/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/pr5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:29:28,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:29:28,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:29:28,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:29:28,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:29:28,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:29:28,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:29:28,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:29:28,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:29:28,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:29:28,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:29:28,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:29:28,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:29:28,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:29:28,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:29:28,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:29:28,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:29:28,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:29:28,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:29:28,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:29:28,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:29:28,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:29:28,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:29:28,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:29:28,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:29:28,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:29:28,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:29:28,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:29:28,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:29:28,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:29:28,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:29:28,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:29:28,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:29:28,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:29:28,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:29:28,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:29:28,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:29:28,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:29:28,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:29:28,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:29:28,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:29:28,716 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 18:29:28,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:29:28,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:29:28,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:29:28,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:29:28,778 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:29:28,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:29:28,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:29:28,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:29:28,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:29:28,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:29:28,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:29:28,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:29:28,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:29:28,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:29:28,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:29:28,780 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:29:28,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:29:28,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:29:28,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:29:28,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:29:28,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:29:28,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:29:28,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:29:28,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:29:28,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:29:28,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:29:28,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:29:28,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:29:28,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:29:28,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:29:29,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:29:29,143 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:29:29,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:29:29,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:29:29,149 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:29:29,149 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr5.c [2020-10-14 18:29:29,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62342e02d/2c46266a44a04a4c9ba20d52fbd062ae/FLAGd1dee95ee [2020-10-14 18:29:29,714 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:29:29,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/pr5.c [2020-10-14 18:29:29,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62342e02d/2c46266a44a04a4c9ba20d52fbd062ae/FLAGd1dee95ee [2020-10-14 18:29:30,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62342e02d/2c46266a44a04a4c9ba20d52fbd062ae [2020-10-14 18:29:30,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:29:30,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:29:30,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:29:30,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:29:30,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:29:30,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:29:30" (1/1) ... [2020-10-14 18:29:30,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30, skipping insertion in model container [2020-10-14 18:29:30,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:29:30" (1/1) ... [2020-10-14 18:29:30,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:29:30,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:29:30,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:29:30,306 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:29:30,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:29:30,363 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:29:30,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30 WrapperNode [2020-10-14 18:29:30,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:29:30,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:29:30,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:29:30,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:29:30,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30" (1/1) ... [2020-10-14 18:29:30,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30" (1/1) ... [2020-10-14 18:29:30,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30" (1/1) ... [2020-10-14 18:29:30,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30" (1/1) ... [2020-10-14 18:29:30,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30" (1/1) ... [2020-10-14 18:29:30,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30" (1/1) ... [2020-10-14 18:29:30,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30" (1/1) ... [2020-10-14 18:29:30,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:29:30,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:29:30,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:29:30,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:29:30,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30" (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 18:29:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:29:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:29:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:29:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:29:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:29:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:29:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:29:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:29:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:29:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:29:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:29:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:29:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:29:30,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:29:30,920 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:29:30,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:29:30 BoogieIcfgContainer [2020-10-14 18:29:30,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:29:30,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:29:30,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:29:30,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:29:30,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:29:30" (1/3) ... [2020-10-14 18:29:30,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b65632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:29:30, skipping insertion in model container [2020-10-14 18:29:30,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:29:30" (2/3) ... [2020-10-14 18:29:30,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b65632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:29:30, skipping insertion in model container [2020-10-14 18:29:30,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:29:30" (3/3) ... [2020-10-14 18:29:30,933 INFO L109 eAbstractionObserver]: Analyzing ICFG pr5.c [2020-10-14 18:29:30,944 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:29:30,959 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:29:30,980 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:29:31,001 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:29:31,001 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:29:31,002 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:29:31,002 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:29:31,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:29:31,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:29:31,002 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:29:31,002 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:29:31,022 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-14 18:29:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 18:29:31,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:31,029 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 18:29:31,029 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:31,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash 99219367, now seen corresponding path program 1 times [2020-10-14 18:29:31,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:31,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801057012] [2020-10-14 18:29:31,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:31,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:31,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:32,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:32,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 18:29:32,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:29:32,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1264 [2020-10-14 18:29:32,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:32,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:29:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:29:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:29:32,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:32,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:32,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:32,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:32,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:32,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:32,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:32,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:32,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:32,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:32,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:29:32,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 18:29:32,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:32,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:32,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:32,812 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 18:29:32,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801057012] [2020-10-14 18:29:32,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:32,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 18:29:32,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315176055] [2020-10-14 18:29:32,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:29:32,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:32,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:29:32,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:29:32,840 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 6 states. [2020-10-14 18:29:33,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:33,091 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-10-14 18:29:33,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:29:33,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-14 18:29:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:33,103 INFO L225 Difference]: With dead ends: 82 [2020-10-14 18:29:33,104 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 18:29:33,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:29:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 18:29:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2020-10-14 18:29:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 18:29:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-14 18:29:33,158 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 22 [2020-10-14 18:29:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:33,159 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-14 18:29:33,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:29:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-14 18:29:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 18:29:33,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:33,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:33,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:29:33,161 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:33,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:33,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1191286555, now seen corresponding path program 1 times [2020-10-14 18:29:33,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:33,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962593637] [2020-10-14 18:29:33,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:33,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:33,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:33,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:33,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 18:29:33,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:29:33,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-14 18:29:33,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:33,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:29:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:29:33,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:33,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:33,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:33,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:33,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:33,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:33,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:33,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:33,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:33,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:33,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:33,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:33,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:33,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:33,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:33,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:33,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:33,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:33,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:29:33,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962593637] [2020-10-14 18:29:33,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:33,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:29:33,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140914722] [2020-10-14 18:29:33,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:29:33,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:33,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:29:33,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:29:33,790 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 10 states. [2020-10-14 18:29:34,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:34,266 INFO L93 Difference]: Finished difference Result 90 states and 125 transitions. [2020-10-14 18:29:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:29:34,267 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-14 18:29:34,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:34,269 INFO L225 Difference]: With dead ends: 90 [2020-10-14 18:29:34,270 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 18:29:34,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:29:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 18:29:34,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 49. [2020-10-14 18:29:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 18:29:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2020-10-14 18:29:34,284 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 29 [2020-10-14 18:29:34,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:34,285 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2020-10-14 18:29:34,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:29:34,285 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2020-10-14 18:29:34,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 18:29:34,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:34,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:34,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:29:34,287 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:34,288 INFO L82 PathProgramCache]: Analyzing trace with hash 182016347, now seen corresponding path program 1 times [2020-10-14 18:29:34,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:34,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419886354] [2020-10-14 18:29:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 18:29:34,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:29:34,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-14 18:29:34,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:29:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:29:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:34,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:34,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:34,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:34,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:34,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:29:34,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:34,647 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 18:29:34,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419886354] [2020-10-14 18:29:34,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:34,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:29:34,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302354716] [2020-10-14 18:29:34,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:29:34,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:34,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:29:34,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:29:34,650 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand 5 states. [2020-10-14 18:29:34,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:34,804 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-10-14 18:29:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:29:34,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-14 18:29:34,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:34,807 INFO L225 Difference]: With dead ends: 79 [2020-10-14 18:29:34,808 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 18:29:34,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:29:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 18:29:34,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-10-14 18:29:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 18:29:34,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2020-10-14 18:29:34,819 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 29 [2020-10-14 18:29:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:34,820 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-14 18:29:34,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:29:34,820 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2020-10-14 18:29:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 18:29:34,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:34,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:34,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:29:34,822 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:34,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:34,822 INFO L82 PathProgramCache]: Analyzing trace with hash -211010663, now seen corresponding path program 1 times [2020-10-14 18:29:34,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:34,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493670897] [2020-10-14 18:29:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:35,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:35,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 18:29:35,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:35,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 18:29:35,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:35,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:29:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:35,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 18:29:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:35,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:35,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:35,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:35,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:35,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:35,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:35,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:35,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:35,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:35,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:35,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:35,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:35,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:35,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:35,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:35,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:35,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:29:35,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493670897] [2020-10-14 18:29:35,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:35,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:29:35,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325381621] [2020-10-14 18:29:35,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:29:35,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:35,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:29:35,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:29:35,209 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand 10 states. [2020-10-14 18:29:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:35,716 INFO L93 Difference]: Finished difference Result 96 states and 131 transitions. [2020-10-14 18:29:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:29:35,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-14 18:29:35,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:35,720 INFO L225 Difference]: With dead ends: 96 [2020-10-14 18:29:35,720 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 18:29:35,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:29:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 18:29:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 60. [2020-10-14 18:29:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 18:29:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2020-10-14 18:29:35,733 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 29 [2020-10-14 18:29:35,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:35,733 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2020-10-14 18:29:35,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:29:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2020-10-14 18:29:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 18:29:35,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:35,735 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] [2020-10-14 18:29:35,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:29:35,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:35,736 INFO L82 PathProgramCache]: Analyzing trace with hash -335065565, now seen corresponding path program 1 times [2020-10-14 18:29:35,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:35,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570431345] [2020-10-14 18:29:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:35,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:35,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:35,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 18:29:35,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:29:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 18:29:35,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:35,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:29:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 18:29:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:36,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:36,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:36,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:36,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:36,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:36,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:36,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:36,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:36,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:36,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:36,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:29:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:36,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:29:36,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570431345] [2020-10-14 18:29:36,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:36,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:29:36,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887936019] [2020-10-14 18:29:36,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:29:36,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:36,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:29:36,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:29:36,036 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand 5 states. [2020-10-14 18:29:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:36,180 INFO L93 Difference]: Finished difference Result 100 states and 134 transitions. [2020-10-14 18:29:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:29:36,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-14 18:29:36,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:36,182 INFO L225 Difference]: With dead ends: 100 [2020-10-14 18:29:36,182 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 18:29:36,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:29:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 18:29:36,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2020-10-14 18:29:36,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 18:29:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2020-10-14 18:29:36,193 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 36 [2020-10-14 18:29:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:36,193 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2020-10-14 18:29:36,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:29:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2020-10-14 18:29:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 18:29:36,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:36,195 INFO L422 BasicCegarLoop]: trace histogram [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 18:29:36,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:29:36,196 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:36,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:36,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1923413467, now seen corresponding path program 1 times [2020-10-14 18:29:36,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:36,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730637090] [2020-10-14 18:29:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:36,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:36,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 18:29:36,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 18:29:36,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:36,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 18:29:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:29:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:36,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:36,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:36,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:36,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:36,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:36,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:36,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:36,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:36,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:36,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:36,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:36,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:36,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:36,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:36,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:36,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:29:36,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730637090] [2020-10-14 18:29:36,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:36,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:29:36,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691268624] [2020-10-14 18:29:36,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:29:36,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:36,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:29:36,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:29:36,315 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand 4 states. [2020-10-14 18:29:36,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:36,410 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2020-10-14 18:29:36,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:29:36,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-14 18:29:36,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:36,412 INFO L225 Difference]: With dead ends: 97 [2020-10-14 18:29:36,412 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 18:29:36,413 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 18:29:36,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 18:29:36,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2020-10-14 18:29:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 18:29:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2020-10-14 18:29:36,421 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 36 [2020-10-14 18:29:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:36,422 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2020-10-14 18:29:36,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:29:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2020-10-14 18:29:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 18:29:36,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:36,424 INFO L422 BasicCegarLoop]: trace histogram [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 18:29:36,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:29:36,424 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:36,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:36,425 INFO L82 PathProgramCache]: Analyzing trace with hash -489594391, now seen corresponding path program 2 times [2020-10-14 18:29:36,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:36,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068067243] [2020-10-14 18:29:36,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:36,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:36,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 18:29:36,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 18:29:36,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:36,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 18:29:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:29:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:36,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:36,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:36,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:36,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:36,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:36,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:36,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:36,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:36,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:36,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:36,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:36,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:36,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:36,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:29:36,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068067243] [2020-10-14 18:29:36,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:36,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:29:36,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458599190] [2020-10-14 18:29:36,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:29:36,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:36,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:29:36,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:29:36,534 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 4 states. [2020-10-14 18:29:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:36,634 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2020-10-14 18:29:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:29:36,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-14 18:29:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:36,635 INFO L225 Difference]: With dead ends: 82 [2020-10-14 18:29:36,635 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 18:29:36,636 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 18:29:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 18:29:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-14 18:29:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 18:29:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-10-14 18:29:36,644 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 36 [2020-10-14 18:29:36,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:36,644 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-10-14 18:29:36,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:29:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-10-14 18:29:36,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 18:29:36,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:36,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:36,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:29:36,646 