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:57,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:57,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:57,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:05:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:57,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:57,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:57,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:57,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:05:57,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:57,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:05:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:05:57,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:05:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:57,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:57,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:57,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:57,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:57,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:57,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:57,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:57,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:57,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:57,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:05:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:57,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:57,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:05:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:57,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:05:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:57,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:57,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:05:57,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:05:57,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:05:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:05:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:05:57,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:05:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:05:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:05:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:05:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:05:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 91 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 00:05:57,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361309658] [2020-10-14 00:05:57,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:05:57,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:05:57,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69678649] [2020-10-14 00:05:57,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:05:57,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:05:57,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:05:57,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:05:57,985 INFO L87 Difference]: Start difference. First operand 109 states and 128 transitions. Second operand 16 states. [2020-10-14 00:05:59,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:05:59,618 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2020-10-14 00:05:59,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:05:59,618 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-10-14 00:05:59,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:05:59,620 INFO L225 Difference]: With dead ends: 138 [2020-10-14 00:05:59,620 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 00:05:59,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 00:05:59,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 00:05:59,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 86. [2020-10-14 00:05:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 00:05:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-10-14 00:05:59,638 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 76 [2020-10-14 00:05:59,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:05:59,639 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-10-14 00:05:59,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:05:59,639 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-10-14 00:05:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 00:05:59,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:05:59,640 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:05:59,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:05:59,641 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:05:59,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:05:59,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611688, now seen corresponding path program 9 times [2020-10-14 00:05:59,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:05:59,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706483317] [2020-10-14 00:05:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:05:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:05:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:59,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:59,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:05:59,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:00,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:01,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:01,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:02,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:02,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:02,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:02,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:04,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:04,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 00:06:04,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 47 [2020-10-14 00:06:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 00:06:04,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:04,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 00:06:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:06:04,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:06:04,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:05,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:05,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:05,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:05,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:05,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:05,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:05,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:05,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:05,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:05,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:05,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:06:05,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:05,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:05,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:05,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:05,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:05,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:05,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:05,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:05,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:05,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:05,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:06:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:05,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:05,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:05,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:05,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:05,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:05,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:05,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:05,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:05,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:06:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:05,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:05,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:05,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:05,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:05,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:05,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:05,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:05,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:06:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:05,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:05,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:05,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:05,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:05,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:05,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:05,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:05,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:05,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:05,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:05,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:05,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:05,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:05,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:05,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:05,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:05,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:05,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 30 proven. 88 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 00:06:05,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706483317] [2020-10-14 00:06:05,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:05,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 00:06:05,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794109774] [2020-10-14 00:06:05,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 00:06:05,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:05,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 00:06:05,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-14 00:06:05,136 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 17 states. [2020-10-14 00:06:05,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:05,923 INFO L93 Difference]: Finished difference Result 161 states and 185 transitions. [2020-10-14 00:06:05,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 00:06:05,924 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2020-10-14 00:06:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:05,925 INFO L225 Difference]: With dead ends: 161 [2020-10-14 00:06:05,925 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 00:06:05,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:06:05,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 00:06:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2020-10-14 00:06:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 00:06:05,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-10-14 00:06:05,954 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 85 [2020-10-14 00:06:05,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:05,954 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-10-14 00:06:05,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 00:06:05,954 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-10-14 00:06:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 00:06:05,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:05,956 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:05,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:06:05,957 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:05,957 INFO L82 PathProgramCache]: Analyzing trace with hash 792494438, now seen corresponding path program 10 times [2020-10-14 00:06:05,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:05,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669205786] [2020-10-14 00:06:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:05,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:06,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:09,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:09,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:09,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:09,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:10,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:10,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:10,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:10,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:10,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:10,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 00:06:10,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-10-14 00:06:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 00:06:10,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:10,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:06:10,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:06:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 00:06:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:11,219 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-14 00:06:11,346 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-14 00:06:11,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:11,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:11,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:11,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:11,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:11,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:11,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:11,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:11,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:11,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:11,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:11,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:11,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:11,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:11,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:06:11,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:11,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:11,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:11,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:11,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:06:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:11,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:11,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:11,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:11,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:11,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:11,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:11,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:11,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:11,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:11,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:06:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:11,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:11,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:11,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:11,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:11,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:11,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:11,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:06:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:06:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:11,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:11,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:06:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:11,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:11,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:11,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:11,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:11,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:11,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:11,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:11,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:11,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:11,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:11,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:11,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:11,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:11,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:11,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:11,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:11,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 37 proven. 