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:36,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:36,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1658925748, now seen corresponding path program 1 times [2020-10-14 18:29:36,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:36,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303109394] [2020-10-14 18:29:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:36,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:36,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 18:29:36,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:36,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 18:29:36,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:36,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:29:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 18:29:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:36,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:37,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:37,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:37,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:37,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:37,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:37,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:37,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:37,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:37,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:37,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:29:37,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:37,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:37,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:37,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:37,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:37,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:37,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:29:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:37,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:37,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:37,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:29:37,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:37,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:37,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:29:37,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303109394] [2020-10-14 18:29:37,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:37,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 18:29:37,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335830399] [2020-10-14 18:29:37,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 18:29:37,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:37,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 18:29:37,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:29:37,034 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 9 states. [2020-10-14 18:29:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:37,368 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2020-10-14 18:29:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 18:29:37,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-14 18:29:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:37,370 INFO L225 Difference]: With dead ends: 125 [2020-10-14 18:29:37,370 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 18:29:37,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:29:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 18:29:37,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2020-10-14 18:29:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 18:29:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2020-10-14 18:29:37,391 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 38 [2020-10-14 18:29:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:37,392 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2020-10-14 18:29:37,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 18:29:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2020-10-14 18:29:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 18:29:37,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:37,398 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:37,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:29:37,399 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:37,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:37,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1440071030, now seen corresponding path program 1 times [2020-10-14 18:29:37,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:37,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077150457] [2020-10-14 18:29:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:37,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 18:29:37,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:29:37,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-14 18:29:37,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:37,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:29:37,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:37,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 18:29:37,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:37,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:37,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:37,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:37,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:37,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:37,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:37,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:37,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:37,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:37,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:37,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:37,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:37,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:37,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 18:29:37,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:37,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:37,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:37,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:29:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:37,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:37,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:37,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:37,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:29:37,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077150457] [2020-10-14 18:29:37,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:37,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:29:37,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964996978] [2020-10-14 18:29:37,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:29:37,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:37,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:29:37,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:29:37,976 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand 11 states. [2020-10-14 18:29:38,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:38,765 INFO L93 Difference]: Finished difference Result 189 states and 266 transitions. [2020-10-14 18:29:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:29:38,766 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-14 18:29:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:38,768 INFO L225 Difference]: With dead ends: 189 [2020-10-14 18:29:38,769 INFO L226 Difference]: Without dead ends: 187 [2020-10-14 18:29:38,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:29:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-14 18:29:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 107. [2020-10-14 18:29:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 18:29:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 144 transitions. [2020-10-14 18:29:38,785 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 144 transitions. Word has length 38 [2020-10-14 18:29:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:38,786 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 144 transitions. [2020-10-14 18:29:38,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:29:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 144 transitions. [2020-10-14 18:29:38,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:29:38,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:38,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:38,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:29:38,788 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:38,788 INFO L82 PathProgramCache]: Analyzing trace with hash 159017792, now seen corresponding path program 1 times [2020-10-14 18:29:38,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:38,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759363978] [2020-10-14 18:29:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:38,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:39,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 18:29:39,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:29:39,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-14 18:29:39,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:39,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:29:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 18:29:39,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:39,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:39,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:39,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:39,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:39,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:39,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:39,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:39,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:29:39,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:39,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:39,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:39,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:39,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:39,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:39,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:39,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:39,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:39,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 18:29:39,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759363978] [2020-10-14 18:29:39,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:39,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:29:39,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519694644] [2020-10-14 18:29:39,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:29:39,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:39,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:29:39,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:29:39,589 INFO L87 Difference]: Start difference. First operand 107 states and 144 transitions. Second operand 5 states. [2020-10-14 18:29:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:39,732 INFO L93 Difference]: Finished difference Result 161 states and 214 transitions. [2020-10-14 18:29:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:29:39,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-14 18:29:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:39,734 INFO L225 Difference]: With dead ends: 161 [2020-10-14 18:29:39,734 INFO L226 Difference]: Without dead ends: 115 [2020-10-14 18:29:39,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:29:39,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-14 18:29:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2020-10-14 18:29:39,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 18:29:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 142 transitions. [2020-10-14 18:29:39,746 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 142 transitions. Word has length 45 [2020-10-14 18:29:39,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:39,747 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 142 transitions. [2020-10-14 18:29:39,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:29:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 142 transitions. [2020-10-14 18:29:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:29:39,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:39,748 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-10-14 18:29:39,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:29:39,749 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:39,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:39,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1529925950, now seen corresponding path program 1 times [2020-10-14 18:29:39,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:39,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835861720] [2020-10-14 18:29:39,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:40,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:40,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 18:29:40,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 18:29:40,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-14 18:29:40,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:40,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:29:40,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 18:29:40,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:40,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:40,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:40,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:40,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:40,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:40,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:40,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:40,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:40,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:40,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:40,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:40,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:40,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:29:40,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:40,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:40,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:40,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:40,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:40,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:40,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:40,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:40,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:40,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:40,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 18:29:40,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835861720] [2020-10-14 18:29:40,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:40,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:29:40,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022882438] [2020-10-14 18:29:40,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:29:40,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:40,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:29:40,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:29:40,560 INFO L87 Difference]: Start difference. First operand 107 states and 142 transitions. Second operand 5 states. [2020-10-14 18:29:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:40,732 INFO L93 Difference]: Finished difference Result 146 states and 188 transitions. [2020-10-14 18:29:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:29:40,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-14 18:29:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:40,735 INFO L225 Difference]: With dead ends: 146 [2020-10-14 18:29:40,736 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 18:29:40,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:29:40,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 18:29:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2020-10-14 18:29:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 18:29:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 113 transitions. [2020-10-14 18:29:40,758 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 113 transitions. Word has length 45 [2020-10-14 18:29:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:40,758 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 113 transitions. [2020-10-14 18:29:40,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:29:40,759 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 113 transitions. [2020-10-14 18:29:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:29:40,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:40,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:40,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:29:40,760 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:40,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:40,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1044274880, now seen corresponding path program 1 times [2020-10-14 18:29:40,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:40,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779286231] [2020-10-14 18:29:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:40,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:40,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:40,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:41,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 18:29:41,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:29:41,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-14 18:29:41,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:41,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:41,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:29:41,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:41,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 18:29:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:41,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:41,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:41,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:41,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:41,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:29:41,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:41,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:41,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:41,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:41,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:41,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:41,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:41,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:41,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:41,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 18:29:41,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:41,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:41,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:41,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:41,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:41,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:41,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:41,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:41,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:41,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:29:41,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779286231] [2020-10-14 18:29:41,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:41,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:29:41,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369035289] [2020-10-14 18:29:41,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:29:41,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:41,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:29:41,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:29:41,287 INFO L87 Difference]: Start difference. First operand 88 states and 113 transitions. Second operand 5 states. [2020-10-14 18:29:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:41,479 INFO L93 Difference]: Finished difference Result 189 states and 251 transitions. [2020-10-14 18:29:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:29:41,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-14 18:29:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:41,484 INFO L225 Difference]: With dead ends: 189 [2020-10-14 18:29:41,484 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 18:29:41,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:29:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 18:29:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 105. [2020-10-14 18:29:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 18:29:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2020-10-14 18:29:41,507 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 45 [2020-10-14 18:29:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:41,508 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2020-10-14 18:29:41,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:29:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2020-10-14 18:29:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:29:41,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:41,509 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-10-14 18:29:41,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:29:41,510 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:41,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1327464382, now seen corresponding path program 1 times [2020-10-14 18:29:41,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:41,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127185807] [2020-10-14 18:29:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:41,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 18:29:41,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:29:41,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 18:29:41,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:41,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:29:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:41,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:29:41,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:41,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:41,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:41,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:41,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:41,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:41,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:41,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:29:41,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:41,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:41,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:41,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:41,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:41,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:41,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:41,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:41,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:41,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:41,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:41,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:41,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:41,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 18:29:41,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127185807] [2020-10-14 18:29:41,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:41,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:29:41,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334399417] [2020-10-14 18:29:41,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:29:41,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:41,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:29:41,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:29:41,855 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand 5 states. [2020-10-14 18:29:41,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:41,979 INFO L93 Difference]: Finished difference Result 143 states and 183 transitions. [2020-10-14 18:29:41,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:29:41,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-14 18:29:41,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:41,981 INFO L225 Difference]: With dead ends: 143 [2020-10-14 18:29:41,981 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 18:29:41,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:29:41,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 18:29:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2020-10-14 18:29:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 18:29:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2020-10-14 18:29:41,993 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 45 [2020-10-14 18:29:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:41,993 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2020-10-14 18:29:41,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:29:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2020-10-14 18:29:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:29:41,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:41,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:41,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:29:41,995 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:41,995 INFO L82 PathProgramCache]: Analyzing trace with hash -2145112832, now seen corresponding path program 1 times [2020-10-14 18:29:41,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:41,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162062041] [2020-10-14 18:29:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 18:29:42,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 18:29:42,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:29:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:29:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:42,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:42,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:42,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:42,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:42,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:29:42,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162062041] [2020-10-14 18:29:42,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:42,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:29:42,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818333429] [2020-10-14 18:29:42,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:29:42,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:42,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:29:42,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:29:42,111 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand 4 states. [2020-10-14 18:29:42,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:42,226 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2020-10-14 18:29:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:29:42,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-14 18:29:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:42,229 INFO L225 Difference]: With dead ends: 128 [2020-10-14 18:29:42,229 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 18:29:42,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 18:29:42,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 18:29:42,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2020-10-14 18:29:42,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 18:29:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2020-10-14 18:29:42,240 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 45 [2020-10-14 18:29:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:42,240 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2020-10-14 18:29:42,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:29:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2020-10-14 18:29:42,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 18:29:42,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:42,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:42,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:29:42,241 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:42,242 INFO L82 PathProgramCache]: Analyzing trace with hash -977764156, now seen corresponding path program 2 times [2020-10-14 18:29:42,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:42,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654282204] [2020-10-14 18:29:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 18:29:42,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 18:29:42,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 18:29:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:29:42,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:42,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:42,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:42,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:42,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:29:42,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654282204] [2020-10-14 18:29:42,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:42,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:29:42,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588625002] [2020-10-14 18:29:42,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:29:42,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:42,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:29:42,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:29:42,355 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand 4 states. [2020-10-14 18:29:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:42,458 INFO L93 Difference]: Finished difference Result 110 states and 135 transitions. [2020-10-14 18:29:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:29:42,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-14 18:29:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:42,460 INFO L225 Difference]: With dead ends: 110 [2020-10-14 18:29:42,460 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 18:29:42,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 18:29:42,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 18:29:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2020-10-14 18:29:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 18:29:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-10-14 18:29:42,471 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 45 [2020-10-14 18:29:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:42,471 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-10-14 18:29:42,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:29:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-10-14 18:29:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 18:29:42,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:42,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1] [2020-10-14 18:29:42,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:29:42,472 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:42,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:42,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1406233341, now seen corresponding path program 2 times [2020-10-14 18:29:42,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:42,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111937807] [2020-10-14 18:29:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 18:29:42,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 18:29:42,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:29:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 18:29:42,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:42,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:42,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:42,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:29:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:42,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:29:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:42,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:29:42,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111937807] [2020-10-14 18:29:42,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:42,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:29:42,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750020415] [2020-10-14 18:29:42,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:29:42,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:42,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:29:42,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:29:42,840 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 10 states. [2020-10-14 18:29:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:43,579 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-10-14 18:29:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:29:43,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-14 18:29:43,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:43,582 INFO L225 Difference]: With dead ends: 258 [2020-10-14 18:29:43,582 INFO L226 Difference]: Without dead ends: 242 [2020-10-14 18:29:43,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:29:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-14 18:29:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 117. [2020-10-14 18:29:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 18:29:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 149 transitions. [2020-10-14 18:29:43,600 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 149 transitions. Word has length 47 [2020-10-14 18:29:43,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:43,600 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 149 transitions. [2020-10-14 18:29:43,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:29:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 149 transitions. [2020-10-14 18:29:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 18:29:43,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:43,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1] [2020-10-14 18:29:43,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:29:43,602 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:43,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:43,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1428865595, now seen corresponding path program 1 times [2020-10-14 18:29:43,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:43,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555964779] [2020-10-14 18:29:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:43,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:43,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:44,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:44,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 18:29:44,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:29:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-14 18:29:44,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:44,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:29:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:44,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 18:29:44,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:44,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:44,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:44,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:44,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:44,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:44,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:44,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:44,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:44,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:44,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:44,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:44,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:44,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:44,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:44,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:44,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:44,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:44,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:44,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:29:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:44,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:44,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:44,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:44,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:44,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:44,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:29:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:44,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:44,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:44,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:44,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:44,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:44,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:44,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 18:29:44,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555964779] [2020-10-14 18:29:44,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:44,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:29:44,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058661479] [2020-10-14 18:29:44,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:29:44,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:44,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:29:44,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:29:44,237 INFO L87 Difference]: Start difference. First operand 117 states and 149 transitions. Second operand 12 states. [2020-10-14 18:29:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:44,989 INFO L93 Difference]: Finished difference Result 239 states and 310 transitions. [2020-10-14 18:29:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:29:44,991 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-14 18:29:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:44,993 INFO L225 Difference]: With dead ends: 239 [2020-10-14 18:29:44,993 INFO L226 Difference]: Without dead ends: 237 [2020-10-14 18:29:44,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:29:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-14 18:29:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 182. [2020-10-14 18:29:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-14 18:29:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 239 transitions. [2020-10-14 18:29:45,023 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 239 transitions. Word has length 47 [2020-10-14 18:29:45,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:45,024 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 239 transitions. [2020-10-14 18:29:45,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:29:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 239 transitions. [2020-10-14 18:29:45,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 18:29:45,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:45,025 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:45,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:29:45,026 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:45,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:45,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1438516805, now seen corresponding path program 1 times [2020-10-14 18:29:45,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:45,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801036869] [2020-10-14 18:29:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:45,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 18:29:45,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:29:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-14 18:29:45,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:45,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:29:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 18:29:45,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:45,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:45,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:45,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:45,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:45,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:45,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:45,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:29:45,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:45,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:45,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:45,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:45,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:45,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:45,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:45,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:45,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:45,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:45,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:45,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:45,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:45,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:29:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:45,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:45,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:45,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:45,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:45,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:45,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 18:29:45,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801036869] [2020-10-14 18:29:45,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:45,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:29:45,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064026997] [2020-10-14 18:29:45,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:29:45,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:45,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:29:45,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:29:45,592 INFO L87 Difference]: Start difference. First operand 182 states and 239 transitions. Second operand 5 states. [2020-10-14 18:29:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:45,723 INFO L93 Difference]: Finished difference Result 230 states and 294 transitions. [2020-10-14 18:29:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:29:45,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-14 18:29:45,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:45,726 INFO L225 Difference]: With dead ends: 230 [2020-10-14 18:29:45,726 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 18:29:45,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:29:45,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 18:29:45,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 134. [2020-10-14 18:29:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 18:29:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 168 transitions. [2020-10-14 18:29:45,746 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 168 transitions. Word has length 54 [2020-10-14 18:29:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:45,746 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 168 transitions. [2020-10-14 18:29:45,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:29:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 168 transitions. [2020-10-14 18:29:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 18:29:45,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:45,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:45,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:29:45,748 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:45,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:45,748 INFO L82 PathProgramCache]: Analyzing trace with hash -821492155, now seen corresponding path program 1 times [2020-10-14 18:29:45,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:45,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524771871] [2020-10-14 18:29:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:45,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 18:29:45,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 18:29:45,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:45,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 18:29:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:29:45,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:45,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:45,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:45,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:45,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:45,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:45,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:45,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:45,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:45,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:45,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:45,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:45,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:45,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:45,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:45,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:45,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:45,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:45,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:45,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:45,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:45,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:45,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:29:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:45,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:45,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:45,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:45,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:45,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:45,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:45,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:45,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:45,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 18:29:45,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524771871] [2020-10-14 18:29:45,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:45,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:29:45,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678769685] [2020-10-14 18:29:45,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:29:45,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:45,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:29:45,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:29:45,858 INFO L87 Difference]: Start difference. First operand 134 states and 168 transitions. Second operand 4 states. [2020-10-14 18:29:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:45,974 INFO L93 Difference]: Finished difference Result 184 states and 227 transitions. [2020-10-14 18:29:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:29:45,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-14 18:29:45,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:45,976 INFO L225 Difference]: With dead ends: 184 [2020-10-14 18:29:45,976 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 18:29:45,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 18:29:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 18:29:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 134. [2020-10-14 18:29:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 18:29:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 166 transitions. [2020-10-14 18:29:46,004 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 166 transitions. Word has length 54 [2020-10-14 18:29:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:46,005 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 166 transitions. [2020-10-14 18:29:46,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:29:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 166 transitions. [2020-10-14 18:29:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 18:29:46,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:46,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:46,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:29:46,006 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:46,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:46,007 INFO L82 PathProgramCache]: Analyzing trace with hash -184592887, now seen corresponding path program 2 times [2020-10-14 18:29:46,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:46,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812734475] [2020-10-14 18:29:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 18:29:46,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 18:29:46,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 18:29:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:29:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:46,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:46,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:46,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:46,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:46,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:46,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:46,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:46,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:46,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:46,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:29:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:46,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:46,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 18:29:46,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812734475] [2020-10-14 18:29:46,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:46,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:29:46,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114726562] [2020-10-14 18:29:46,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:29:46,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:46,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:29:46,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:29:46,150 INFO L87 Difference]: Start difference. First operand 134 states and 166 transitions. Second operand 4 states. [2020-10-14 18:29:46,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:46,299 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2020-10-14 18:29:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:29:46,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-14 18:29:46,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:46,302 INFO L225 Difference]: With dead ends: 164 [2020-10-14 18:29:46,302 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 18:29:46,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 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 18:29:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 18:29:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2020-10-14 18:29:46,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 18:29:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 142 transitions. [2020-10-14 18:29:46,319 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 142 transitions. Word has length 54 [2020-10-14 18:29:46,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:46,319 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 142 transitions. [2020-10-14 18:29:46,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:29:46,319 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 142 transitions. [2020-10-14 18:29:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 18:29:46,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:46,320 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:46,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:29:46,321 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:46,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:46,321 INFO L82 PathProgramCache]: Analyzing trace with hash -158948244, now seen corresponding path program 3 times [2020-10-14 18:29:46,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:46,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504567095] [2020-10-14 18:29:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:29:46,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 18:29:46,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:29:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 18:29:46,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:46,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:46,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:46,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:46,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:46,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:46,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:46,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:46,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:46,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:46,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:46,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:29:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:46,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:46,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:46,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:46,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:46,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:46,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:29:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:46,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:29:46,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:46,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:29:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:46,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:46,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:46,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:46,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:46,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:46,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:46,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:46,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 18:29:46,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504567095] [2020-10-14 18:29:46,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:46,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:29:46,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063020464] [2020-10-14 18:29:46,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:29:46,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:46,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:29:46,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:29:46,755 INFO L87 Difference]: Start difference. First operand 117 states and 142 transitions. Second operand 11 states. [2020-10-14 18:29:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:48,133 INFO L93 Difference]: Finished difference Result 287 states and 358 transitions. [2020-10-14 18:29:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:29:48,134 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-14 18:29:48,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:48,136 INFO L225 Difference]: With dead ends: 287 [2020-10-14 18:29:48,136 INFO L226 Difference]: Without dead ends: 271 [2020-10-14 18:29:48,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2020-10-14 18:29:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-14 18:29:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 141. [2020-10-14 18:29:48,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 18:29:48,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 174 transitions. [2020-10-14 18:29:48,167 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 174 transitions. Word has length 56 [2020-10-14 18:29:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:48,168 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 174 transitions. [2020-10-14 18:29:48,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:29:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 174 transitions. [2020-10-14 18:29:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 18:29:48,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:48,169 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:48,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:29:48,170 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:48,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:48,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1188307542, now seen corresponding path program 1 times [2020-10-14 18:29:48,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:48,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547776309] [2020-10-14 18:29:48,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:48,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:29:48,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:29:48,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-14 18:29:48,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:48,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:29:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:48,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 18:29:48,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:48,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:48,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:48,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:48,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:48,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:48,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:48,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:48,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:48,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:29:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:48,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:48,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:29:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:48,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:48,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:48,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:48,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:29:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:48,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:48,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:48,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:48,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:48,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:29:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:48,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:48,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:48,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:48,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 18:29:48,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547776309] [2020-10-14 18:29:48,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:48,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:29:48,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507026307] [2020-10-14 18:29:48,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:29:48,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:48,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:29:48,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:29:48,649 INFO L87 Difference]: Start difference. First operand 141 states and 174 transitions. Second operand 13 states. [2020-10-14 18:29:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:50,048 INFO L93 Difference]: Finished difference Result 313 states and 384 transitions. [2020-10-14 18:29:50,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:29:50,049 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-14 18:29:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:50,054 INFO L225 Difference]: With dead ends: 313 [2020-10-14 18:29:50,054 INFO L226 Difference]: Without dead ends: 311 [2020-10-14 18:29:50,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=1056, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:29:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-14 18:29:50,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 187. [2020-10-14 18:29:50,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 18:29:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 233 transitions. [2020-10-14 18:29:50,099 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 233 transitions. Word has length 56 [2020-10-14 18:29:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:50,099 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 233 transitions. [2020-10-14 18:29:50,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:29:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 233 transitions. [2020-10-14 18:29:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 18:29:50,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:50,102 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:50,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:29:50,103 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:50,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1159494432, now seen corresponding path program 1 times [2020-10-14 18:29:50,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:50,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916878972] [2020-10-14 18:29:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 18:29:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:29:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-14 18:29:50,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:29:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 18:29:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:50,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:50,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:29:50,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:50,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:29:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:29:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 18:29:50,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916878972] [2020-10-14 18:29:50,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:50,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:29:50,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621778656] [2020-10-14 18:29:50,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:29:50,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:50,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:29:50,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:29:50,648 INFO L87 Difference]: Start difference. First operand 187 states and 233 transitions. Second operand 5 states. [2020-10-14 18:29:50,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:50,818 INFO L93 Difference]: Finished difference Result 256 states and 315 transitions. [2020-10-14 18:29:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:29:50,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-14 18:29:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:50,820 INFO L225 Difference]: With dead ends: 256 [2020-10-14 18:29:50,820 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 18:29:50,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:29:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 18:29:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 166. [2020-10-14 18:29:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 18:29:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 204 transitions. [2020-10-14 18:29:50,849 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 204 transitions. Word has length 63 [2020-10-14 18:29:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:50,850 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 204 transitions. [2020-10-14 18:29:50,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:29:50,850 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 204 transitions. [2020-10-14 18:29:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 18:29:50,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:50,851 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:50,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:29:50,852 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:50,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:50,852 INFO L82 PathProgramCache]: Analyzing trace with hash -186541984, now seen corresponding path program 1 times [2020-10-14 18:29:50,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:50,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364706375] [2020-10-14 18:29:50,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 18:29:50,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 18:29:50,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 18:29:50,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:29:50,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:50,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:50,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:50,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:50,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:50,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:29:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:29:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:50,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:50,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 18:29:50,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364706375] [2020-10-14 18:29:50,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:50,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:29:50,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094387512] [2020-10-14 18:29:50,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:29:50,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:50,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:29:50,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:29:50,997 INFO L87 Difference]: Start difference. First operand 166 states and 204 transitions. Second operand 4 states. [2020-10-14 18:29:51,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:51,117 INFO L93 Difference]: Finished difference Result 216 states and 263 transitions. [2020-10-14 18:29:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:29:51,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 18:29:51,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:51,119 INFO L225 Difference]: With dead ends: 216 [2020-10-14 18:29:51,119 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 18:29:51,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 18:29:51,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 18:29:51,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2020-10-14 18:29:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 18:29:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2020-10-14 18:29:51,151 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 63 [2020-10-14 18:29:51,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:51,152 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2020-10-14 18:29:51,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:29:51,152 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2020-10-14 18:29:51,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 18:29:51,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:51,153 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:51,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:29:51,154 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:51,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:51,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1736303652, now seen corresponding path program 2 times [2020-10-14 18:29:51,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:51,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576897451] [2020-10-14 18:29:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:51,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:51,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:51,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 18:29:51,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 18:29:51,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:51,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 18:29:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:29:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:51,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:51,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:51,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:51,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:51,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:51,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:51,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:51,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:51,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:51,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:51,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:51,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:51,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:51,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:51,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:51,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:51,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:51,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:51,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:51,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:51,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:51,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:51,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:51,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:51,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:51,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:51,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:29:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:51,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:51,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:51,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:51,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:51,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:51,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:51,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:51,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:51,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:51,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:51,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:29:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:51,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:51,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:51,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:51,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:51,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 18:29:51,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576897451] [2020-10-14 18:29:51,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:51,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:29:51,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35618327] [2020-10-14 18:29:51,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:29:51,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:51,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:29:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:29:51,310 INFO L87 Difference]: Start difference. First operand 166 states and 202 transitions. Second operand 4 states. [2020-10-14 18:29:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:51,507 INFO L93 Difference]: Finished difference Result 204 states and 245 transitions. [2020-10-14 18:29:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:29:51,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 18:29:51,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:51,509 INFO L225 