79 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-14 00:06:11,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669205786] [2020-10-14 00:06:11,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:11,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:06:11,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993697637] [2020-10-14 00:06:11,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:06:11,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:11,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:06:11,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:06:11,814 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 18 states. [2020-10-14 00:06:12,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:12,844 INFO L93 Difference]: Finished difference Result 122 states and 134 transitions. [2020-10-14 00:06:12,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:06:12,844 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-10-14 00:06:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:12,845 INFO L225 Difference]: With dead ends: 122 [2020-10-14 00:06:12,845 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 00:06:12,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2020-10-14 00:06:12,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 00:06:12,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2020-10-14 00:06:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 00:06:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2020-10-14 00:06:12,861 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 85 [2020-10-14 00:06:12,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:12,862 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2020-10-14 00:06:12,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:06:12,862 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2020-10-14 00:06:12,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 00:06:12,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:12,863 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:12,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:06:12,863 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:12,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:12,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1067254052, now seen corresponding path program 11 times [2020-10-14 00:06:12,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:12,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75319108] [2020-10-14 00:06:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:12,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:13,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:14,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:15,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:15,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:15,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:17,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:17,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:17,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 00:06:17,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-14 00:06:17,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:06:17,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:17,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:06:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:06:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 00:06:17,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:18,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:18,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:18,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:18,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:18,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:18,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:18,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:18,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:18,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:18,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:06:18,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:18,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:18,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:18,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:06:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:18,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:18,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:18,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:18,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:18,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:18,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:06:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:06:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:18,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:18,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:18,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:18,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:18,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:06:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:18,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:18,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:18,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:18,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:18,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:18,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:18,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:18,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:18,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:18,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:06:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:18,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 12 proven. 103 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 00:06:18,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75319108] [2020-10-14 00:06:18,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:18,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:06:18,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662308715] [2020-10-14 00:06:18,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:06:18,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:18,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:06:18,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:06:18,255 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand 16 states. [2020-10-14 00:06:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:19,527 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2020-10-14 00:06:19,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 00:06:19,528 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 85 [2020-10-14 00:06:19,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:19,530 INFO L225 Difference]: With dead ends: 127 [2020-10-14 00:06:19,530 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 00:06:19,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=1089, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 00:06:19,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 00:06:19,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 89. [2020-10-14 00:06:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 00:06:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-10-14 00:06:19,552 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 85 [2020-10-14 00:06:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:19,553 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-10-14 00:06:19,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:06:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-10-14 00:06:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 00:06:19,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:19,554 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:19,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:06:19,554 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:19,555 INFO L82 PathProgramCache]: Analyzing trace with hash -52621287, now seen corresponding path program 12 times [2020-10-14 00:06:19,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:19,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847547097] [2020-10-14 00:06:19,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:19,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:19,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:19,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:19,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:19,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:24,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:24,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 00:06:24,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:06:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:06:24,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:24,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:06:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:06:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 00:06:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:24,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:24,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:24,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:24,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:24,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:24,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:24,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:24,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:24,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:24,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:24,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:24,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:24,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:24,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:24,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:24,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:06:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:24,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:24,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:24,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:24,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:24,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:24,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:24,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:06:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:24,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:24,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:24,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:24,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:24,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:24,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:24,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:24,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:24,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:06:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:24,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:24,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:24,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:24,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:24,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:24,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:24,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:24,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:24,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:24,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:24,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:24,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:24,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:24,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:24,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:24,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:24,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:24,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:06:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:24,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:24,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:24,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:24,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:24,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 10 proven. 129 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 00:06:24,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847547097] [2020-10-14 00:06:24,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:24,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:06:24,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063322050] [2020-10-14 00:06:24,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:06:24,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:24,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:06:24,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:06:24,844 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 18 states. [2020-10-14 00:06:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:25,943 INFO L93 Difference]: Finished difference Result 155 states and 178 transitions. [2020-10-14 00:06:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 00:06:25,944 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2020-10-14 00:06:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:25,946 INFO L225 Difference]: With dead ends: 155 [2020-10-14 00:06:25,946 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 00:06:25,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 00:06:25,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 00:06:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 133. [2020-10-14 00:06:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 00:06:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 151 transitions. [2020-10-14 00:06:25,973 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 151 transitions. Word has length 94 [2020-10-14 00:06:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:25,973 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 151 transitions. [2020-10-14 00:06:25,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:06:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 151 transitions. [2020-10-14 00:06:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 00:06:25,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:25,975 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:25,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:06:25,975 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:25,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:25,976 INFO L82 PathProgramCache]: Analyzing trace with hash -166329148, now seen corresponding path program 13 times [2020-10-14 00:06:25,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:25,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038374300] [2020-10-14 00:06:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:26,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:27,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:27,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:30,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:30,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:30,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:30,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 00:06:31,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-14 00:06:31,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:06:31,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 00:06:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:06:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 00:06:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:31,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:31,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:06:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:31,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:06:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:06:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:06:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:06:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:31,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:31,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:31,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:31,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:31,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:31,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:31,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:06:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 00:06:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:31,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 55 proven. 129 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-14 00:06:31,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038374300] [2020-10-14 00:06:31,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:31,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 00:06:31,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248787147] [2020-10-14 00:06:31,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 00:06:31,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:31,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 00:06:31,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 00:06:31,336 INFO L87 Difference]: Start difference. First operand 133 states and 151 transitions. Second operand 18 states. [2020-10-14 00:06:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:32,501 INFO L93 Difference]: Finished difference Result 186 states and 215 transitions. [2020-10-14 00:06:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 00:06:32,502 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 103 [2020-10-14 00:06:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:32,503 INFO L225 Difference]: With dead ends: 186 [2020-10-14 00:06:32,503 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 00:06:32,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2020-10-14 00:06:32,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 00:06:32,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 133. [2020-10-14 00:06:32,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 00:06:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2020-10-14 00:06:32,526 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 103 [2020-10-14 00:06:32,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:32,526 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2020-10-14 00:06:32,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 00:06:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2020-10-14 00:06:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 00:06:32,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:32,528 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:32,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:06:32,528 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:32,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:32,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1177446398, now seen corresponding path program 14 times [2020-10-14 00:06:32,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:32,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082049791] [2020-10-14 00:06:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:32,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:32,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 00:06:33,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:33,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-14 00:06:33,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 00:06:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:06:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 00:06:33,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:33,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:33,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:33,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:33,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:33,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:06:33,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:06:33,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:33,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 00:06:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:33,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:33,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:06:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:33,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:33,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:33,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:33,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:33,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:33,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:06:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:33,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:33,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:33,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:33,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:33,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:06:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:33,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:06:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:33,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:33,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:33,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:33,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:33,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:33,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:33,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:33,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 63 proven. 