Difference]: With dead ends: 204 [2020-10-14 18:29:51,510 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 18:29:51,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 18:29:51,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 18:29:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 155. [2020-10-14 18:29:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 18:29:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 187 transitions. [2020-10-14 18:29:51,546 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 187 transitions. Word has length 63 [2020-10-14 18:29:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:51,546 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 187 transitions. [2020-10-14 18:29:51,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:29:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 187 transitions. [2020-10-14 18:29:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 18:29:51,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:51,548 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:51,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:29:51,548 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:51,549 INFO L82 PathProgramCache]: Analyzing trace with hash -713451555, now seen corresponding path program 4 times [2020-10-14 18:29:51,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:51,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672770235] [2020-10-14 18:29:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:51,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:51,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 18:29:51,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:51,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 18:29:51,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:51,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 18:29:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 18:29:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:52,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:52,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:52,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:52,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:52,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:52,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:52,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:52,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:52,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:52,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:52,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:52,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:52,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:52,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:52,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:52,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:52,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:52,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:52,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:29:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:52,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:52,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:52,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:29:52,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:52,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:52,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:29:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:52,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:52,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:29:52,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:52,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:52,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:52,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:52,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:52,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:29:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:52,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:52,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:52,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:52,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:29:52,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:52,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:52,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:29:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:52,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:52,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:52,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:52,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:29:52,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:52,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 18:29:52,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672770235] [2020-10-14 18:29:52,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:52,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 18:29:52,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678383121] [2020-10-14 18:29:52,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 18:29:52,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:52,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 18:29:52,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:29:52,175 INFO L87 Difference]: Start difference. First operand 155 states and 187 transitions. Second operand 11 states. [2020-10-14 18:29:53,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:53,655 INFO L93 Difference]: Finished difference Result 304 states and 363 transitions. [2020-10-14 18:29:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:29:53,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-14 18:29:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:53,657 INFO L225 Difference]: With dead ends: 304 [2020-10-14 18:29:53,657 INFO L226 Difference]: Without dead ends: 288 [2020-10-14 18:29:53,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2020-10-14 18:29:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-14 18:29:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 168. [2020-10-14 18:29:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-14 18:29:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 203 transitions. [2020-10-14 18:29:53,691 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 203 transitions. Word has length 65 [2020-10-14 18:29:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:53,691 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 203 transitions. [2020-10-14 18:29:53,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 18:29:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 203 transitions. [2020-10-14 18:29:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 18:29:53,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:53,694 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:53,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:29:53,695 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:53,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1214821147, now seen corresponding path program 1 times [2020-10-14 18:29:53,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:53,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757969615] [2020-10-14 18:29:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:54,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 18:29:54,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 18:29:54,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:54,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:29:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 18:29:54,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:54,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:54,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:54,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:54,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:54,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:54,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:54,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:54,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:54,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:54,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:54,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:54,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:54,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:54,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:29:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:54,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:54,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:54,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:54,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:54,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:54,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:54,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:54,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:54,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:29:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:54,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:54,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:54,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:54,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:54,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:54,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:54,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:54,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:29:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:54,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:54,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:54,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:54,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:54,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:54,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:54,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:54,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:54,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:29:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:54,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:54,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:54,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:54,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:54,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:54,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:54,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:54,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:54,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 18:29:54,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757969615] [2020-10-14 18:29:54,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:54,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:29:54,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906098594] [2020-10-14 18:29:54,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:29:54,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:54,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:29:54,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:29:54,226 INFO L87 Difference]: Start difference. First operand 168 states and 203 transitions. Second operand 13 states. [2020-10-14 18:29:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:55,740 INFO L93 Difference]: Finished difference Result 302 states and 358 transitions. [2020-10-14 18:29:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:29:55,741 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-10-14 18:29:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:55,743 INFO L225 Difference]: With dead ends: 302 [2020-10-14 18:29:55,743 INFO L226 Difference]: Without dead ends: 300 [2020-10-14 18:29:55,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 18:29:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-14 18:29:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 207. [2020-10-14 18:29:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 18:29:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 250 transitions. [2020-10-14 18:29:55,776 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 250 transitions. Word has length 65 [2020-10-14 18:29:55,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:55,776 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 250 transitions. [2020-10-14 18:29:55,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:29:55,777 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 250 transitions. [2020-10-14 18:29:55,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 18:29:55,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:55,778 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:55,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:29:55,779 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:55,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:55,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1260730203, now seen corresponding path program 1 times [2020-10-14 18:29:55,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:55,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504764953] [2020-10-14 18:29:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:55,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:55,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 18:29:55,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:55,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 18:29:55,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:55,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 18:29:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:29:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:55,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:55,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:55,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:55,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:55,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:55,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:55,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:55,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:55,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:55,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:55,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:55,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:55,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:55,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:55,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:55,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:55,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:55,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:55,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:55,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:55,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:29:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:55,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:55,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:55,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:55,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:55,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:55,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:55,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:29:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:55,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:55,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:55,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:55,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:55,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:55,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:55,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:29:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:55,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:55,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:55,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:55,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:55,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:55,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 18:29:55,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504764953] [2020-10-14 18:29:55,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:55,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:29:55,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500850250] [2020-10-14 18:29:55,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:29:55,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:55,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:29:55,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:29:55,904 INFO L87 Difference]: Start difference. First operand 207 states and 250 transitions. Second operand 4 states. [2020-10-14 18:29:56,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:56,023 INFO L93 Difference]: Finished difference Result 254 states and 306 transitions. [2020-10-14 18:29:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:29:56,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-14 18:29:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:56,025 INFO L225 Difference]: With dead ends: 254 [2020-10-14 18:29:56,025 INFO L226 Difference]: Without dead ends: 213 [2020-10-14 18:29:56,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 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 18:29:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-14 18:29:56,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2020-10-14 18:29:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-14 18:29:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 248 transitions. [2020-10-14 18:29:56,057 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 248 transitions. Word has length 72 [2020-10-14 18:29:56,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:56,057 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 248 transitions. [2020-10-14 18:29:56,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:29:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 248 transitions. [2020-10-14 18:29:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 18:29:56,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:56,059 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:56,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:29:56,059 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:56,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:56,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1549865065, now seen corresponding path program 2 times [2020-10-14 18:29:56,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:56,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133293330] [2020-10-14 18:29:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:56,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:56,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 18:29:56,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:56,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 18:29:56,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:56,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 18:29:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 18:29:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:56,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:56,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:56,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:56,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:56,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:56,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:56,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:56,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:56,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:56,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:56,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:56,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:56,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:56,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:56,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:56,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:56,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:56,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:56,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:56,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:56,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:56,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:56,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:56,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:56,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:56,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:56,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:56,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:56,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:56,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:56,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:29:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:56,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:56,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:56,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:56,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:56,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:56,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:56,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:56,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:56,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:56,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:29:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:56,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:56,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:56,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:56,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:56,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:56,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:56,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:29:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:56,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:56,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:56,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:56,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:56,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:56,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:56,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-14 18:29:56,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133293330] [2020-10-14 18:29:56,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:29:56,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:29:56,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206025485] [2020-10-14 18:29:56,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:29:56,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:56,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:29:56,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:29:56,211 INFO L87 Difference]: Start difference. First operand 207 states and 248 transitions. Second operand 4 states. [2020-10-14 18:29:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:56,362 INFO L93 Difference]: Finished difference Result 252 states and 300 transitions. [2020-10-14 18:29:56,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:29:56,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-14 18:29:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:56,364 INFO L225 Difference]: With dead ends: 252 [2020-10-14 18:29:56,365 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 18:29:56,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 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 18:29:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 18:29:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 199. [2020-10-14 18:29:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 18:29:56,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2020-10-14 18:29:56,401 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 72 [2020-10-14 18:29:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:56,401 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2020-10-14 18:29:56,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:29:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2020-10-14 18:29:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 18:29:56,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:56,403 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:56,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:29:56,403 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:56,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:56,404 INFO L82 PathProgramCache]: Analyzing trace with hash 831714188, now seen corresponding path program 5 times [2020-10-14 18:29:56,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:56,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009549356] [2020-10-14 18:29:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:56,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:57,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:57,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 18:29:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:29:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-14 18:29:57,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:57,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:57,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:29:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:29:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 18:29:57,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:57,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:57,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:57,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:57,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:57,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:57,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:57,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:57,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:57,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:57,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:57,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:57,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:57,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:57,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:29:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:29:57,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:57,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:57,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 18:29:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:57,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:57,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:57,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:57,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:57,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:57,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:57,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:57,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 18:29:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:57,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:57,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:57,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:57,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:57,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:57,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:57,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:57,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:57,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 18:29:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:57,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:57,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:57,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:57,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:57,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:57,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:57,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:57,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 18:29:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:57,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:57,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:57,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:57,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:57,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:57,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:57,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:57,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 18:29:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:57,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:57,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:57,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:57,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:57,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:57,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:57,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:57,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:57,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 75 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:29:57,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009549356] [2020-10-14 18:29:57,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:57,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:29:57,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105038614] [2020-10-14 18:29:57,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:29:57,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:57,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:29:57,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:29:57,236 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand 13 states. [2020-10-14 18:29:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:57,879 INFO L93 Difference]: Finished difference Result 394 states and 467 transitions. [2020-10-14 18:29:57,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:29:57,880 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 74 [2020-10-14 18:29:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:57,881 INFO L225 Difference]: With dead ends: 394 [2020-10-14 18:29:57,881 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 18:29:57,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:29:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 18:29:57,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 217. [2020-10-14 18:29:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-14 18:29:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 256 transitions. [2020-10-14 18:29:57,940 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 256 transitions. Word has length 74 [2020-10-14 18:29:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:57,941 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 256 transitions. [2020-10-14 18:29:57,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:29:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 256 transitions. [2020-10-14 18:29:57,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 18:29:57,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:57,942 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 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 18:29:57,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:29:57,943 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:57,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:57,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1530886466, now seen corresponding path program 6 times [2020-10-14 18:29:57,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:57,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264330100] [2020-10-14 18:29:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:58,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:58,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 18:29:58,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 18:29:58,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:58,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:29:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 18:29:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:58,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:58,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:58,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:58,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:58,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:58,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:58,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:58,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:58,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:58,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:58,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:58,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:58,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:58,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:58,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:58,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:58,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:58,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:29:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:58,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:58,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:58,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:58,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:58,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:58,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:58,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:29:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:58,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:58,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:58,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:58,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:58,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:29:58,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:58,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:58,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:29:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:58,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:58,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:58,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:58,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:58,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:58,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:58,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:29:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:58,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:58,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:58,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:58,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:58,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:58,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:58,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:29:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:58,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:58,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:58,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:58,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:58,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:58,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:58,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 15 proven. 