102 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 00:06:33,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082049791] [2020-10-14 00:06:33,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:33,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 00:06:33,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547109713] [2020-10-14 00:06:33,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 00:06:33,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:33,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 00:06:33,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-14 00:06:33,599 INFO L87 Difference]: Start difference. First operand 133 states and 150 transitions. Second operand 16 states. [2020-10-14 00:06:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:34,669 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2020-10-14 00:06:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 00:06:34,670 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 103 [2020-10-14 00:06:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:34,672 INFO L225 Difference]: With dead ends: 218 [2020-10-14 00:06:34,672 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 00:06:34,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2020-10-14 00:06:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 00:06:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2020-10-14 00:06:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 00:06:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2020-10-14 00:06:34,690 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 103 [2020-10-14 00:06:34,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:34,690 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2020-10-14 00:06:34,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 00:06:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2020-10-14 00:06:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 00:06:34,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:34,691 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:34,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:06:34,692 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:34,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1831547102, now seen corresponding path program 15 times [2020-10-14 00:06:34,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:34,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288722650] [2020-10-14 00:06:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:34,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:34,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:34,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:34,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:37,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:39,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:39,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 00:06:39,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-14 00:06:39,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:06:39,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:39,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:39,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 00:06:39,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:06:39,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 00:06:39,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:40,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:40,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:40,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:40,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:40,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:40,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:40,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:40,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:40,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:40,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:40,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:40,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:40,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:06:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:40,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:40,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:40,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:40,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:40,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:40,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:40,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:40,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:06:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:40,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:40,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:40,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:40,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:40,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:40,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:40,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:40,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:40,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:40,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:40,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:40,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:40,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:40,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:06:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:40,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:40,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:40,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:40,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:40,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:06:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:40,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:40,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:40,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:40,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 12 proven. 189 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-14 00:06:40,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288722650] [2020-10-14 00:06:40,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:40,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 00:06:40,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242015835] [2020-10-14 00:06:40,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 00:06:40,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:40,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 00:06:40,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2020-10-14 00:06:40,111 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand 21 states. [2020-10-14 00:06:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:42,198 INFO L93 Difference]: Finished difference Result 210 states and 244 transitions. [2020-10-14 00:06:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 00:06:42,198 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 103 [2020-10-14 00:06:42,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:42,201 INFO L225 Difference]: With dead ends: 210 [2020-10-14 00:06:42,201 INFO L226 Difference]: Without dead ends: 208 [2020-10-14 00:06:42,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=437, Invalid=2643, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 00:06:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-14 00:06:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 175. [2020-10-14 00:06:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 00:06:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2020-10-14 00:06:42,229 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 103 [2020-10-14 00:06:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:42,229 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2020-10-14 00:06:42,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 00:06:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2020-10-14 00:06:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 00:06:42,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:42,230 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:42,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:06:42,231 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:42,231 INFO L82 PathProgramCache]: Analyzing trace with hash -2013650981, now seen corresponding path program 16 times [2020-10-14 00:06:42,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:42,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743898587] [2020-10-14 00:06:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:42,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:42,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:43,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:46,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:47,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 00:06:47,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-14 00:06:47,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 00:06:47,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:47,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:06:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:06:47,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 00:06:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:06:47,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:47,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:47,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:47,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:47,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:47,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:47,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:47,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:47,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:47,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:47,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:47,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:47,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:47,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:47,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:47,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:06:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:47,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:47,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:47,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:47,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:47,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:47,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:47,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:06:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:47,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:47,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:47,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:47,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:47,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:47,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:47,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:47,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:47,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:47,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:47,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:47,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:06:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:47,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:47,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:47,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:47,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:06:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:47,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:47,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:47,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:47,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:06:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:47,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:47,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:47,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:06:47,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:47,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:06:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:47,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 46 proven. 184 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 00:06:47,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743898587] [2020-10-14 00:06:47,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:47,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:06:47,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650351652] [2020-10-14 00:06:47,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:06:47,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:47,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:06:47,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:06:47,721 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand 19 states. [2020-10-14 00:06:49,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:49,075 INFO L93 Difference]: Finished difference Result 224 states and 259 transitions. [2020-10-14 00:06:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 00:06:49,077 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 112 [2020-10-14 00:06:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:49,080 INFO L225 Difference]: With dead ends: 224 [2020-10-14 00:06:49,080 INFO L226 Difference]: Without dead ends: 208 [2020-10-14 00:06:49,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 00:06:49,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-14 00:06:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 152. [2020-10-14 00:06:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-14 00:06:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 173 transitions. [2020-10-14 00:06:49,108 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 173 transitions. Word has length 112 [2020-10-14 00:06:49,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:49,109 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 173 transitions. [2020-10-14 00:06:49,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:06:49,109 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 173 transitions. [2020-10-14 00:06:49,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 00:06:49,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:49,111 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:49,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 00:06:49,111 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:49,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:49,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1270199065, now seen corresponding path program 17 times [2020-10-14 00:06:49,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:49,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206108453] [2020-10-14 00:06:49,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:49,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:50,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:54,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:54,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 00:06:54,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 00:06:54,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:06:54,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:54,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:06:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:06:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 00:06:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:54,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:06:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:54,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:54,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:54,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:06:54,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:54,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:54,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:54,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:06:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:06:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:54,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:06:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:54,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:54,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:54,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:06:54,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:54,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:54,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:54,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:54,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:06:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:54,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:54,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:54,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:54,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:54,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:54,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:54,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:54,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:54,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:06:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:54,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:54,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:54,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:54,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:54,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:54,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:54,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:06:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:54,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:54,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:54,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:06:54,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:54,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:06:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:54,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:54,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:54,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:54,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:54,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:54,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:54,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:54,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:54,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:54,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:06:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:54,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:54,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:54,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:54,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:54,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:54,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:54,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:54,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:54,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:54,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:54,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:06:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:54,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:06:54,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:06:54,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:06:54,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:06:54,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:06:54,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:06:54,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:06:54,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:06:54,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:06:54,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:06:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 18 proven. 210 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 00:06:54,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206108453] [2020-10-14 00:06:54,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:06:54,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:06:54,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512781577] [2020-10-14 00:06:54,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:06:54,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:06:54,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:06:54,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:06:54,541 INFO L87 Difference]: Start difference. First operand 152 states and 173 transitions. Second operand 19 states. [2020-10-14 00:06:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:06:56,679 INFO L93 Difference]: Finished difference Result 216 states and 250 transitions. [2020-10-14 00:06:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 00:06:56,679 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 112 [2020-10-14 00:06:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:06:56,681 INFO L225 Difference]: With dead ends: 216 [2020-10-14 00:06:56,681 INFO L226 Difference]: Without dead ends: 200 [2020-10-14 00:06:56,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=247, Invalid=2009, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 00:06:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-14 00:06:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 157. [2020-10-14 00:06:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 00:06:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 179 transitions. [2020-10-14 00:06:56,706 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 179 transitions. Word has length 112 [2020-10-14 00:06:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:06:56,706 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 179 transitions. [2020-10-14 00:06:56,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:06:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 179 transitions. [2020-10-14 00:06:56,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 00:06:56,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:06:56,708 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:06:56,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 00:06:56,709 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:06:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:06:56,709 INFO L82 PathProgramCache]: Analyzing trace with hash 616098361, now seen corresponding path program 18 times [2020-10-14 00:06:56,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:06:56,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614159827] [2020-10-14 00:06:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:06:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:06:56,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:56,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:59,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:59,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:06:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:01,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:01,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 00:07:01,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 39 [2020-10-14 00:07:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:07:01,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:01,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:07:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:07:01,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 00:07:01,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:02,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:02,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:02,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:02,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:02,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:02,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:02,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:02,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:02,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:02,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:02,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:02,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:02,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:07:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:02,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:02,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:02,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:02,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:02,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:02,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:02,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:02,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:02,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:07:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:02,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:02,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:02,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:02,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:02,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:02,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:02,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:07:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:02,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:02,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:02,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:02,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:02,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:07:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:02,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:02,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:02,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:02,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:02,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:02,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:07:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:02,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:02,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:02,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:02,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:02,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 13 proven. 260 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-14 00:07:02,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614159827] [2020-10-14 00:07:02,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:02,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:07:02,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940199748] [2020-10-14 00:07:02,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:07:02,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:02,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:07:02,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:07:02,275 INFO L87 Difference]: Start difference. First operand 157 states and 179 transitions. Second operand 23 states. [2020-10-14 00:07:04,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:04,141 INFO L93 Difference]: Finished difference Result 278 states and 317 transitions. [2020-10-14 00:07:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 00:07:04,142 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 112 [2020-10-14 00:07:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:04,145 INFO L225 Difference]: With dead ends: 278 [2020-10-14 00:07:04,145 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 00:07:04,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=278, Invalid=1978, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 00:07:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 00:07:04,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 112. [2020-10-14 00:07:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 00:07:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 121 transitions. [2020-10-14 00:07:04,181 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 121 transitions. Word has length 112 [2020-10-14 00:07:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:04,182 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 121 transitions. [2020-10-14 00:07:04,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:07:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 121 transitions. [2020-10-14 00:07:04,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 00:07:04,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:04,184 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:04,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 00:07:04,184 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:04,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:04,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1656438332, now seen corresponding path program 19 times [2020-10-14 00:07:04,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:04,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116939277] [2020-10-14 00:07:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:04,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:04,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:05,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:05,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:06,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:09,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 00:07:09,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-14 00:07:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 00:07:09,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:09,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:07:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:07:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 00:07:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:09,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:09,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:09,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:09,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:09,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:09,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:09,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:09,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:09,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:09,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:09,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:07:09,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:09,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:09,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:09,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:09,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:09,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:09,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:07:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:09,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:09,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:09,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:09,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:09,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:09,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:09,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:09,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:07:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:09,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:09,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:09,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:09,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:09,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:09,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:07:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:09,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:09,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:09,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:09,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:09,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:09,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:09,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:09,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:07:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:09,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:09,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:09,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:09,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:09,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:09,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:09,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:09,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:07:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:09,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:09,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:09,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:09,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:09,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:09,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:09,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:09,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:07:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:09,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:09,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:09,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:09,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:09,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:09,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:07:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:09,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:09,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:09,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:09,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:09,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:09,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:09,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:09,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:09,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:09,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 14 proven. 