69 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:29:58,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264330100] [2020-10-14 18:29:58,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:58,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:29:58,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809902851] [2020-10-14 18:29:58,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:29:58,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:58,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:29:58,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:29:58,620 INFO L87 Difference]: Start difference. First operand 217 states and 256 transitions. Second operand 14 states. [2020-10-14 18:30:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:00,878 INFO L93 Difference]: Finished difference Result 405 states and 470 transitions. [2020-10-14 18:30:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 18:30:00,879 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-10-14 18:30:00,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:00,882 INFO L225 Difference]: With dead ends: 405 [2020-10-14 18:30:00,882 INFO L226 Difference]: Without dead ends: 389 [2020-10-14 18:30:00,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=460, Invalid=2620, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 18:30:00,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-14 18:30:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 243. [2020-10-14 18:30:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-14 18:30:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 289 transitions. [2020-10-14 18:30:00,936 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 289 transitions. Word has length 81 [2020-10-14 18:30:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:00,936 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 289 transitions. [2020-10-14 18:30:00,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:30:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 289 transitions. [2020-10-14 18:30:00,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 18:30:00,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:00,938 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 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 18:30:00,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:30:00,939 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:00,939 INFO L82 PathProgramCache]: Analyzing trace with hash -869290814, now seen corresponding path program 1 times [2020-10-14 18:30:00,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:00,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343083761] [2020-10-14 18:30:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:00,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:01,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:05,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:05,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 18:30:05,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:30:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 18:30:05,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:05,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:30:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:05,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 18:30:05,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:06,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:06,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:06,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:06,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:06,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:06,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:30:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:06,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:06,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:06,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:06,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:06,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:06,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:30:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:06,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:06,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:06,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:30:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:06,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:06,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:06,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:06,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:06,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:06,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:06,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:06,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:06,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:30:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:06,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:06,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:06,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:06,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:30:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:06,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:06,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:06,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:06,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:06,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:06,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:06,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:06,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:30:06,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:06,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 36 proven. 47 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-14 18:30:06,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343083761] [2020-10-14 18:30:06,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:06,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:30:06,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136454466] [2020-10-14 18:30:06,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:30:06,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:06,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:30:06,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:30:06,403 INFO L87 Difference]: Start difference. First operand 243 states and 289 transitions. Second operand 14 states. [2020-10-14 18:30:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:08,178 INFO L93 Difference]: Finished difference Result 326 states and 384 transitions. [2020-10-14 18:30:08,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:30:08,178 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-10-14 18:30:08,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:08,180 INFO L225 Difference]: With dead ends: 326 [2020-10-14 18:30:08,180 INFO L226 Difference]: Without dead ends: 310 [2020-10-14 18:30:08,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:30:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-14 18:30:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 243. [2020-10-14 18:30:08,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-14 18:30:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2020-10-14 18:30:08,225 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 81 [2020-10-14 18:30:08,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:08,226 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2020-10-14 18:30:08,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:30:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2020-10-14 18:30:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 18:30:08,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:08,228 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 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] [2020-10-14 18:30:08,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:30:08,228 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:08,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:08,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1880408064, now seen corresponding path program 2 times [2020-10-14 18:30:08,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:08,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084292998] [2020-10-14 18:30:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:08,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 18:30:13,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:30:13,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 18:30:13,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:30:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:30:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 18:30:13,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:13,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:13,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:13,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:13,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:13,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:30:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:13,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:13,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:13,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:13,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:13,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:30:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:13,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:13,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:13,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:13,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:13,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:30:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:13,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:13,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:13,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:13,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:13,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:13,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:13,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:13,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:13,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:13,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:13,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:13,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:30:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:13,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:13,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:30:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:13,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:13,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:13,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:13,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:13,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:13,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:13,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:13,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:13,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 10 proven. 74 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 18:30:13,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084292998] [2020-10-14 18:30:13,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:13,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:30:13,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793229282] [2020-10-14 18:30:13,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:30:13,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:13,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:30:13,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:30:13,538 INFO L87 Difference]: Start difference. First operand 243 states and 288 transitions. Second operand 16 states. [2020-10-14 18:30:16,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:16,056 INFO L93 Difference]: Finished difference Result 395 states and 457 transitions. [2020-10-14 18:30:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 18:30:16,057 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 81 [2020-10-14 18:30:16,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:16,060 INFO L225 Difference]: With dead ends: 395 [2020-10-14 18:30:16,060 INFO L226 Difference]: Without dead ends: 393 [2020-10-14 18:30:16,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=384, Invalid=2478, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 18:30:16,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-14 18:30:16,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 252. [2020-10-14 18:30:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-14 18:30:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 298 transitions. [2020-10-14 18:30:16,107 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 298 transitions. Word has length 81 [2020-10-14 18:30:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:16,107 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 298 transitions. [2020-10-14 18:30:16,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:30:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 298 transitions. [2020-10-14 18:30:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 18:30:16,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:16,109 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 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 18:30:16,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:30:16,110 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:16,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:16,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1188287431, now seen corresponding path program 7 times [2020-10-14 18:30:16,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:16,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954091809] [2020-10-14 18:30:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 18:30:16,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-14 18:30:16,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:30:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:30:16,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 18:30:16,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:16,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:16,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:16,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:16,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:16,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:30:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:16,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:16,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:16,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:30:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:16,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:16,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:30:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:16,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:16,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:16,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:16,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:16,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:16,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:16,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:30:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:16,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:16,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:30:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:16,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:16,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:16,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:16,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:16,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:30:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:16,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:16,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:16,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:16,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:16,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:16,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:16,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:16,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 18 proven. 96 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 18:30:16,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954091809] [2020-10-14 18:30:16,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:16,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:30:16,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087228835] [2020-10-14 18:30:16,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:30:16,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:16,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:30:16,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:30:16,739 INFO L87 Difference]: Start difference. First operand 252 states and 298 transitions. Second operand 15 states. [2020-10-14 18:30:19,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:19,184 INFO L93 Difference]: Finished difference Result 443 states and 517 transitions. [2020-10-14 18:30:19,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-14 18:30:19,185 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-10-14 18:30:19,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:19,189 INFO L225 Difference]: With dead ends: 443 [2020-10-14 18:30:19,189 INFO L226 Difference]: Without dead ends: 427 [2020-10-14 18:30:19,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=484, Invalid=2822, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 18:30:19,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-14 18:30:19,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 279. [2020-10-14 18:30:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-14 18:30:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 334 transitions. [2020-10-14 18:30:19,234 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 334 transitions. Word has length 90 [2020-10-14 18:30:19,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:19,235 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 334 transitions. [2020-10-14 18:30:19,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:30:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 334 transitions. [2020-10-14 18:30:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 18:30:19,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:19,236 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 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] [2020-10-14 18:30:19,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 18:30:19,237 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:19,237 INFO L82 PathProgramCache]: Analyzing trace with hash -889059767, now seen corresponding path program 1 times [2020-10-14 18:30:19,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:19,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617589611] [2020-10-14 18:30:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:19,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:19,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:21,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:24,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:24,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 18:30:24,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:30:24,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 18:30:24,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:24,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:30:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 18:30:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:24,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:24,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:24,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:24,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:24,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:24,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:24,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:24,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:24,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:30:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:24,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:24,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:24,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:24,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:24,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:30:24,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:24,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:24,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:30:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:24,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:24,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:24,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:24,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:24,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:24,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:30:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:24,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:24,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:24,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:24,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:24,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:24,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:24,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:24,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:24,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:24,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:24,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:24,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:24,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:24,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:24,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:30:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:24,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:24,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:24,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:24,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:24,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:24,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:24,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:24,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:30:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:24,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:24,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:24,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:24,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:24,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:24,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:24,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:24,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:30:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:24,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:24,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:24,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:24,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:24,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:24,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:24,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:30:24,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:24,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 44 proven. 69 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-14 18:30:24,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617589611] [2020-10-14 18:30:24,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:24,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:30:24,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656666987] [2020-10-14 18:30:24,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:30:24,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:24,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:30:24,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:30:24,667 INFO L87 Difference]: Start difference. First operand 279 states and 334 transitions. Second operand 16 states. [2020-10-14 18:30:26,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:26,803 INFO L93 Difference]: Finished difference Result 392 states and 458 transitions. [2020-10-14 18:30:26,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:30:26,804 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-10-14 18:30:26,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:26,808 INFO L225 Difference]: With dead ends: 392 [2020-10-14 18:30:26,808 INFO L226 Difference]: Without dead ends: 376 [2020-10-14 18:30:26,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:30:26,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-14 18:30:26,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 279. [2020-10-14 18:30:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-14 18:30:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 333 transitions. [2020-10-14 18:30:26,876 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 333 transitions. Word has length 90 [2020-10-14 18:30:26,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:26,877 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 333 transitions. [2020-10-14 18:30:26,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:30:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 333 transitions. [2020-10-14 18:30:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 18:30:26,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:26,888 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 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] [2020-10-14 18:30:26,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 18:30:26,888 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:26,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:26,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1900177017, now seen corresponding path program 2 times [2020-10-14 18:30:26,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:26,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749025926] [2020-10-14 18:30:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:31,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:31,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 18:30:31,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 18:30:31,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:30:31,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:31,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:30:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 18:30:31,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:32,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:32,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:32,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:32,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:32,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:32,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:32,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:30:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:32,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:32,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:32,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:32,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:32,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:32,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:32,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:32,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:32,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:30:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:32,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:32,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:32,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:32,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:32,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:32,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:32,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:32,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:32,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:32,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:30:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:32,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:32,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:32,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:32,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:32,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:32,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:32,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:32,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:32,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:32,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:32,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:32,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:32,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:32,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:32,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:32,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:32,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:32,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:32,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:32,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:32,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:30:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:32,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:32,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:32,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:32,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:32,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:32,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:30:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:32,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:30:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:32,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:32,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:32,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:32,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:32,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:32,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:32,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:32,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:30:32,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:32,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:30:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:32,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:32,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:32,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:32,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:32,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:32,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:30:32,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:30:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 66 proven. 30 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 18:30:32,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749025926] [2020-10-14 18:30:32,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:32,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:30:32,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424759134] [2020-10-14 18:30:32,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:30:32,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:32,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:30:32,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:30:32,330 INFO L87 Difference]: Start difference. First operand 279 states and 333 transitions. Second operand 15 states. [2020-10-14 18:30:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:33,574 INFO L93 Difference]: Finished difference Result 358 states and 425 transitions. [2020-10-14 18:30:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:30:33,575 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-10-14 18:30:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:33,577 INFO L225 Difference]: With dead ends: 358 [2020-10-14 18:30:33,577 INFO L226 Difference]: Without dead ends: 323 [2020-10-14 18:30:33,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:30:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-14 18:30:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 278. [2020-10-14 18:30:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-14 18:30:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 330 transitions. [2020-10-14 18:30:33,626 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 330 transitions. Word has length 90 [2020-10-14 18:30:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:33,626 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 330 transitions. [2020-10-14 18:30:33,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:30:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 330 transitions. [2020-10-14 18:30:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 18:30:33,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:33,628 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 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] [2020-10-14 18:30:33,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 18:30:33,629 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:33,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:33,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1625417403, now seen corresponding path program 3 times [2020-10-14 18:30:33,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:33,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047418446] [2020-10-14 18:30:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:33,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:33,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:33,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:33,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:35,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:35,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:38,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 18:30:38,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 18:30:38,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:30:38,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:38,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:38,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:30:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:30:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 18:30:38,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:38,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:38,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:38,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:38,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:38,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:38,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:38,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:30:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:38,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:38,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:38,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:38,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:38,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:38,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:38,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:38,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:38,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:30:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:38,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:38,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:38,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:38,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:38,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:30:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:38,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:38,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:38,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:38,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:38,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:38,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:38,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:38,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:38,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:38,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:38,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:38,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:38,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:38,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:30:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:38,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:38,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:30:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:38,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:38,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:38,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:38,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:38,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:38,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:38,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:38,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:30:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:38,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:38,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:38,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:38,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:38,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:38,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:38,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:38,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 12 proven. 102 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 18:30:38,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047418446] [2020-10-14 18:30:38,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:38,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:30:38,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608643549] [2020-10-14 18:30:38,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:30:38,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:38,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:30:38,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:30:38,952 INFO L87 Difference]: Start difference. First operand 278 states and 330 transitions. Second operand 17 states. [2020-10-14 18:30:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:41,754 INFO L93 Difference]: Finished difference Result 431 states and 500 transitions. [2020-10-14 18:30:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 18:30:41,756 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 90 [2020-10-14 18:30:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:41,759 INFO L225 Difference]: With dead ends: 431 [2020-10-14 18:30:41,759 INFO L226 Difference]: Without dead ends: 429 [2020-10-14 18:30:41,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=388, Invalid=2692, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 18:30:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-10-14 18:30:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 287. [2020-10-14 18:30:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-14 18:30:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 340 transitions. [2020-10-14 18:30:41,821 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 340 transitions. Word has length 90 [2020-10-14 18:30:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:41,822 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 340 transitions. [2020-10-14 18:30:41,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:30:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 340 transitions. [2020-10-14 18:30:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 18:30:41,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:41,825 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 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 18:30:41,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 18:30:41,826 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:41,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:41,826 INFO L82 PathProgramCache]: Analyzing trace with hash -575897886, now seen corresponding path program 8 times [2020-10-14 18:30:41,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:41,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292879882] [2020-10-14 18:30:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:41,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 18:30:42,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 18:30:42,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:30:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:30:42,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 18:30:42,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:42,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:42,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:42,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:42,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:30:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:42,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:42,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:42,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:42,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:30:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:42,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:42,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:42,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:30:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:42,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:42,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:42,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:42,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:42,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:30:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:42,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:42,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:42,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:42,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:42,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:30:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:42,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:42,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:42,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:42,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:30:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:42,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:42,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:42,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:42,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:42,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:30:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:42,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:42,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:42,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:42,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:42,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:42,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:42,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:42,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 21 proven. 128 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 18:30:42,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292879882] [2020-10-14 18:30:42,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:42,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:30:42,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483472271] [2020-10-14 18:30:42,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:30:42,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:42,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:30:42,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:30:42,389 INFO L87 Difference]: Start difference. First operand 287 states and 340 transitions. Second operand 16 states. [2020-10-14 18:30:45,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:45,874 INFO L93 Difference]: Finished difference Result 501 states and 583 transitions. [2020-10-14 18:30:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-14 18:30:45,875 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-10-14 18:30:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:45,879 INFO L225 Difference]: With dead ends: 501 [2020-10-14 18:30:45,879 INFO L226 Difference]: Without dead ends: 485 [2020-10-14 18:30:45,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=715, Invalid=4115, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 18:30:45,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-10-14 18:30:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 313. [2020-10-14 18:30:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-14 18:30:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 373 transitions. [2020-10-14 18:30:45,932 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 373 transitions. Word has length 99 [2020-10-14 18:30:45,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:45,933 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 373 transitions. [2020-10-14 18:30:45,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:30:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 373 transitions. [2020-10-14 18:30:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 18:30:45,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:45,935 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 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] [2020-10-14 18:30:45,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 18:30:45,936 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:45,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:45,936 INFO L82 PathProgramCache]: Analyzing trace with hash 84193508, now seen corresponding path program 1 times [2020-10-14 18:30:45,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:45,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151935662] [2020-10-14 18:30:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:46,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:47,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:48,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:49,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:50,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:50,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 18:30:50,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 18:30:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:30:50,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:50,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:30:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:30:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 18:30:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:51,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:51,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:51,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:51,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:51,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:51,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:51,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:51,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:30:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:51,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:51,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:30:51,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:51,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:51,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:30:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:51,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:51,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:51,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:51,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:51,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:51,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:30:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:51,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:51,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:51,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:51,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:51,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:51,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:51,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:51,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:51,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:51,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:51,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:51,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:51,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:51,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:30:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:51,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:51,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:51,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:51,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:51,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:51,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:51,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:51,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:30:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:51,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:51,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:51,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:51,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:51,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:30:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:51,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:51,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:51,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:51,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:51,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:51,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:51,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:51,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:30:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:51,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:51,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:51,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:51,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:51,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:30:51,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:51,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:51,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:51,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:30:51,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:51,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 52 proven. 96 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 18:30:51,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151935662] [2020-10-14 18:30:51,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:51,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:30:51,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598454708] [2020-10-14 18:30:51,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:30:51,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:51,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:30:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:30:51,310 INFO L87 Difference]: Start difference. First operand 313 states and 373 transitions. Second operand 17 states. [2020-10-14 18:30:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:30:53,512 INFO L93 Difference]: Finished difference Result 413 states and 482 transitions. [2020-10-14 18:30:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:30:53,513 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 99 [2020-10-14 18:30:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:30:53,515 INFO L225 Difference]: With dead ends: 413 [2020-10-14 18:30:53,515 INFO L226 Difference]: Without dead ends: 397 [2020-10-14 18:30:53,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=959, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:30:53,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-14 18:30:53,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 313. [2020-10-14 18:30:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-14 18:30:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 372 transitions. [2020-10-14 18:30:53,560 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 372 transitions. Word has length 99 [2020-10-14 18:30:53,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:30:53,561 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 372 transitions. [2020-10-14 18:30:53,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:30:53,561 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 372 transitions. [2020-10-14 18:30:53,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 18:30:53,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:30:53,563 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 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] [2020-10-14 18:30:53,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 18:30:53,563 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:30:53,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:30:53,564 INFO L82 PathProgramCache]: Analyzing trace with hash -926923742, now seen corresponding path program 2 times [2020-10-14 18:30:53,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:30:53,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339337780] [2020-10-14 18:30:53,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:30:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:53,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:54,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:55,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:55,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:55,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:55,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:56,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:57,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:57,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:58,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 18:30:58,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 18:30:58,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:30:58,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:58,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:58,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:30:58,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:30:58,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 18:30:58,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:58,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:30:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:58,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:58,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:30:58,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:58,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:58,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:58,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:58,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:58,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:58,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:58,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:58,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:30:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:58,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:58,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:58,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:58,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:30:58,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:58,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:30:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:58,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:30:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:58,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:30:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:58,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:58,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:30:58,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:58,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:58,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:30:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:58,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:58,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:58,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:58,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:58,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:30:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:58,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:58,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:58,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:58,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:58,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:58,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:58,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:58,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:30:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:58,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:58,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:58,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:58,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:58,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:58,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:58,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:58,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:58,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:58,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:30:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:58,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:58,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:58,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:58,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:58,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:58,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:58,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:58,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:58,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:58,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:30:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:58,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:58,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:58,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:58,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:58,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:30:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:30:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:30:58,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:30:58,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:30:58,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:30:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:30:58,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:30:58,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:30:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:30:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:30:58,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:30:58,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:30:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 14 proven. 135 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 18:30:58,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339337780] [2020-10-14 18:30:58,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:30:58,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:30:58,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669170057] [2020-10-14 18:30:58,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:30:58,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:30:58,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:30:58,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:30:58,921 INFO L87 Difference]: Start difference. First operand 313 states and 372 transitions. Second operand 18 states. [2020-10-14 18:31:02,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:02,345 INFO L93 Difference]: Finished difference Result 475 states and 552 transitions. [2020-10-14 18:31:02,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-14 18:31:02,347 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 99 [2020-10-14 18:31:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:02,350 INFO L225 Difference]: With dead ends: 475 [2020-10-14 18:31:02,350 INFO L226 Difference]: Without dead ends: 473 [2020-10-14 18:31:02,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=468, Invalid=3438, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 18:31:02,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-10-14 18:31:02,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 322. [2020-10-14 18:31:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-14 18:31:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 382 transitions. [2020-10-14 18:31:02,416 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 382 transitions. Word has length 99 [2020-10-14 18:31:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:02,416 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 382 transitions. [2020-10-14 18:31:02,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:31:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 382 transitions. [2020-10-14 18:31:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 18:31:02,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:02,418 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 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 18:31:02,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 18:31:02,419 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:02,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:02,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1277370919, now seen corresponding path program 9 times [2020-10-14 18:31:02,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:02,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050515030] [2020-10-14 18:31:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:02,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:02,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:31:02,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:02,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-14 18:31:02,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:02,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:31:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:31:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 18:31:02,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:02,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:02,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:02,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:02,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:02,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:31:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:02,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:02,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:02,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:02,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:02,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:02,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:31:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:02,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:02,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:02,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:02,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:02,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:02,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:02,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:02,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:02,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:02,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:02,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:31:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:02,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:02,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:02,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:02,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:02,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:02,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:02,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:02,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:02,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:02,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:02,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:02,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:31:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:02,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:02,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:02,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:02,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:02,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:31:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:03,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:31:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:03,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:31:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:03,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:03,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:03,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:03,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:03,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:03,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:03,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:03,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:03,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 24 proven. 165 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 18:31:03,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050515030] [2020-10-14 18:31:03,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:03,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:31:03,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403046602] [2020-10-14 18:31:03,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:31:03,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:03,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:31:03,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:31:03,041 INFO L87 Difference]: Start difference. First operand 322 states and 382 transitions. Second operand 17 states. [2020-10-14 18:31:06,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:06,701 INFO L93 Difference]: Finished difference Result 537 states and 626 transitions. [2020-10-14 18:31:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-14 18:31:06,703 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 108 [2020-10-14 18:31:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:06,706 INFO L225 Difference]: With dead ends: 537 [2020-10-14 18:31:06,706 INFO L226 Difference]: Without dead ends: 521 [2020-10-14 18:31:06,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=680, Invalid=4432, Unknown=0, NotChecked=0, Total=5112 [2020-10-14 18:31:06,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-10-14 18:31:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 338. [2020-10-14 18:31:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-14 18:31:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 403 transitions. [2020-10-14 18:31:06,776 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 403 transitions. Word has length 108 [2020-10-14 18:31:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:06,776 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 403 transitions. [2020-10-14 18:31:06,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:31:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 403 transitions. [2020-10-14 18:31:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 18:31:06,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:06,778 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 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] [2020-10-14 18:31:06,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 18:31:06,779 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:06,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1438089623, now seen corresponding path program 1 times [2020-10-14 18:31:06,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:06,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034610678] [2020-10-14 18:31:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:10,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:11,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:11,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:31:11,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 18:31:11,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:31:11,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:11,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:31:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:11,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 18:31:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:12,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:12,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:12,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:12,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:12,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:31:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:12,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:12,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:12,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:12,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:31:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:12,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:12,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:12,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:12,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:31:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:12,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:12,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:12,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:12,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:12,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:12,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:12,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:12,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:12,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:12,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:12,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:12,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:31:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:12,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:12,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:12,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:12,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:12,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:12,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:31:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:12,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:12,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:12,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:12,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:12,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:12,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:12,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:31:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:12,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:12,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:31:12,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:12,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:31:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:31:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:12,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:12,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:12,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:12,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:12,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:31:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 102 proven. 