249 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 00:07:09,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116939277] [2020-10-14 00:07:09,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:09,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:07:09,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899715826] [2020-10-14 00:07:09,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:07:09,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:09,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:07:09,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:07:09,819 INFO L87 Difference]: Start difference. First operand 112 states and 121 transitions. Second operand 22 states. [2020-10-14 00:07:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:11,708 INFO L93 Difference]: Finished difference Result 180 states and 203 transitions. [2020-10-14 00:07:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 00:07:11,709 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 121 [2020-10-14 00:07:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:11,710 INFO L225 Difference]: With dead ends: 180 [2020-10-14 00:07:11,710 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 00:07:11,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 00:07:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 00:07:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 164. [2020-10-14 00:07:11,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-14 00:07:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2020-10-14 00:07:11,737 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 121 [2020-10-14 00:07:11,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:11,737 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2020-10-14 00:07:11,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:07:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2020-10-14 00:07:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 00:07:11,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:11,739 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:11,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 00:07:11,739 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:11,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:11,740 INFO L82 PathProgramCache]: Analyzing trace with hash -841743495, now seen corresponding path program 20 times [2020-10-14 00:07:11,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:11,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988889704] [2020-10-14 00:07:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:12,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:14,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:16,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:16,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 00:07:16,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 00:07:16,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 00:07:16,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:16,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 00:07:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:07:16,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 00:07:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:17,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:17,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:17,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:17,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:17,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:17,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:07:17,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:07:17,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:17,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:17,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:07:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:17,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:17,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:07:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:17,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:17,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:17,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:17,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:07:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:17,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:17,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:17,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:07:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:17,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:17,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:07:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:17,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:17,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:17,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:17,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:17,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:17,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:07:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:17,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:17,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:17,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:17,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:07:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:17,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:17,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:17,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:17,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:17,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:07:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:17,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:17,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:17,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:17,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:17,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:17,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:17,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:17,244 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 180 proven. 118 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-14 00:07:17,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988889704] [2020-10-14 00:07:17,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:17,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 00:07:17,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998474482] [2020-10-14 00:07:17,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 00:07:17,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:17,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 00:07:17,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-14 00:07:17,248 INFO L87 Difference]: Start difference. First operand 164 states and 183 transitions. Second operand 19 states. [2020-10-14 00:07:18,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:18,172 INFO L93 Difference]: Finished difference Result 208 states and 226 transitions. [2020-10-14 00:07:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 00:07:18,173 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 130 [2020-10-14 00:07:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:18,175 INFO L225 Difference]: With dead ends: 208 [2020-10-14 00:07:18,175 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 00:07:18,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 00:07:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 00:07:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2020-10-14 00:07:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 00:07:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2020-10-14 00:07:18,194 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 130 [2020-10-14 00:07:18,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:18,194 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2020-10-14 00:07:18,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 00:07:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2020-10-14 00:07:18,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 00:07:18,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:18,196 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:18,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 00:07:18,196 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:18,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:18,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1892082971, now seen corresponding path program 21 times [2020-10-14 00:07:18,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:18,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389453809] [2020-10-14 00:07:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:18,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:20,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:20,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:21,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:23,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 00:07:23,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-14 00:07:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 00:07:23,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:23,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:07:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:07:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 00:07:23,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:23,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:23,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:23,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:23,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:23,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:23,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:23,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:23,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:23,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:23,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:23,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:23,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:23,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:07:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:23,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:23,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:23,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:23,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:23,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:23,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:23,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:07:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:23,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:23,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:23,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:23,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:23,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:23,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:23,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:07:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:23,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:23,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:23,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:23,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:23,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:07:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:23,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:23,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:23,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:23,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:23,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:23,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:23,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:23,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:23,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:23,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:07:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:23,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:23,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:23,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:23,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:23,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:23,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:23,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:07:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:23,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:23,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:23,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:23,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:23,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:23,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:23,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:07:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:23,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:23,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:23,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:23,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:23,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:23,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:23,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:23,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:23,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:23,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:23,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 15 proven. 322 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-14 00:07:23,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389453809] [2020-10-14 00:07:23,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:23,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 00:07:23,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892613557] [2020-10-14 00:07:23,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 00:07:23,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:23,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 00:07:23,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-10-14 00:07:23,732 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 23 states. [2020-10-14 00:07:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:25,714 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2020-10-14 00:07:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 00:07:25,715 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 130 [2020-10-14 00:07:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:25,717 INFO L225 Difference]: With dead ends: 140 [2020-10-14 00:07:25,717 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 00:07:25,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 00:07:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 00:07:25,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 131. [2020-10-14 00:07:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 00:07:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 143 transitions. [2020-10-14 00:07:25,742 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 143 transitions. Word has length 130 [2020-10-14 00:07:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:25,743 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 143 transitions. [2020-10-14 00:07:25,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 00:07:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 143 transitions. [2020-10-14 00:07:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 00:07:25,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:25,745 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:25,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 00:07:25,745 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:25,746 INFO L82 PathProgramCache]: Analyzing trace with hash -604065278, now seen corresponding path program 22 times [2020-10-14 00:07:25,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:25,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407113606] [2020-10-14 00:07:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:26,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:30,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:30,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 00:07:30,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 00:07:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 00:07:30,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:30,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:07:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:07:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 00:07:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:31,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:31,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:31,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:07:31,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:07:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:31,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:31,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:07:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:31,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:31,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:07:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:31,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:07:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:31,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:07:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:31,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:07:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:31,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:07:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:31,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:07:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:31,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:31,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:31,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:31,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:31,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:31,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:31,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:31,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 24 proven. 356 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-14 00:07:31,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407113606] [2020-10-14 00:07:31,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:31,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:07:31,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124530234] [2020-10-14 00:07:31,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:07:31,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:31,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:07:31,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:07:31,346 INFO L87 Difference]: Start difference. First operand 131 states and 143 transitions. Second operand 22 states. [2020-10-14 00:07:33,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:33,916 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2020-10-14 00:07:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 00:07:33,917 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 139 [2020-10-14 00:07:33,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:33,919 INFO L225 Difference]: With dead ends: 173 [2020-10-14 00:07:33,919 INFO L226 Difference]: Without dead ends: 157 [2020-10-14 00:07:33,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=255, Invalid=2607, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 00:07:33,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-14 00:07:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 136. [2020-10-14 00:07:33,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 00:07:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2020-10-14 00:07:33,942 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 139 [2020-10-14 00:07:33,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:33,942 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2020-10-14 00:07:33,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:07:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2020-10-14 00:07:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 00:07:33,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:33,943 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:33,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 00:07:33,944 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:33,944 INFO L82 PathProgramCache]: Analyzing trace with hash 319912187, now seen corresponding path program 23 times [2020-10-14 00:07:33,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:33,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063208397] [2020-10-14 00:07:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:33,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:34,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:35,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:35,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:35,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:35,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:35,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:38,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:38,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 00:07:38,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 00:07:38,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 00:07:38,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:38,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:07:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:07:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 00:07:38,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:39,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:39,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:39,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:39,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:07:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:39,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:39,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:07:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:39,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:39,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:39,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:07:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:39,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:39,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:39,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:39,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:07:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:39,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:39,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:39,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:39,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:39,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:07:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:39,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:39,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:39,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:07:39,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:07:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:39,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:39,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:39,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:39,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:39,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:07:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:39,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:39,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:39,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:39,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:07:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:39,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:39,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:39,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:07:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:39,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:39,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:39,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:07:39,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:39,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:07:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 101 proven. 320 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-14 00:07:39,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063208397] [2020-10-14 00:07:39,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:39,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:07:39,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522175863] [2020-10-14 00:07:39,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:07:39,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:39,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:07:39,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:07:39,537 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand 22 states. [2020-10-14 00:07:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:41,100 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2020-10-14 00:07:41,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 00:07:41,101 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 148 [2020-10-14 00:07:41,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:41,103 INFO L225 Difference]: With dead ends: 160 [2020-10-14 00:07:41,103 INFO L226 Difference]: Without dead ends: 139 [2020-10-14 00:07:41,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=1062, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 00:07:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-14 00:07:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2020-10-14 00:07:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 00:07:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-10-14 00:07:41,128 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 148 [2020-10-14 00:07:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:41,128 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-10-14 00:07:41,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:07:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-10-14 00:07:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 00:07:41,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:41,130 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:41,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 00:07:41,130 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:41,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1485526147, now seen corresponding path program 24 times [2020-10-14 00:07:41,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:41,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874856304] [2020-10-14 00:07:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:41,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:42,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 00:07:46,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-14 00:07:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 00:07:46,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 00:07:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:07:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 00:07:46,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:46,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:46,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:46,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:46,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:07:46,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:46,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:46,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:07:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:46,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:46,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:46,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:07:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:46,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:46,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:46,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:07:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:46,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:46,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:46,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:07:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:46,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:46,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:07:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:46,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:46,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:46,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:07:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:46,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:46,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:07:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:46,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:46,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:46,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:07:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:46,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:46,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:07:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:46,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:46,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:46,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:46,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:46,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:46,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 18 proven. 406 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 00:07:46,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874856304] [2020-10-14 00:07:46,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:46,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 00:07:46,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973830964] [2020-10-14 00:07:46,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 00:07:46,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:46,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 00:07:46,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-14 00:07:46,647 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 24 states. [2020-10-14 00:07:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:48,740 INFO L93 Difference]: Finished difference Result 213 states and 240 transitions. [2020-10-14 00:07:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 00:07:48,746 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 148 [2020-10-14 00:07:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:48,748 INFO L225 Difference]: With dead ends: 213 [2020-10-14 00:07:48,748 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 00:07:48,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=229, Invalid=2123, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 00:07:48,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 00:07:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 197. [2020-10-14 00:07:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 00:07:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 220 transitions. [2020-10-14 00:07:48,793 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 220 transitions. Word has length 148 [2020-10-14 00:07:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:48,793 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 220 transitions. [2020-10-14 00:07:48,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 00:07:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 220 transitions. [2020-10-14 00:07:48,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 00:07:48,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:48,795 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:48,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 00:07:48,795 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:48,796 INFO L82 PathProgramCache]: Analyzing trace with hash 697104864, now seen corresponding path program 25 times [2020-10-14 00:07:48,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:48,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321137116] [2020-10-14 00:07:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:49,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:51,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:51,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:51,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:51,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:52,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:53,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:53,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 00:07:53,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-14 00:07:53,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 00:07:53,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:53,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 00:07:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:07:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 00:07:53,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:07:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:07:54,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:07:54,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:07:54,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:07:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:07:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:07:54,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:07:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:07:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:07:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:07:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:07:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:07:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:07:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:07:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:07:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 00:07:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:54,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:54,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:07:54,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:07:54,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:07:54,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:07:54,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:07:54,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:07:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:07:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:07:54,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:07:54,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:07:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 275 proven. 195 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-10-14 00:07:54,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321137116] [2020-10-14 00:07:54,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:07:54,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 00:07:54,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645929022] [2020-10-14 00:07:54,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 00:07:54,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:07:54,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 00:07:54,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-10-14 00:07:54,371 INFO L87 Difference]: Start difference. First operand 197 states and 220 transitions. Second operand 22 states. [2020-10-14 00:07:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:07:55,933 INFO L93 Difference]: Finished difference Result 245 states and 266 transitions. [2020-10-14 00:07:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 00:07:55,933 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 157 [2020-10-14 00:07:55,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:07:55,935 INFO L225 Difference]: With dead ends: 245 [2020-10-14 00:07:55,936 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 00:07:55,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=369, Invalid=1437, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 00:07:55,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 00:07:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2020-10-14 00:07:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-14 00:07:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2020-10-14 00:07:55,958 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 157 [2020-10-14 00:07:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:07:55,959 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2020-10-14 00:07:55,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 00:07:55,959 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2020-10-14 00:07:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 00:07:55,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:07:55,960 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:07:55,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 00:07:55,960 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:07:55,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:07:55,961 INFO L82 PathProgramCache]: Analyzing trace with hash 499001798, now seen corresponding path program 26 times [2020-10-14 00:07:55,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:07:55,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740250197] [2020-10-14 00:07:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:07:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:07:56,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:56,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:57,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:58,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:58,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:58,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:07:58,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 00:08:01,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-14 00:08:01,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 00:08:01,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:08:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:08:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 00:08:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:01,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:08:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:08:01,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:01,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:08:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:08:01,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:01,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:08:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:01,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:08:01,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:01,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:01,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:01,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:08:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:01,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:01,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:08:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:01,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:01,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:01,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:08:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:01,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:01,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:01,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:01,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:08:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:01,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:01,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:01,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:08:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:01,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:08:01,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:01,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:01,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:08:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:01,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:01,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:01,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:01,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:08:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:01,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:01,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:01,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:01,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:08:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:01,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:01,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:01,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 00:08:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:01,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:01,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:01,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:01,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:01,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:01,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:01,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:01,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:01,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:01,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:01,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 20 proven. 