69 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-14 18:31:12,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034610678] [2020-10-14 18:31:12,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:12,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:31:12,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963363575] [2020-10-14 18:31:12,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:31:12,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:12,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:31:12,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:31:12,179 INFO L87 Difference]: Start difference. First operand 338 states and 403 transitions. Second operand 16 states. [2020-10-14 18:31:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:14,549 INFO L93 Difference]: Finished difference Result 489 states and 571 transitions. [2020-10-14 18:31:14,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:31:14,550 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-10-14 18:31:14,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:14,553 INFO L225 Difference]: With dead ends: 489 [2020-10-14 18:31:14,553 INFO L226 Difference]: Without dead ends: 463 [2020-10-14 18:31:14,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:31:14,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-14 18:31:14,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 338. [2020-10-14 18:31:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-14 18:31:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 402 transitions. [2020-10-14 18:31:14,617 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 402 transitions. Word has length 108 [2020-10-14 18:31:14,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:14,617 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 402 transitions. [2020-10-14 18:31:14,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:31:14,617 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 402 transitions. [2020-10-14 18:31:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 18:31:14,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:14,619 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 6, 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] [2020-10-14 18:31:14,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 18:31:14,620 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:14,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1163330009, now seen corresponding path program 2 times [2020-10-14 18:31:14,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:14,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548366151] [2020-10-14 18:31:14,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:14,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:14,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:14,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:15,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:31:19,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 18:31:19,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 18:31:19,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:31:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:31:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 18:31:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:19,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:19,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:19,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:19,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:31:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:31:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:19,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:19,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:19,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:19,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:31:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:19,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:19,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:19,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:19,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:19,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:19,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:19,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:31:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:19,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:19,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:19,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:31:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:31:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:31:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:19,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:31:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:31:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:31:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:19,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:31:19,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:31:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:19,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:19,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:31:19,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:31:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:31:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:19,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:19,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:19,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:19,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:31:19,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:19,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:31:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 115 proven. 43 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-10-14 18:31:19,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548366151] [2020-10-14 18:31:19,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:19,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:31:19,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867219827] [2020-10-14 18:31:19,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:31:20,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:20,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:31:20,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:31:20,000 INFO L87 Difference]: Start difference. First operand 338 states and 402 transitions. Second operand 15 states. [2020-10-14 18:31:21,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:21,066 INFO L93 Difference]: Finished difference Result 416 states and 487 transitions. [2020-10-14 18:31:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:31:21,067 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 108 [2020-10-14 18:31:21,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:21,069 INFO L225 Difference]: With dead ends: 416 [2020-10-14 18:31:21,069 INFO L226 Difference]: Without dead ends: 372 [2020-10-14 18:31:21,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:31:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-10-14 18:31:21,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 337. [2020-10-14 18:31:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-14 18:31:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 399 transitions. [2020-10-14 18:31:21,137 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 399 transitions. Word has length 108 [2020-10-14 18:31:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:21,137 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 399 transitions. [2020-10-14 18:31:21,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:31:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 399 transitions. [2020-10-14 18:31:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 18:31:21,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:21,140 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 4, 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] [2020-10-14 18:31:21,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 18:31:21,140 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:21,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:21,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1644410267, now seen corresponding path program 3 times [2020-10-14 18:31:21,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:21,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469602788] [2020-10-14 18:31:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:21,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:21,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:21,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:21,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:21,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:21,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:23,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:31:26,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 18:31:26,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:31:26,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:31:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:31:26,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 18:31:26,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:26,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:26,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:26,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:31:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:26,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:26,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:26,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:26,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:26,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:31:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:26,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:26,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:31:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:26,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:26,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:26,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:26,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:26,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:31:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:26,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:26,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:26,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:31:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:26,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:26,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:31:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:26,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:26,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:26,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:26,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:26,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:31:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:26,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:26,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:26,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:26,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:26,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:26,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:26,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:26,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:26,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:26,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:26,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 16 proven. 173 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 18:31:26,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469602788] [2020-10-14 18:31:26,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:26,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:31:26,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774607084] [2020-10-14 18:31:26,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:31:26,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:26,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:31:26,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:31:26,534 INFO L87 Difference]: Start difference. First operand 337 states and 399 transitions. Second operand 19 states. [2020-10-14 18:31:31,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:31,182 INFO L93 Difference]: Finished difference Result 518 states and 601 transitions. [2020-10-14 18:31:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-14 18:31:31,183 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 108 [2020-10-14 18:31:31,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:31,186 INFO L225 Difference]: With dead ends: 518 [2020-10-14 18:31:31,186 INFO L226 Difference]: Without dead ends: 516 [2020-10-14 18:31:31,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=706, Invalid=5300, Unknown=0, NotChecked=0, Total=6006 [2020-10-14 18:31:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-10-14 18:31:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 356. [2020-10-14 18:31:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-14 18:31:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 421 transitions. [2020-10-14 18:31:31,266 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 421 transitions. Word has length 108 [2020-10-14 18:31:31,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:31,266 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 421 transitions. [2020-10-14 18:31:31,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:31:31,266 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 421 transitions. [2020-10-14 18:31:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 18:31:31,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:31,269 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 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 18:31:31,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 18:31:31,269 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:31,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:31,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1564433538, now seen corresponding path program 10 times [2020-10-14 18:31:31,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:31,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916389134] [2020-10-14 18:31:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:31,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:31,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:31,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 18:31:31,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-14 18:31:31,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:31,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:31:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:31:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 18:31:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:32,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:31:32,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:31:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:32,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:32,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:32,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:31:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:32,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:32,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:31:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:32,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:32,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:32,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:32,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:31:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:32,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:32,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:31:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:32,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:32,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:31:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:32,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:32,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:31:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:32,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:32,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 18:31:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:32,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:32,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:32,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:32,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:32,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 27 proven. 207 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 18:31:32,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916389134] [2020-10-14 18:31:32,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:32,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 18:31:32,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412309098] [2020-10-14 18:31:32,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 18:31:32,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:32,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 18:31:32,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 18:31:32,143 INFO L87 Difference]: Start difference. First operand 356 states and 421 transitions. Second operand 17 states. [2020-10-14 18:31:36,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:36,163 INFO L93 Difference]: Finished difference Result 569 states and 661 transitions. [2020-10-14 18:31:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-14 18:31:36,164 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2020-10-14 18:31:36,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:36,168 INFO L225 Difference]: With dead ends: 569 [2020-10-14 18:31:36,168 INFO L226 Difference]: Without dead ends: 553 [2020-10-14 18:31:36,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1617 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=644, Invalid=4758, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 18:31:36,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-10-14 18:31:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 361. [2020-10-14 18:31:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-14 18:31:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 427 transitions. [2020-10-14 18:31:36,232 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 427 transitions. Word has length 117 [2020-10-14 18:31:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:36,232 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 427 transitions. [2020-10-14 18:31:36,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 18:31:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 427 transitions. [2020-10-14 18:31:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 18:31:36,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:36,234 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 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 18:31:36,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 18:31:36,234 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:36,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:36,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2012415554, now seen corresponding path program 2 times [2020-10-14 18:31:36,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:36,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166169747] [2020-10-14 18:31:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:36,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:38,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:38,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:39,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:39,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 18:31:39,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 18:31:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3577 [2020-10-14 18:31:39,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:39,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:31:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:31:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 18:31:39,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:40,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:40,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:40,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:31:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:40,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:40,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:40,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:31:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:40,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:40,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:31:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:40,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:40,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:40,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:31:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:40,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:40,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:40,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:31:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:40,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:40,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:40,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:31:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:40,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:40,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:40,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:31:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:40,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:40,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 18:31:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:40,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:40,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:40,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:40,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:40,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 18 proven. 216 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 18:31:40,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166169747] [2020-10-14 18:31:40,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:40,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:31:40,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713681323] [2020-10-14 18:31:40,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:31:40,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:40,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:31:40,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:31:40,240 INFO L87 Difference]: Start difference. First operand 361 states and 427 transitions. Second operand 19 states. [2020-10-14 18:31:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:45,729 INFO L93 Difference]: Finished difference Result 554 states and 644 transitions. [2020-10-14 18:31:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-14 18:31:45,731 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 117 [2020-10-14 18:31:45,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:45,734 INFO L225 Difference]: With dead ends: 554 [2020-10-14 18:31:45,734 INFO L226 Difference]: Without dead ends: 552 [2020-10-14 18:31:45,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1966 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=707, Invalid=6099, Unknown=0, NotChecked=0, Total=6806 [2020-10-14 18:31:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-10-14 18:31:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 391. [2020-10-14 18:31:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-10-14 18:31:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 463 transitions. [2020-10-14 18:31:45,837 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 463 transitions. Word has length 117 [2020-10-14 18:31:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:45,839 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 463 transitions. [2020-10-14 18:31:45,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:31:45,839 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 463 transitions. [2020-10-14 18:31:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 18:31:45,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:45,842 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 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 18:31:45,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 18:31:45,843 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:45,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:45,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1163892871, now seen corresponding path program 11 times [2020-10-14 18:31:45,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:45,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19162389] [2020-10-14 18:31:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:45,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:46,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:46,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:46,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 18:31:46,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:46,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-14 18:31:46,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:46,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:31:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:31:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 18:31:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:47,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:47,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:47,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:31:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:31:47,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 18:31:47,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 18:31:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 18:31:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 18:31:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 18:31:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 18:31:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 18:31:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 18:31:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 18:31:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-14 18:31:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 18:31:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:47,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:47,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:47,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:47,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:47,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:47,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:47,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:47,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 275 proven. 9 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 18:31:47,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19162389] [2020-10-14 18:31:47,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:47,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:31:47,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978874876] [2020-10-14 18:31:47,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:31:47,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:47,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:31:47,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:31:47,675 INFO L87 Difference]: Start difference. First operand 391 states and 463 transitions. Second operand 19 states. [2020-10-14 18:31:49,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:49,180 INFO L93 Difference]: Finished difference Result 784 states and 923 transitions. [2020-10-14 18:31:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:31:49,181 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 126 [2020-10-14 18:31:49,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:49,184 INFO L225 Difference]: With dead ends: 784 [2020-10-14 18:31:49,184 INFO L226 Difference]: Without dead ends: 469 [2020-10-14 18:31:49,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:31:49,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-14 18:31:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 433. [2020-10-14 18:31:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-14 18:31:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 505 transitions. [2020-10-14 18:31:49,255 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 505 transitions. Word has length 126 [2020-10-14 18:31:49,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:49,255 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 505 transitions. [2020-10-14 18:31:49,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:31:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 505 transitions. [2020-10-14 18:31:49,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 18:31:49,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:49,257 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 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 18:31:49,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 18:31:49,257 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:49,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:49,257 INFO L82 PathProgramCache]: Analyzing trace with hash 385732413, now seen corresponding path program 12 times [2020-10-14 18:31:49,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:49,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148016635] [2020-10-14 18:31:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:49,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:49,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:49,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 18:31:49,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-14 18:31:49,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:49,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:31:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:31:49,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 18:31:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:50,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:31:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:31:50,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:31:50,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:50,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:50,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:31:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:50,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:31:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:31:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:31:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:50,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:50,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:31:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:50,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:50,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:31:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:50,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:31:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:50,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:50,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:31:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:50,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:50,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:31:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:50,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:50,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:31:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:31:50,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:50,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:31:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:50,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:31:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:31:50,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:50,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:31:50,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 18:31:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:50,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:50,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:31:50,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:31:50,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:31:50,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:31:50,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:31:50,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:31:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:31:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:31:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:31:50,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:31:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 30 proven. 269 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 18:31:50,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148016635] [2020-10-14 18:31:50,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:31:50,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:31:50,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224396126] [2020-10-14 18:31:50,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:31:50,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:31:50,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:31:50,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:31:50,665 INFO L87 Difference]: Start difference. First operand 433 states and 505 transitions. Second operand 20 states. [2020-10-14 18:31:57,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:31:57,353 INFO L93 Difference]: Finished difference Result 677 states and 781 transitions. [2020-10-14 18:31:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-10-14 18:31:57,354 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 133 [2020-10-14 18:31:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:31:57,358 INFO L225 Difference]: With dead ends: 677 [2020-10-14 18:31:57,359 INFO L226 Difference]: Without dead ends: 661 [2020-10-14 18:31:57,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1027, Invalid=8675, Unknown=0, NotChecked=0, Total=9702 [2020-10-14 18:31:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-14 18:31:57,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 459. [2020-10-14 18:31:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-14 18:31:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 538 transitions. [2020-10-14 18:31:57,463 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 538 transitions. Word has length 133 [2020-10-14 18:31:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:31:57,464 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 538 transitions. [2020-10-14 18:31:57,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:31:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 538 transitions. [2020-10-14 18:31:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 18:31:57,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:31:57,467 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 9, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:31:57,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 18:31:57,467 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:31:57,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:31:57,468 INFO L82 PathProgramCache]: Analyzing trace with hash 603410107, now seen corresponding path program 3 times [2020-10-14 18:31:57,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:31:57,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255342501] [2020-10-14 18:31:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:31:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:31:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:57,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:57,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:57,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:57,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:31:58,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:00,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:01,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 18:32:02,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 18:32:02,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:32:02,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:32:02,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:32:02,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 18:32:02,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:02,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:32:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:02,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:02,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:02,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:02,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:02,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:02,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:02,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:32:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:03,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:03,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:03,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:03,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:03,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:03,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:03,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:03,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:03,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:32:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:03,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:03,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:03,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:03,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:32:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:03,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:03,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:03,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:03,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:03,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:03,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:03,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:03,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:03,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:03,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:03,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:32:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:03,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:03,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:03,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:03,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:03,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:03,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:32:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:03,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:03,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:03,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:03,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:03,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:03,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:03,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:32:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:03,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:03,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:03,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:03,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:03,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:03,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:03,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:03,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:03,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:03,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:03,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:03,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:03,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:03,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:32:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:03,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:03,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:03,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:03,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 18:32:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:03,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:03,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:03,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:03,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:32:03,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:03,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:03,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:32:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:03,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 76 proven. 222 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-14 18:32:03,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255342501] [2020-10-14 18:32:03,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:03,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:32:03,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666068272] [2020-10-14 18:32:03,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:32:03,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:03,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:32:03,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:32:03,069 INFO L87 Difference]: Start difference. First operand 459 states and 538 transitions. Second operand 20 states. [2020-10-14 18:32:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:07,794 INFO L93 Difference]: Finished difference Result 582 states and 678 transitions. [2020-10-14 18:32:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 18:32:07,795 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 133 [2020-10-14 18:32:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:07,798 INFO L225 Difference]: With dead ends: 582 [2020-10-14 18:32:07,799 INFO L226 Difference]: Without dead ends: 566 [2020-10-14 18:32:07,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=471, Invalid=2499, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 18:32:07,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-10-14 18:32:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 459. [2020-10-14 18:32:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-14 18:32:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 537 transitions. [2020-10-14 18:32:07,890 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 537 transitions. Word has length 133 [2020-10-14 18:32:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:07,890 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 537 transitions. [2020-10-14 18:32:07,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:32:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 537 transitions. [2020-10-14 18:32:07,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 18:32:07,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:07,893 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 8, 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] [2020-10-14 18:32:07,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 18:32:07,893 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:07,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:07,894 INFO L82 PathProgramCache]: Analyzing trace with hash -407707143, now seen corresponding path program 4 times [2020-10-14 18:32:07,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:07,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700459343] [2020-10-14 18:32:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:08,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:08,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:10,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:12,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:12,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:12,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 18:32:12,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 18:32:12,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:32:12,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:12,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:32:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:32:12,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 18:32:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:13,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:13,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:32:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:32:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:32:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:32:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:13,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:32:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:32:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:32:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:32:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 18:32:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:13,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:13,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:13,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:13,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:13,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:13,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:13,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 20 proven. 279 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 18:32:13,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700459343] [2020-10-14 18:32:13,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:13,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:32:13,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913252031] [2020-10-14 18:32:13,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:32:13,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:13,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:32:13,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:32:13,457 INFO L87 Difference]: Start difference. First operand 459 states and 537 transitions. Second operand 22 states. [2020-10-14 18:32:21,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:21,298 INFO L93 Difference]: Finished difference Result 655 states and 755 transitions. [2020-10-14 18:32:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-14 18:32:21,299 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 133 [2020-10-14 18:32:21,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:21,303 INFO L225 Difference]: With dead ends: 655 [2020-10-14 18:32:21,303 INFO L226 Difference]: Without dead ends: 653 [2020-10-14 18:32:21,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3001 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1020, Invalid=8682, Unknown=0, NotChecked=0, Total=9702 [2020-10-14 18:32:21,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-14 18:32:21,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 468. [2020-10-14 18:32:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-14 18:32:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 547 transitions. [2020-10-14 18:32:21,403 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 547 transitions. Word has length 133 [2020-10-14 18:32:21,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:21,403 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 547 transitions. [2020-10-14 18:32:21,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:32:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 547 transitions. [2020-10-14 18:32:21,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 18:32:21,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:21,406 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 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 18:32:21,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 18:32:21,406 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:21,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:21,406 INFO L82 PathProgramCache]: Analyzing trace with hash -949549012, now seen corresponding path program 13 times [2020-10-14 18:32:21,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:21,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158137973] [2020-10-14 18:32:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:21,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:21,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 18:32:21,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-10-14 18:32:21,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:21,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:32:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:32:21,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 18:32:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:22,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:32:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:22,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:32:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:32:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:32:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:32:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:32:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:32:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:22,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:32:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:22,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 18:32:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:22,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 18:32:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:22,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:22,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:22,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:22,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:22,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:22,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 33 proven. 321 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 18:32:22,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158137973] [2020-10-14 18:32:22,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:22,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:32:22,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861166856] [2020-10-14 18:32:22,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:32:22,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:32:22,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:32:22,555 INFO L87 Difference]: Start difference. First operand 468 states and 547 transitions. Second operand 21 states. [2020-10-14 18:32:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:31,292 INFO L93 Difference]: Finished difference Result 731 states and 846 transitions. [2020-10-14 18:32:31,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-10-14 18:32:31,294 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 142 [2020-10-14 18:32:31,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:31,298 INFO L225 Difference]: With dead ends: 731 [2020-10-14 18:32:31,298 INFO L226 Difference]: Without dead ends: 715 [2020-10-14 18:32:31,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4350 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1437, Invalid=11219, Unknown=0, NotChecked=0, Total=12656 [2020-10-14 18:32:31,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-10-14 18:32:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 495. [2020-10-14 18:32:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-10-14 18:32:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 583 transitions. [2020-10-14 18:32:31,382 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 583 transitions. Word has length 142 [2020-10-14 18:32:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:31,383 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 583 transitions. [2020-10-14 18:32:31,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:32:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 583 transitions. [2020-10-14 18:32:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 18:32:31,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:31,385 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 7, 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 18:32:31,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 18:32:31,386 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:31,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1374494224, now seen corresponding path program 4 times [2020-10-14 18:32:31,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:31,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312548394] [2020-10-14 18:32:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:31,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:31,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:32,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:36,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:36,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 18:32:36,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:32:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:32:36,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:36,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:36,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:32:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:32:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 18:32:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:36,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:36,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:36,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:36,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:36,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:36,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:36,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:36,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:36,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:32:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:36,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:36,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:36,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:36,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:36,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:36,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:36,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:32:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:36,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:36,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:36,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:36,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:36,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:36,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:36,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:36,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:32:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:36,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:36,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:36,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:36,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:36,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:36,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:32:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:37,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:37,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:37,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:37,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:37,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:37,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:37,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:37,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:37,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:37,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:37,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:37,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:37,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:37,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:32:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:37,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:37,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:37,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:37,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:37,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:37,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:37,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:37,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:37,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:32:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:37,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:37,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:37,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:37,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:37,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:37,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:37,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:37,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:37,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:32:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:37,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:37,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:37,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:37,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:37,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:37,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:37,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:37,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:37,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:37,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:37,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:37,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:37,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:37,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:37,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:32:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:37,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:37,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:37,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:37,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:37,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:37,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:37,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 18:32:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:37,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:37,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:37,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:37,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:37,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:37,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:37,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 18:32:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:37,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:37,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:37,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:37,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:37,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 22 proven. 332 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 18:32:37,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312548394] [2020-10-14 18:32:37,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:37,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:32:37,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462995824] [2020-10-14 18:32:37,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:32:37,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:37,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:32:37,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:32:37,096 INFO L87 Difference]: Start difference. First operand 495 states and 583 transitions. Second operand 23 states. [2020-10-14 18:32:47,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:32:47,935 INFO L93 Difference]: Finished difference Result 712 states and 825 transitions. [2020-10-14 18:32:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-10-14 18:32:47,937 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 142 [2020-10-14 18:32:47,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:32:47,940 INFO L225 Difference]: With dead ends: 712 [2020-10-14 18:32:47,940 INFO L226 Difference]: Without dead ends: 710 [2020-10-14 18:32:47,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4293 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1337, Invalid=12003, Unknown=0, NotChecked=0, Total=13340 [2020-10-14 18:32:47,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-10-14 18:32:48,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 505. [2020-10-14 18:32:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-10-14 18:32:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 595 transitions. [2020-10-14 18:32:48,021 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 595 transitions. Word has length 142 [2020-10-14 18:32:48,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:32:48,022 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 595 transitions. [2020-10-14 18:32:48,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:32:48,022 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 595 transitions. [2020-10-14 18:32:48,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 18:32:48,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:32:48,024 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 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 18:32:48,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 18:32:48,025 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:32:48,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:32:48,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1636996067, now seen corresponding path program 14 times [2020-10-14 18:32:48,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:32:48,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311365341] [2020-10-14 18:32:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:32:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:48,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 18:32:48,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-14 18:32:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:48,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:32:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:32:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 18:32:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:32:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:32:49,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:32:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:32:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:32:49,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:32:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:32:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:32:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:49,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:32:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:32:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:32:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:32:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:32:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:32:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:32:49,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 18:32:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 18:32:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:32:49,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 18:32:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:32:49,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:32:49,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:32:49,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:32:49,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:32:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:32:49,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:32:49,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:32:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:32:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:32:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:32:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:32:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 36 proven. 378 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 18:32:49,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311365341] [2020-10-14 18:32:49,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:32:49,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:32:49,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313645800] [2020-10-14 18:32:49,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:32:49,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:32:49,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:32:49,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:32:49,368 INFO L87 Difference]: Start difference. First operand 505 states and 595 transitions. Second operand 22 states. [2020-10-14 18:33:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:33:00,187 INFO L93 Difference]: Finished difference Result 773 states and 901 transitions. [2020-10-14 18:33:00,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-10-14 18:33:00,188 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 151 [2020-10-14 18:33:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:33:00,192 INFO L225 Difference]: With dead ends: 773 [2020-10-14 18:33:00,192 INFO L226 Difference]: Without dead ends: 757 [2020-10-14 18:33:00,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4493 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1398, Invalid=11942, Unknown=0, NotChecked=0, Total=13340 [2020-10-14 18:33:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-10-14 18:33:00,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 533. [2020-10-14 18:33:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-10-14 18:33:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 634 transitions. [2020-10-14 18:33:00,291 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 634 transitions. Word has length 151 [2020-10-14 18:33:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:33:00,292 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 634 transitions. [2020-10-14 18:33:00,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:33:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 634 transitions. [2020-10-14 18:33:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 18:33:00,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:33:00,295 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 7, 6, 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 18:33:00,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 18:33:00,295 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:33:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:33:00,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1220712487, now seen corresponding path program 3 times [2020-10-14 18:33:00,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:33:00,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554277046] [2020-10-14 18:33:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:33:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:00,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:00,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:00,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:00,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:05,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:05,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 18:33:05,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:33:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:33:05,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:05,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:33:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:33:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 18:33:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:33:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:33:06,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:06,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:33:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:33:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:33:06,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:33:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:33:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:33:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:33:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:33:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 18:33:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 18:33:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 18:33:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:33:06,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 18:33:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-14 18:33:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-14 18:33:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 18:33:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:33:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:33:06,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:33:06,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:33:06,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:33:06,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:33:06,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:33:06,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:33:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:33:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:33:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:33:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:33:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 24 proven. 390 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-14 18:33:06,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554277046] [2020-10-14 18:33:06,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:33:06,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:33:06,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660273590] [2020-10-14 18:33:06,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:33:06,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:33:06,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:33:06,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=504, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:33:06,128 INFO L87 Difference]: Start difference. First operand 533 states and 634 transitions. Second operand 24 states.