504 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-10-14 00:08:01,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740250197] [2020-10-14 00:08:01,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:08:01,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 00:08:01,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052741163] [2020-10-14 00:08:01,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 00:08:01,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:08:01,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 00:08:01,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:08:01,751 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand 27 states. [2020-10-14 00:08:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:08:04,554 INFO L93 Difference]: Finished difference Result 223 states and 251 transitions. [2020-10-14 00:08:04,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 00:08:04,555 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 157 [2020-10-14 00:08:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:08:04,557 INFO L225 Difference]: With dead ends: 223 [2020-10-14 00:08:04,557 INFO L226 Difference]: Without dead ends: 221 [2020-10-14 00:08:04,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=363, Invalid=3059, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 00:08:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-14 00:08:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 206. [2020-10-14 00:08:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-14 00:08:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 230 transitions. [2020-10-14 00:08:04,599 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 230 transitions. Word has length 157 [2020-10-14 00:08:04,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:08:04,600 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 230 transitions. [2020-10-14 00:08:04,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 00:08:04,600 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 230 transitions. [2020-10-14 00:08:04,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 00:08:04,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:08:04,602 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:08:04,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 00:08:04,602 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:08:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:08:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2080211529, now seen corresponding path program 27 times [2020-10-14 00:08:04,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:08:04,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927215890] [2020-10-14 00:08:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:08:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:04,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:04,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:09,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:09,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 00:08:09,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-14 00:08:09,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 00:08:09,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:09,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:09,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:08:09,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:08:09,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 00:08:09,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:08:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:08:10,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:10,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:08:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:08:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:10,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:08:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:08:10,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:10,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:08:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:10,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:10,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:08:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:10,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:10,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:08:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:10,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:10,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:08:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:10,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:08:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:10,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:10,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:08:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:10,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:10,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:08:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:10,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:10,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:08:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:10,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:10,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 00:08:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:10,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:08:10,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 00:08:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:10,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:10,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:10,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:10,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:10,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:10,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 30 proven. 541 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-10-14 00:08:10,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927215890] [2020-10-14 00:08:10,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:08:10,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:08:10,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49352949] [2020-10-14 00:08:10,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:08:10,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:08:10,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:08:10,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:08:10,449 INFO L87 Difference]: Start difference. First operand 206 states and 230 transitions. Second operand 25 states. [2020-10-14 00:08:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:08:14,074 INFO L93 Difference]: Finished difference Result 244 states and 275 transitions. [2020-10-14 00:08:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 00:08:14,075 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 166 [2020-10-14 00:08:14,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:08:14,076 INFO L225 Difference]: With dead ends: 244 [2020-10-14 00:08:14,077 INFO L226 Difference]: Without dead ends: 228 [2020-10-14 00:08:14,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=292, Invalid=3490, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 00:08:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-14 00:08:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 217. [2020-10-14 00:08:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-14 00:08:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 245 transitions. [2020-10-14 00:08:14,122 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 245 transitions. Word has length 166 [2020-10-14 00:08:14,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:08:14,123 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 245 transitions. [2020-10-14 00:08:14,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:08:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 245 transitions. [2020-10-14 00:08:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 00:08:14,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:08:14,125 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:08:14,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 00:08:14,125 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:08:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:08:14,125 INFO L82 PathProgramCache]: Analyzing trace with hash 2016652701, now seen corresponding path program 28 times [2020-10-14 00:08:14,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:08:14,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745405882] [2020-10-14 00:08:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:08:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:15,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:15,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:15,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:15,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:16,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:19,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:19,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 00:08:19,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 00:08:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 00:08:19,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:19,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 00:08:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:08:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 00:08:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:20,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:08:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:08:20,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:20,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:08:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:08:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:20,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:08:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:20,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:08:20,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:20,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:08:20,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:08:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:20,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:20,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:20,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:20,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:08:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:20,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:20,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:20,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:20,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:08:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:20,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:20,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:20,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:20,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:08:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:20,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:20,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:20,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:20,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:08:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:20,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:20,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:20,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:20,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:08:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:20,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:20,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:20,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:08:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:20,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:20,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:20,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 00:08:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:20,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:20,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:20,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 00:08:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:20,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:20,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:20,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:20,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:08:20,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:20,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 24 proven. 619 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-14 00:08:20,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745405882] [2020-10-14 00:08:20,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:08:20,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 00:08:20,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12299135] [2020-10-14 00:08:20,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 00:08:20,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:08:20,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 00:08:20,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2020-10-14 00:08:20,242 INFO L87 Difference]: Start difference. First operand 217 states and 245 transitions. Second operand 30 states. [2020-10-14 00:08:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:08:23,076 INFO L93 Difference]: Finished difference Result 227 states and 254 transitions. [2020-10-14 00:08:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 00:08:23,077 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 166 [2020-10-14 00:08:23,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:08:23,079 INFO L225 Difference]: With dead ends: 227 [2020-10-14 00:08:23,079 INFO L226 Difference]: Without dead ends: 225 [2020-10-14 00:08:23,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=410, Invalid=3012, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 00:08:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-14 00:08:23,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 159. [2020-10-14 00:08:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-14 00:08:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 174 transitions. [2020-10-14 00:08:23,103 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 174 transitions. Word has length 166 [2020-10-14 00:08:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:08:23,104 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 174 transitions. [2020-10-14 00:08:23,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 00:08:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 174 transitions. [2020-10-14 00:08:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 00:08:23,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:08:23,105 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 7, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:08:23,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 00:08:23,105 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:08:23,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:08:23,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1290860314, now seen corresponding path program 29 times [2020-10-14 00:08:23,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:08:23,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227247709] [2020-10-14 00:08:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:08:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:23,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:23,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 00:08:28,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-14 00:08:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 00:08:28,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:08:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:08:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 00:08:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:08:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:08:28,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:28,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:08:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:08:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:28,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:08:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:28,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:28,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:28,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:08:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:28,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:08:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:28,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:28,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:08:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:28,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:28,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:08:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:28,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:28,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:08:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:28,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:28,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:08:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:28,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:28,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:08:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:28,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:28,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:08:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:28,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 00:08:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:28,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:28,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:28,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:28,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 00:08:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:08:28,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:08:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:08:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:08:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 00:08:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:28,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:28,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:28,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:28,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 00:08:28,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:28,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:28,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:08:28,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 00:08:28,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:08:28,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 127 proven. 495 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-14 00:08:28,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227247709] [2020-10-14 00:08:28,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:08:28,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:08:28,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962784720] [2020-10-14 00:08:28,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:08:28,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:08:28,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:08:28,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:08:28,853 INFO L87 Difference]: Start difference. First operand 159 states and 174 transitions. Second operand 25 states. [2020-10-14 00:08:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:08:31,342 INFO L93 Difference]: Finished difference Result 183 states and 199 transitions. [2020-10-14 00:08:31,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 00:08:31,343 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 175 [2020-10-14 00:08:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:08:31,345 INFO L225 Difference]: With dead ends: 183 [2020-10-14 00:08:31,345 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 00:08:31,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=263, Invalid=1807, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 00:08:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 00:08:31,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2020-10-14 00:08:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-14 00:08:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 171 transitions. [2020-10-14 00:08:31,377 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 171 transitions. Word has length 175 [2020-10-14 00:08:31,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:08:31,377 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 171 transitions. [2020-10-14 00:08:31,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:08:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 171 transitions. [2020-10-14 00:08:31,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 00:08:31,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:08:31,379 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:08:31,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 00:08:31,379 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:08:31,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:08:31,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1198668648, now seen corresponding path program 30 times [2020-10-14 00:08:31,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:08:31,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793710998] [2020-10-14 00:08:31,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:08:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:31,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:32,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:32,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:33,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:33,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:33,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:33,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:33,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:34,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:34,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:34,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:35,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:35,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:35,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:36,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:36,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 00:08:36,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-14 00:08:36,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 00:08:36,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:36,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:36,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 00:08:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:08:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 00:08:36,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:08:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:36,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:36,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:36,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:08:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:36,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:08:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:08:36,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:36,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:08:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:08:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:08:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:08:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:08:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:08:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:08:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:08:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:08:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:37,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 00:08:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 00:08:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 00:08:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:37,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:37,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:37,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:37,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:37,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:37,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:37,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:37,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 22 proven. 603 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-14 00:08:37,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793710998] [2020-10-14 00:08:37,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:08:37,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 00:08:37,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187819941] [2020-10-14 00:08:37,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 00:08:37,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:08:37,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 00:08:37,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-14 00:08:37,133 INFO L87 Difference]: Start difference. First operand 158 states and 171 transitions. Second operand 27 states. [2020-10-14 00:08:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:08:39,762 INFO L93 Difference]: Finished difference Result 246 states and 277 transitions. [2020-10-14 00:08:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 00:08:39,763 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 175 [2020-10-14 00:08:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:08:39,764 INFO L225 Difference]: With dead ends: 246 [2020-10-14 00:08:39,765 INFO L226 Difference]: Without dead ends: 244 [2020-10-14 00:08:39,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=249, Invalid=2721, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 00:08:39,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-14 00:08:39,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 230. [2020-10-14 00:08:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 00:08:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 257 transitions. [2020-10-14 00:08:39,801 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 257 transitions. Word has length 175 [2020-10-14 00:08:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:08:39,801 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 257 transitions. [2020-10-14 00:08:39,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 00:08:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 257 transitions. [2020-10-14 00:08:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 00:08:39,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:08:39,803 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:08:39,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 00:08:39,803 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:08:39,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:08:39,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2076910165, now seen corresponding path program 31 times [2020-10-14 00:08:39,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:08:39,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433743096] [2020-10-14 00:08:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:08:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:39,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:40,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:40,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:40,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:40,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:41,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:41,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:44,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:44,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 00:08:44,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 00:08:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 00:08:44,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:44,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 00:08:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 00:08:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 00:08:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:45,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:08:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:08:45,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:45,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:08:45,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:08:45,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:45,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:08:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:08:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:08:45,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:45,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 00:08:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:45,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 00:08:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:08:45,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:08:45,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 00:08:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:45,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:45,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 00:08:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:45,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:45,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 00:08:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:45,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:45,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:08:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:45,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:45,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 00:08:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:45,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:45,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:08:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:08:45,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 00:08:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:45,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:45,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 00:08:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:45,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 00:08:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:45,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:08:45,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-14 00:08:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:45,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:08:45,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:08:45,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:08:45,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:08:45,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:08:45,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:08:45,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:08:45,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:08:45,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:08:45,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:08:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 390 proven. 291 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-14 00:08:45,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433743096] [2020-10-14 00:08:45,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:08:45,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 00:08:45,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790274208] [2020-10-14 00:08:45,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 00:08:45,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:08:45,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 00:08:45,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2020-10-14 00:08:45,673 INFO L87 Difference]: Start difference. First operand 230 states and 257 transitions. Second operand 25 states. [2020-10-14 00:08:47,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:08:47,478 INFO L93 Difference]: Finished difference Result 282 states and 306 transitions. [2020-10-14 00:08:47,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 00:08:47,479 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 184 [2020-10-14 00:08:47,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:08:47,480 INFO L225 Difference]: With dead ends: 282 [2020-10-14 00:08:47,480 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 00:08:47,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=475, Invalid=1877, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 00:08:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 00:08:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 167. [2020-10-14 00:08:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 00:08:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 181 transitions. [2020-10-14 00:08:47,504 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 181 transitions. Word has length 184 [2020-10-14 00:08:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:08:47,504 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 181 transitions. [2020-10-14 00:08:47,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 00:08:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 181 transitions. [2020-10-14 00:08:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 00:08:47,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:08:47,506 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 12, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:08:47,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 00:08:47,506 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:08:47,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:08:47,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1195042945, now seen corresponding path program 32 times [2020-10-14 00:08:47,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:08:47,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680497612] [2020-10-14 00:08:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:08:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:08:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:47,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:08:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking...