/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:38:51,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:38:51,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:38:51,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:38:51,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:38:51,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:38:51,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:38:51,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:38:51,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:38:51,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:38:51,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:38:51,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:38:51,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:38:51,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:38:51,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:38:51,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:38:51,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:38:51,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:38:51,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:38:51,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:38:51,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:38:51,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:38:51,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:38:51,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:38:51,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:38:51,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:38:51,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:38:51,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:38:51,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:38:51,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:38:51,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:38:51,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:38:51,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:38:51,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:38:51,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:38:51,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:38:51,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:38:51,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:38:51,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:38:51,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:38:51,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:38:51,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:38:51,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:38:51,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:38:51,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:38:51,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:38:51,750 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:38:51,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:38:51,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:38:51,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:38:51,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:38:51,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:38:51,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:38:51,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:38:51,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:38:51,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:38:51,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:38:51,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:38:51,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:38:51,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:38:51,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:38:51,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:38:51,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:38:51,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:38:51,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:38:51,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:38:51,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:38:51,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:38:51,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:38:51,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:38:51,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:38:51,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:38:52,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:38:52,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:38:52,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:38:52,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:38:52,099 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:38:52,100 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2020-10-13 23:38:52,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf091ac43/000c7f81fb8a47a3bc9ff9a9f4182858/FLAG6b95682b9 [2020-10-13 23:38:52,549 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:38:52,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2020-10-13 23:38:52,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf091ac43/000c7f81fb8a47a3bc9ff9a9f4182858/FLAG6b95682b9 [2020-10-13 23:38:52,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf091ac43/000c7f81fb8a47a3bc9ff9a9f4182858 [2020-10-13 23:38:52,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:38:52,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:38:52,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:38:52,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:38:52,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:38:52,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:38:52" (1/1) ... [2020-10-13 23:38:52,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fb007c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:52, skipping insertion in model container [2020-10-13 23:38:52,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:38:52" (1/1) ... [2020-10-13 23:38:52,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:38:52,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:38:53,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:38:53,143 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:38:53,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:38:53,184 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:38:53,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:53 WrapperNode [2020-10-13 23:38:53,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:38:53,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:38:53,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:38:53,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:38:53,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:53" (1/1) ... [2020-10-13 23:38:53,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:53" (1/1) ... [2020-10-13 23:38:53,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:53" (1/1) ... [2020-10-13 23:38:53,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:53" (1/1) ... [2020-10-13 23:38:53,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:53" (1/1) ... [2020-10-13 23:38:53,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:53" (1/1) ... [2020-10-13 23:38:53,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:53" (1/1) ... [2020-10-13 23:38:53,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:38:53,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:38:53,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:38:53,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:38:53,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:38:53,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:38:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:38:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:38:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:38:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:38:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:38:53,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:38:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:38:53,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:38:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:38:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:38:53,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:38:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:38:53,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:38:53,794 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:38:53,794 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:38:53,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:38:53 BoogieIcfgContainer [2020-10-13 23:38:53,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:38:53,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:38:53,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:38:53,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:38:53,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:38:52" (1/3) ... [2020-10-13 23:38:53,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f51d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:38:53, skipping insertion in model container [2020-10-13 23:38:53,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:38:53" (2/3) ... [2020-10-13 23:38:53,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f51d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:38:53, skipping insertion in model container [2020-10-13 23:38:53,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:38:53" (3/3) ... [2020-10-13 23:38:53,806 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.i [2020-10-13 23:38:53,816 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:38:53,822 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:38:53,836 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:38:53,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:38:53,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:38:53,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:38:53,859 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:38:53,859 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:38:53,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:38:53,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:38:53,860 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:38:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-13 23:38:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:38:53,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:53,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:53,885 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:53,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1241254978, now seen corresponding path program 1 times [2020-10-13 23:38:53,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:53,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937597724] [2020-10-13 23:38:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:54,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:38:54,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:38:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 23:38:54,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:54,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:38:54,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:54,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:38:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:54,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:54,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:54,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:54,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:38:54,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:54,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:38:54,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937597724] [2020-10-13 23:38:54,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:38:54,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:38:54,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426756516] [2020-10-13 23:38:54,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:38:54,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:54,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:38:54,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:38:54,218 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-10-13 23:38:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:54,305 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-10-13 23:38:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:38:54,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-13 23:38:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:54,316 INFO L225 Difference]: With dead ends: 48 [2020-10-13 23:38:54,316 INFO L226 Difference]: Without dead ends: 23 [2020-10-13 23:38:54,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:38:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-13 23:38:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-13 23:38:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-13 23:38:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-13 23:38:54,355 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2020-10-13 23:38:54,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:54,356 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-13 23:38:54,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:38:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-13 23:38:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:38:54,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:54,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:54,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:38:54,358 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:54,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:54,358 INFO L82 PathProgramCache]: Analyzing trace with hash -159068691, now seen corresponding path program 1 times [2020-10-13 23:38:54,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:54,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453565042] [2020-10-13 23:38:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:54,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:54,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:54,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:54,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:38:54,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:38:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 23:38:54,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:54,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:38:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:38:54,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:38:54,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:54,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:54,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:54,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:54,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:38:54,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:54,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:54,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:38:54,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453565042] [2020-10-13 23:38:54,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:38:54,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:38:54,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852286130] [2020-10-13 23:38:54,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:38:54,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:54,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:38:54,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:38:54,619 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-10-13 23:38:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:54,676 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-13 23:38:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:38:54,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 23:38:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:54,678 INFO L225 Difference]: With dead ends: 40 [2020-10-13 23:38:54,678 INFO L226 Difference]: Without dead ends: 25 [2020-10-13 23:38:54,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:38:54,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-13 23:38:54,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-13 23:38:54,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 23:38:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-13 23:38:54,687 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-10-13 23:38:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:54,687 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-13 23:38:54,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:38:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-13 23:38:54,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 23:38:54,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:54,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:54,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:38:54,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:54,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1675123339, now seen corresponding path program 1 times [2020-10-13 23:38:54,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:54,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116390449] [2020-10-13 23:38:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:54,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:54,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 23:38:54,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:38:54,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-13 23:38:54,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:54,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:54,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:38:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:38:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:38:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:54,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:54,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:54,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:54,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:54,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:38:54,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:54,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:54,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:38:54,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116390449] [2020-10-13 23:38:54,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:38:54,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:38:54,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817767333] [2020-10-13 23:38:54,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:38:54,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:54,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:38:54,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:38:54,970 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2020-10-13 23:38:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:55,030 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-10-13 23:38:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:38:55,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-13 23:38:55,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:55,031 INFO L225 Difference]: With dead ends: 38 [2020-10-13 23:38:55,032 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 23:38:55,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:38:55,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 23:38:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-13 23:38:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 23:38:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-13 23:38:55,038 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-10-13 23:38:55,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:55,039 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-13 23:38:55,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:38:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-13 23:38:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 23:38:55,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:55,040 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] [2020-10-13 23:38:55,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:38:55,040 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:55,041 INFO L82 PathProgramCache]: Analyzing trace with hash 99818017, now seen corresponding path program 1 times [2020-10-13 23:38:55,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:55,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626426185] [2020-10-13 23:38:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:55,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:55,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:38:55,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:38:55,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-13 23:38:55,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:55,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:38:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:38:55,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 23:38:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:55,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:55,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:55,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:55,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:55,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:55,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:38:55,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:55,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:55,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:55,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:38:55,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626426185] [2020-10-13 23:38:55,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:55,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:38:55,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564028507] [2020-10-13 23:38:55,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:38:55,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:55,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:38:55,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:38:55,464 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-10-13 23:38:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:55,543 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2020-10-13 23:38:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:38:55,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 23:38:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:55,546 INFO L225 Difference]: With dead ends: 41 [2020-10-13 23:38:55,546 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:38:55,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:38:55,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:38:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-13 23:38:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:38:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 23:38:55,553 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2020-10-13 23:38:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:55,554 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 23:38:55,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:38:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 23:38:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 23:38:55,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:55,555 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] [2020-10-13 23:38:55,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:38:55,556 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:55,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:55,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1286613707, now seen corresponding path program 2 times [2020-10-13 23:38:55,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:55,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162498617] [2020-10-13 23:38:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:55,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:55,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:56,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:56,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 23:38:56,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:38:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-13 23:38:56,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:56,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:38:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:38:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:38:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:56,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:56,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:56,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:56,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:38:56,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:56,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:56,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:56,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:56,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:38:56,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162498617] [2020-10-13 23:38:56,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:56,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:38:56,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100518698] [2020-10-13 23:38:56,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:38:56,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:56,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:38:56,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:38:56,059 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-10-13 23:38:56,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:56,148 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-13 23:38:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:38:56,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-13 23:38:56,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:56,150 INFO L225 Difference]: With dead ends: 44 [2020-10-13 23:38:56,150 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 23:38:56,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:38:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 23:38:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-13 23:38:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:38:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-13 23:38:56,158 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 23 [2020-10-13 23:38:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:56,158 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-13 23:38:56,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:38:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-13 23:38:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 23:38:56,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:56,159 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:56,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:38:56,160 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:56,160 INFO L82 PathProgramCache]: Analyzing trace with hash 946233825, now seen corresponding path program 3 times [2020-10-13 23:38:56,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:56,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178517416] [2020-10-13 23:38:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:56,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:56,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:56,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:38:56,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:38:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-13 23:38:56,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:56,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:38:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:38:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:38:56,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:56,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:56,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:56,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:56,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:56,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:38:56,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:56,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:56,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 23:38:56,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178517416] [2020-10-13 23:38:56,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:56,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:38:56,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904364627] [2020-10-13 23:38:56,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:38:56,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:56,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:38:56,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:38:56,834 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-13 23:38:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:56,920 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-13 23:38:56,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:38:56,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-13 23:38:56,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:56,922 INFO L225 Difference]: With dead ends: 56 [2020-10-13 23:38:56,922 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:38:56,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:38:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:38:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 23:38:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 23:38:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-13 23:38:56,932 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 26 [2020-10-13 23:38:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:56,932 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-13 23:38:56,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:38:56,932 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-13 23:38:56,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 23:38:56,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:56,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:56,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:38:56,934 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:56,937 INFO L82 PathProgramCache]: Analyzing trace with hash 793208451, now seen corresponding path program 4 times [2020-10-13 23:38:56,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:56,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726232469] [2020-10-13 23:38:56,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:56,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:57,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:57,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:57,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:38:57,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:38:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 945 [2020-10-13 23:38:57,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:57,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:38:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:38:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:38:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:57,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:57,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:57,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:57,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:57,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:38:57,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:57,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:57,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 23:38:57,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726232469] [2020-10-13 23:38:57,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:57,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:38:57,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188681451] [2020-10-13 23:38:57,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:38:57,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:57,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:38:57,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:38:57,973 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2020-10-13 23:38:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:58,064 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-10-13 23:38:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:38:58,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-13 23:38:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:58,066 INFO L225 Difference]: With dead ends: 49 [2020-10-13 23:38:58,066 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 23:38:58,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:38:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 23:38:58,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-13 23:38:58,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 23:38:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-13 23:38:58,073 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 28 [2020-10-13 23:38:58,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:58,073 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-13 23:38:58,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:38:58,073 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-13 23:38:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 23:38:58,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:58,074 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:58,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:38:58,075 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:58,075 INFO L82 PathProgramCache]: Analyzing trace with hash -711660759, now seen corresponding path program 5 times [2020-10-13 23:38:58,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:58,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098564380] [2020-10-13 23:38:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:58,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:59,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:59,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 23:38:59,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:38:59,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-13 23:38:59,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:59,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:59,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:38:59,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:38:59,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:38:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:59,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:38:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:59,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:59,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:38:59,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:38:59,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:38:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:38:59,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:38:59,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:38:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:38:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:38:59,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:38:59,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:38:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 23:38:59,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098564380] [2020-10-13 23:38:59,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:38:59,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:38:59,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782032456] [2020-10-13 23:38:59,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:38:59,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:38:59,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:38:59,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:38:59,233 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 6 states. [2020-10-13 23:38:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:38:59,300 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-10-13 23:38:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:38:59,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-13 23:38:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:38:59,302 INFO L225 Difference]: With dead ends: 64 [2020-10-13 23:38:59,302 INFO L226 Difference]: Without dead ends: 39 [2020-10-13 23:38:59,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:38:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-13 23:38:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-13 23:38:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 23:38:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-13 23:38:59,308 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 31 [2020-10-13 23:38:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:38:59,309 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-13 23:38:59,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:38:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-13 23:38:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 23:38:59,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:38:59,310 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:38:59,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:38:59,310 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:38:59,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:38:59,311 INFO L82 PathProgramCache]: Analyzing trace with hash -349733945, now seen corresponding path program 6 times [2020-10-13 23:38:59,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:38:59,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236565914] [2020-10-13 23:38:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:38:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:38:59,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:59,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:38:59,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:01,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:01,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 23:39:01,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1849 [2020-10-13 23:39:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:01,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:39:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:39:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:39:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:01,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:01,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:01,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:01,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:01,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:01,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:01,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:01,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:01,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 23:39:01,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236565914] [2020-10-13 23:39:01,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:01,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:39:01,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096847233] [2020-10-13 23:39:01,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:39:01,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:01,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:39:01,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:39:01,240 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 8 states. [2020-10-13 23:39:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:01,361 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-10-13 23:39:01,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:39:01,362 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-13 23:39:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:01,363 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:39:01,363 INFO L226 Difference]: Without dead ends: 43 [2020-10-13 23:39:01,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:39:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-13 23:39:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-10-13 23:39:01,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 23:39:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-13 23:39:01,372 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 33 [2020-10-13 23:39:01,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:01,372 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-13 23:39:01,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:39:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-13 23:39:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 23:39:01,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:01,376 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:01,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:39:01,377 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:01,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:01,380 INFO L82 PathProgramCache]: Analyzing trace with hash 392142693, now seen corresponding path program 7 times [2020-10-13 23:39:01,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:01,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721302601] [2020-10-13 23:39:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:01,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:01,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:01,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:03,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:03,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:39:03,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:03,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1697 [2020-10-13 23:39:03,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:03,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:39:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:39:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 23:39:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:39:03,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:03,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:03,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:03,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:03,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:39:03,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:03,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:03,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 23:39:03,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721302601] [2020-10-13 23:39:03,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:03,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:39:03,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359449362] [2020-10-13 23:39:03,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:39:03,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:03,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:39:03,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:39:03,197 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 9 states. [2020-10-13 23:39:03,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:03,334 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-10-13 23:39:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:39:03,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-13 23:39:03,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:03,336 INFO L225 Difference]: With dead ends: 57 [2020-10-13 23:39:03,336 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:39:03,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:39:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:39:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-13 23:39:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 23:39:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-10-13 23:39:03,345 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 36 [2020-10-13 23:39:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:03,347 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-10-13 23:39:03,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:39:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-10-13 23:39:03,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 23:39:03,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:03,349 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:03,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:39:03,350 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:03,351 INFO L82 PathProgramCache]: Analyzing trace with hash -262639865, now seen corresponding path program 8 times [2020-10-13 23:39:03,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:03,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662589836] [2020-10-13 23:39:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:03,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:05,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:05,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 23:39:05,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:05,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2110 [2020-10-13 23:39:05,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:05,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:39:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:39:05,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:39:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:05,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:05,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:05,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:05,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:05,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:05,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:05,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:05,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:05,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:39:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-13 23:39:05,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662589836] [2020-10-13 23:39:05,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:05,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:39:05,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140852619] [2020-10-13 23:39:05,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:39:05,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:05,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:39:05,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:39:05,566 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 7 states. [2020-10-13 23:39:05,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:05,640 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-10-13 23:39:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:39:05,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-13 23:39:05,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:05,641 INFO L225 Difference]: With dead ends: 78 [2020-10-13 23:39:05,641 INFO L226 Difference]: Without dead ends: 47 [2020-10-13 23:39:05,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:39:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-13 23:39:05,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-13 23:39:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 23:39:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-13 23:39:05,653 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 39 [2020-10-13 23:39:05,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:05,653 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-13 23:39:05,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:39:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-13 23:39:05,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 23:39:05,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:05,658 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:05,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:39:05,658 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:05,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:05,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1419215269, now seen corresponding path program 9 times [2020-10-13 23:39:05,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:05,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065175695] [2020-10-13 23:39:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:05,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:05,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:06,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:09,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:09,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 23:39:09,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:09,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4003 [2020-10-13 23:39:09,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:09,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:39:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:39:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 23:39:09,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:09,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:09,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:09,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:09,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:09,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:09,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:09,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:09,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:09,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:09,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:09,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 23:39:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-13 23:39:09,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065175695] [2020-10-13 23:39:09,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:09,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:39:09,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561063932] [2020-10-13 23:39:09,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:39:09,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:09,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:39:09,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:39:09,847 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 10 states. [2020-10-13 23:39:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:10,141 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-10-13 23:39:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:39:10,142 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-13 23:39:10,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:10,147 INFO L225 Difference]: With dead ends: 75 [2020-10-13 23:39:10,147 INFO L226 Difference]: Without dead ends: 73 [2020-10-13 23:39:10,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:39:10,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-13 23:39:10,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-10-13 23:39:10,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 23:39:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2020-10-13 23:39:10,175 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 41 [2020-10-13 23:39:10,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:10,176 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2020-10-13 23:39:10,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:39:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2020-10-13 23:39:10,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 23:39:10,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:10,179 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:10,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:39:10,179 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:10,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:10,180 INFO L82 PathProgramCache]: Analyzing trace with hash 739156899, now seen corresponding path program 1 times [2020-10-13 23:39:10,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:10,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89915995] [2020-10-13 23:39:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:10,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:13,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:13,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 23:39:13,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3666 [2020-10-13 23:39:13,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:13,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:39:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:39:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:39:13,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:13,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:13,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:13,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:13,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:13,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:13,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:13,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:13,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:13,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:13,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:13,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:13,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 23:39:13,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89915995] [2020-10-13 23:39:13,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:13,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:39:13,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768922262] [2020-10-13 23:39:13,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:39:13,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:13,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:39:13,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:39:13,952 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 10 states. [2020-10-13 23:39:14,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:14,087 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2020-10-13 23:39:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:39:14,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-13 23:39:14,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:14,090 INFO L225 Difference]: With dead ends: 95 [2020-10-13 23:39:14,090 INFO L226 Difference]: Without dead ends: 77 [2020-10-13 23:39:14,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:39:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-13 23:39:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-10-13 23:39:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 23:39:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2020-10-13 23:39:14,098 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 41 [2020-10-13 23:39:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:14,098 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2020-10-13 23:39:14,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:39:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2020-10-13 23:39:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 23:39:14,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:14,099 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:14,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:39:14,100 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:14,100 INFO L82 PathProgramCache]: Analyzing trace with hash -770603323, now seen corresponding path program 2 times [2020-10-13 23:39:14,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:14,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958452167] [2020-10-13 23:39:14,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:14,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:14,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:14,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:17,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:17,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 23:39:17,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3171 [2020-10-13 23:39:17,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:17,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:39:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:39:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:39:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:17,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:17,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:17,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:17,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:17,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:17,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 23:39:17,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958452167] [2020-10-13 23:39:17,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:17,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:39:17,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164801464] [2020-10-13 23:39:17,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:39:17,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:17,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:39:17,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:39:17,343 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand 8 states. [2020-10-13 23:39:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:17,426 INFO L93 Difference]: Finished difference Result 134 states and 164 transitions. [2020-10-13 23:39:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:39:17,427 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-13 23:39:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:17,428 INFO L225 Difference]: With dead ends: 134 [2020-10-13 23:39:17,429 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 23:39:17,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:39:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 23:39:17,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 23:39:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 23:39:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2020-10-13 23:39:17,443 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 44 [2020-10-13 23:39:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:17,443 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2020-10-13 23:39:17,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:39:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2020-10-13 23:39:17,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 23:39:17,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:17,445 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:17,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:39:17,446 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:17,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:17,446 INFO L82 PathProgramCache]: Analyzing trace with hash 34301671, now seen corresponding path program 3 times [2020-10-13 23:39:17,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:17,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20084793] [2020-10-13 23:39:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:17,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:21,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:21,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 23:39:21,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:21,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3916 [2020-10-13 23:39:21,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:21,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:39:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:39:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 23:39:21,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:21,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:21,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:21,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:21,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:21,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 23:39:21,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20084793] [2020-10-13 23:39:21,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:21,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:39:21,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463144834] [2020-10-13 23:39:21,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:39:21,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:21,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:39:21,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:39:21,483 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand 11 states. [2020-10-13 23:39:21,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:21,595 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2020-10-13 23:39:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:39:21,596 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-13 23:39:21,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:21,597 INFO L225 Difference]: With dead ends: 103 [2020-10-13 23:39:21,597 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 23:39:21,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:39:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 23:39:21,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-13 23:39:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 23:39:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2020-10-13 23:39:21,603 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 46 [2020-10-13 23:39:21,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:21,604 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2020-10-13 23:39:21,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:39:21,604 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2020-10-13 23:39:21,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 23:39:21,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:21,605 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:21,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:39:21,605 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:21,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:21,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1017590527, now seen corresponding path program 4 times [2020-10-13 23:39:21,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:21,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929114750] [2020-10-13 23:39:21,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:21,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:24,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:24,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 23:39:24,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:24,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3316 [2020-10-13 23:39:24,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:24,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:24,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:39:24,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:39:24,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:39:24,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:24,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:24,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:24,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:24,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:24,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:24,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:24,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:24,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:24,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:24,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 23:39:25,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929114750] [2020-10-13 23:39:25,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:25,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:39:25,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291569025] [2020-10-13 23:39:25,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:39:25,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:25,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:39:25,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:39:25,009 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand 9 states. [2020-10-13 23:39:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:25,084 INFO L93 Difference]: Finished difference Result 148 states and 182 transitions. [2020-10-13 23:39:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:39:25,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-13 23:39:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:25,086 INFO L225 Difference]: With dead ends: 148 [2020-10-13 23:39:25,086 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 23:39:25,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:39:25,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 23:39:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 23:39:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:39:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2020-10-13 23:39:25,094 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 49 [2020-10-13 23:39:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:25,095 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2020-10-13 23:39:25,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:39:25,096 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2020-10-13 23:39:25,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 23:39:25,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:25,096 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:25,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:39:25,097 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:25,097 INFO L82 PathProgramCache]: Analyzing trace with hash 512733727, now seen corresponding path program 5 times [2020-10-13 23:39:25,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:25,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761384852] [2020-10-13 23:39:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:25,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:25,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:25,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:29,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:29,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 23:39:29,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:29,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4292 [2020-10-13 23:39:29,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:29,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:39:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:39:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 23:39:29,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:29,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:29,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:29,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:29,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:29,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:29,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:29,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:29,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:29,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 23:39:29,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761384852] [2020-10-13 23:39:29,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:29,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:39:29,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115156545] [2020-10-13 23:39:29,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:39:29,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:29,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:39:29,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:39:29,531 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand 12 states. [2020-10-13 23:39:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:29,835 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2020-10-13 23:39:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:39:29,836 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-13 23:39:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:29,837 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:39:29,837 INFO L226 Difference]: Without dead ends: 95 [2020-10-13 23:39:29,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:39:29,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-13 23:39:29,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 62. [2020-10-13 23:39:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-13 23:39:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-10-13 23:39:29,843 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 51 [2020-10-13 23:39:29,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:29,844 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-10-13 23:39:29,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:39:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-10-13 23:39:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 23:39:29,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:29,845 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:29,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:39:29,845 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:29,846 INFO L82 PathProgramCache]: Analyzing trace with hash 237400920, now seen corresponding path program 1 times [2020-10-13 23:39:29,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:29,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748827685] [2020-10-13 23:39:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:29,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:30,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:34,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:34,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 23:39:34,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:34,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4804 [2020-10-13 23:39:34,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:34,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:39:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:39:34,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 23:39:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:34,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:34,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:34,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:39:34,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:34,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:34,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:34,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 23:39:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:34,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:34,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:34,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:39:34,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:34,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:39:34,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:34,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:39:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:34,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:39:34,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 23:39:34,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748827685] [2020-10-13 23:39:34,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:34,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:39:34,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563061519] [2020-10-13 23:39:34,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:39:34,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:34,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:39:34,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:39:34,828 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 12 states. [2020-10-13 23:39:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:35,154 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2020-10-13 23:39:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:39:35,154 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-13 23:39:35,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:35,155 INFO L225 Difference]: With dead ends: 98 [2020-10-13 23:39:35,155 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:39:35,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:39:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:39:35,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-10-13 23:39:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 23:39:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 107 transitions. [2020-10-13 23:39:35,166 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 107 transitions. Word has length 59 [2020-10-13 23:39:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:35,167 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 107 transitions. [2020-10-13 23:39:35,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:39:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 107 transitions. [2020-10-13 23:39:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 23:39:35,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:35,169 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:35,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:39:35,169 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:35,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:35,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1825748822, now seen corresponding path program 1 times [2020-10-13 23:39:35,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:35,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627368172] [2020-10-13 23:39:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:35,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:35,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:39,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 23:39:39,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:39,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4816 [2020-10-13 23:39:39,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:39,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:39:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:39:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:39:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:40,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:40,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:40,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:40,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:40,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:39:40,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:40,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:40,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:40,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:40,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:40,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 23:39:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:40,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:40,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:39:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:40,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:40,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:39:40,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:40,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 92 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-13 23:39:40,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627368172] [2020-10-13 23:39:40,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:40,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:39:40,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378676088] [2020-10-13 23:39:40,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:39:40,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:40,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:39:40,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:39:40,118 INFO L87 Difference]: Start difference. First operand 90 states and 107 transitions. Second operand 12 states. [2020-10-13 23:39:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:40,251 INFO L93 Difference]: Finished difference Result 128 states and 152 transitions. [2020-10-13 23:39:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:39:40,252 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2020-10-13 23:39:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:40,253 INFO L225 Difference]: With dead ends: 128 [2020-10-13 23:39:40,253 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 23:39:40,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:39:40,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 23:39:40,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2020-10-13 23:39:40,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-13 23:39:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 115 transitions. [2020-10-13 23:39:40,269 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 115 transitions. Word has length 59 [2020-10-13 23:39:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:40,269 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 115 transitions. [2020-10-13 23:39:40,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:39:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 115 transitions. [2020-10-13 23:39:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 23:39:40,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:40,271 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:40,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:39:40,271 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:40,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1939264000, now seen corresponding path program 2 times [2020-10-13 23:39:40,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:40,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75936218] [2020-10-13 23:39:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:40,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:45,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:45,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 23:39:45,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:45,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:39:45,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:45,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:39:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:39:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 23:39:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:45,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:45,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:45,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:45,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:45,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:45,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:45,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:45,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:45,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:45,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:39:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:45,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:45,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:39:45,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:45,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:45,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:45,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:39:45,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:39:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 2 proven. 117 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-13 23:39:45,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75936218] [2020-10-13 23:39:45,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:45,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:39:45,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087830112] [2020-10-13 23:39:45,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:39:45,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:45,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:39:45,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:39:45,406 INFO L87 Difference]: Start difference. First operand 96 states and 115 transitions. Second operand 13 states. [2020-10-13 23:39:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:45,550 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2020-10-13 23:39:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:39:45,550 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-13 23:39:45,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:45,552 INFO L225 Difference]: With dead ends: 134 [2020-10-13 23:39:45,552 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 23:39:45,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:39:45,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 23:39:45,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2020-10-13 23:39:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 23:39:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2020-10-13 23:39:45,566 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 62 [2020-10-13 23:39:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:45,566 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2020-10-13 23:39:45,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:39:45,567 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2020-10-13 23:39:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 23:39:45,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:45,576 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:45,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:39:45,577 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:45,577 INFO L82 PathProgramCache]: Analyzing trace with hash -764297450, now seen corresponding path program 3 times [2020-10-13 23:39:45,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:45,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695492039] [2020-10-13 23:39:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:45,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:46,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:50,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:50,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 23:39:50,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:39:50,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:50,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:39:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:39:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:39:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:50,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:50,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:50,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:50,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:50,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:39:50,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:50,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:50,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:39:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:50,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:50,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:39:50,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:50,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:50,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:50,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:50,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:50,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:39:50,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-13 23:39:50,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695492039] [2020-10-13 23:39:50,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:50,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:39:50,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795447598] [2020-10-13 23:39:50,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:39:50,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:50,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:39:50,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:39:50,672 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand 10 states. [2020-10-13 23:39:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:50,750 INFO L93 Difference]: Finished difference Result 188 states and 230 transitions. [2020-10-13 23:39:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:39:50,750 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-13 23:39:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:50,752 INFO L225 Difference]: With dead ends: 188 [2020-10-13 23:39:50,752 INFO L226 Difference]: Without dead ends: 105 [2020-10-13 23:39:50,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:39:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-13 23:39:50,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2020-10-13 23:39:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-13 23:39:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 125 transitions. [2020-10-13 23:39:50,762 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 125 transitions. Word has length 65 [2020-10-13 23:39:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:50,763 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 125 transitions. [2020-10-13 23:39:50,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:39:50,763 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 125 transitions. [2020-10-13 23:39:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 23:39:50,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:50,764 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:50,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:39:50,765 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:50,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:50,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1764141108, now seen corresponding path program 4 times [2020-10-13 23:39:50,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:50,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200994508] [2020-10-13 23:39:50,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:50,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:55,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:55,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 23:39:55,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:39:55,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:39:55,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:55,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:39:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:39:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 23:39:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:55,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:39:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:55,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:55,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:55,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:39:55,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:39:55,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:55,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:39:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:39:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:55,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:39:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:55,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:55,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:39:55,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:39:55,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:39:55,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:39:55,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:39:55,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:39:55,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:39:55,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:39:55,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:39:55,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:39:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 25 proven. 47 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 23:39:55,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200994508] [2020-10-13 23:39:55,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:39:55,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:39:55,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711890933] [2020-10-13 23:39:55,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:39:55,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:39:55,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:39:55,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:39:55,956 INFO L87 Difference]: Start difference. First operand 104 states and 125 transitions. Second operand 14 states. [2020-10-13 23:39:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:39:56,326 INFO L93 Difference]: Finished difference Result 120 states and 142 transitions. [2020-10-13 23:39:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:39:56,329 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-10-13 23:39:56,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:39:56,330 INFO L225 Difference]: With dead ends: 120 [2020-10-13 23:39:56,330 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 23:39:56,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:39:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 23:39:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2020-10-13 23:39:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-13 23:39:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2020-10-13 23:39:56,336 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 67 [2020-10-13 23:39:56,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:39:56,337 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2020-10-13 23:39:56,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:39:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2020-10-13 23:39:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 23:39:56,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:39:56,338 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:39:56,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:39:56,338 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:39:56,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:39:56,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1240374675, now seen corresponding path program 2 times [2020-10-13 23:39:56,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:39:56,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878117282] [2020-10-13 23:39:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:39:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:39:56,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:39:57,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:01,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:01,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:40:01,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:40:01,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:01,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:40:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:40:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 23:40:01,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:01,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:01,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:01,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:01,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:01,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:01,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:01,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:01,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:01,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:40:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:01,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:01,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:01,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:01,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:40:01,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:01,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:40:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:40:01,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:01,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:40:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:01,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:01,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:01,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:01,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:40:01,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:01,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:40:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:40:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-13 23:40:01,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878117282] [2020-10-13 23:40:01,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:01,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:40:01,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182903702] [2020-10-13 23:40:01,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:40:01,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:01,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:40:01,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:40:01,537 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand 14 states. [2020-10-13 23:40:02,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:02,008 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2020-10-13 23:40:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:40:02,008 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 75 [2020-10-13 23:40:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:02,010 INFO L225 Difference]: With dead ends: 121 [2020-10-13 23:40:02,010 INFO L226 Difference]: Without dead ends: 119 [2020-10-13 23:40:02,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:40:02,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-13 23:40:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 113. [2020-10-13 23:40:02,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 23:40:02,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2020-10-13 23:40:02,021 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 75 [2020-10-13 23:40:02,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:02,021 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2020-10-13 23:40:02,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:40:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2020-10-13 23:40:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 23:40:02,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:02,022 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:02,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:40:02,023 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:02,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1380923285, now seen corresponding path program 5 times [2020-10-13 23:40:02,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:02,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694591697] [2020-10-13 23:40:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:02,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:07,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:07,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:40:07,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:07,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:40:07,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:07,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:40:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:40:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:40:07,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:07,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:07,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:07,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:07,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:07,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:07,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:07,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:40:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:07,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:07,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:07,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:07,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:07,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:07,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:07,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:40:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:07,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:07,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:07,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:07,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:07,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-13 23:40:07,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694591697] [2020-10-13 23:40:07,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:07,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:40:07,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469214019] [2020-10-13 23:40:07,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:40:07,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:07,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:40:07,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:40:07,150 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand 14 states. [2020-10-13 23:40:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:07,290 INFO L93 Difference]: Finished difference Result 163 states and 192 transitions. [2020-10-13 23:40:07,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:40:07,291 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 75 [2020-10-13 23:40:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:07,292 INFO L225 Difference]: With dead ends: 163 [2020-10-13 23:40:07,292 INFO L226 Difference]: Without dead ends: 123 [2020-10-13 23:40:07,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:40:07,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-13 23:40:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2020-10-13 23:40:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-13 23:40:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2020-10-13 23:40:07,302 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 75 [2020-10-13 23:40:07,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:07,302 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2020-10-13 23:40:07,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:40:07,302 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2020-10-13 23:40:07,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 23:40:07,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:07,303 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:07,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:40:07,304 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:07,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:07,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1118576999, now seen corresponding path program 6 times [2020-10-13 23:40:07,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:07,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19990828] [2020-10-13 23:40:07,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:07,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:08,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:12,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:12,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 23:40:12,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:12,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:40:12,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:12,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:40:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:40:12,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:40:12,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:12,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:12,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:12,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:12,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:12,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:12,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:40:12,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:12,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:12,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:12,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:12,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:40:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:12,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:12,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:12,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:12,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:12,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:12,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:12,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:12,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:12,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:12,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:12,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:40:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:12,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:12,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:12,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:12,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:12,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2020-10-13 23:40:12,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19990828] [2020-10-13 23:40:12,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:12,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:40:12,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034484564] [2020-10-13 23:40:12,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:40:12,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:12,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:40:12,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:40:12,393 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 11 states. [2020-10-13 23:40:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:12,489 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-10-13 23:40:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:40:12,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-10-13 23:40:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:12,491 INFO L225 Difference]: With dead ends: 220 [2020-10-13 23:40:12,491 INFO L226 Difference]: Without dead ends: 122 [2020-10-13 23:40:12,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:40:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-13 23:40:12,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-13 23:40:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 23:40:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2020-10-13 23:40:12,501 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 78 [2020-10-13 23:40:12,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:12,501 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2020-10-13 23:40:12,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:40:12,501 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2020-10-13 23:40:12,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 23:40:12,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:12,504 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:12,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:40:12,504 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:12,504 INFO L82 PathProgramCache]: Analyzing trace with hash -6343109, now seen corresponding path program 7 times [2020-10-13 23:40:12,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:12,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40154842] [2020-10-13 23:40:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:13,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:17,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:17,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 23:40:17,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:17,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:40:17,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:17,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:40:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:40:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:40:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:17,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:17,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:17,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:17,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:17,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:17,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:17,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:17,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:17,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:17,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:17,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:40:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:17,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:17,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:17,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:17,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:40:17,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:17,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:40:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:40:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:17,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:40:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:17,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:17,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:17,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:40:17,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:17,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:40:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:40:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 27 proven. 84 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-13 23:40:17,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40154842] [2020-10-13 23:40:17,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:17,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:40:17,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335427478] [2020-10-13 23:40:17,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:40:17,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:17,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:40:17,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:40:17,751 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand 16 states. [2020-10-13 23:40:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:18,307 INFO L93 Difference]: Finished difference Result 137 states and 161 transitions. [2020-10-13 23:40:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:40:18,308 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2020-10-13 23:40:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:18,309 INFO L225 Difference]: With dead ends: 137 [2020-10-13 23:40:18,309 INFO L226 Difference]: Without dead ends: 135 [2020-10-13 23:40:18,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:40:18,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-13 23:40:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 91. [2020-10-13 23:40:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 23:40:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2020-10-13 23:40:18,329 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 80 [2020-10-13 23:40:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:18,330 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2020-10-13 23:40:18,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:40:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2020-10-13 23:40:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 23:40:18,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:18,332 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:18,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:40:18,333 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:18,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1263130484, now seen corresponding path program 3 times [2020-10-13 23:40:18,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:18,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028849274] [2020-10-13 23:40:18,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:23,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:23,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 23:40:23,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:23,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:40:23,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:23,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:40:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:40:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 23:40:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:23,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:23,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:23,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:23,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:23,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:23,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:40:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:23,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:23,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:23,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:23,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:23,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:23,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:23,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:40:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:40:23,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:23,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:40:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:23,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:23,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:23,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:23,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:23,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:40:23,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:23,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:23,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:40:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:40:23,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:40:23,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:40:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:23,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:23,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:23,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:23,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:23,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:23,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:40:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:40:23,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 6 proven. 117 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-13 23:40:23,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028849274] [2020-10-13 23:40:23,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:23,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:40:23,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431347478] [2020-10-13 23:40:23,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:40:23,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:23,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:40:23,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:40:23,563 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand 16 states. [2020-10-13 23:40:24,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:24,120 INFO L93 Difference]: Finished difference Result 138 states and 162 transitions. [2020-10-13 23:40:24,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:40:24,120 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-10-13 23:40:24,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:24,122 INFO L225 Difference]: With dead ends: 138 [2020-10-13 23:40:24,122 INFO L226 Difference]: Without dead ends: 136 [2020-10-13 23:40:24,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:40:24,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-13 23:40:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 130. [2020-10-13 23:40:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 23:40:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2020-10-13 23:40:24,134 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 88 [2020-10-13 23:40:24,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:24,134 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2020-10-13 23:40:24,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:40:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2020-10-13 23:40:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 23:40:24,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:24,136 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:24,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:40:24,136 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:24,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1335517042, now seen corresponding path program 8 times [2020-10-13 23:40:24,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:24,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258680716] [2020-10-13 23:40:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:24,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:25,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:29,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:29,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 23:40:29,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:40:29,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:29,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:40:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:40:29,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 23:40:29,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:29,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:29,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:29,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:29,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:29,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:29,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:29,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:40:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:29,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:29,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:29,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:29,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:29,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:29,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:29,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:40:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:29,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:29,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:29,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:29,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:29,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:29,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:29,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:29,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:40:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:29,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:29,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:29,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:29,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:29,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:29,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:29,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:29,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:29,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 6 proven. 176 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 23:40:29,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258680716] [2020-10-13 23:40:29,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:29,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:40:29,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008258434] [2020-10-13 23:40:29,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:40:29,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:29,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:40:29,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:40:29,278 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand 15 states. [2020-10-13 23:40:29,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:29,402 INFO L93 Difference]: Finished difference Result 192 states and 224 transitions. [2020-10-13 23:40:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:40:29,402 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-10-13 23:40:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:29,404 INFO L225 Difference]: With dead ends: 192 [2020-10-13 23:40:29,404 INFO L226 Difference]: Without dead ends: 140 [2020-10-13 23:40:29,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:40:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-13 23:40:29,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2020-10-13 23:40:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-13 23:40:29,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2020-10-13 23:40:29,415 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 88 [2020-10-13 23:40:29,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:29,416 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2020-10-13 23:40:29,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:40:29,416 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2020-10-13 23:40:29,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 23:40:29,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:29,417 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:29,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:40:29,418 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:29,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:29,418 INFO L82 PathProgramCache]: Analyzing trace with hash 609851904, now seen corresponding path program 9 times [2020-10-13 23:40:29,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:29,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298294270] [2020-10-13 23:40:29,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:30,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:34,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:34,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 23:40:34,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:34,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:40:34,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:34,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:34,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:40:34,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:40:34,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:40:34,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:34,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:34,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:34,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:34,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:34,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:34,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:34,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:34,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 23:40:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:34,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:34,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:34,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:34,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:34,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:34,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:34,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:34,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:34,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:40:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:34,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:34,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:34,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:34,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:34,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:34,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:34,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:34,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:34,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:40:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:34,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:34,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:34,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:34,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:34,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 6 proven. 210 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 23:40:34,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298294270] [2020-10-13 23:40:34,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:34,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:40:34,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197150852] [2020-10-13 23:40:34,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:40:34,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:34,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:40:34,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:40:34,585 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand 16 states. [2020-10-13 23:40:34,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:34,740 INFO L93 Difference]: Finished difference Result 198 states and 232 transitions. [2020-10-13 23:40:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:40:34,741 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 91 [2020-10-13 23:40:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:34,742 INFO L225 Difference]: With dead ends: 198 [2020-10-13 23:40:34,742 INFO L226 Difference]: Without dead ends: 146 [2020-10-13 23:40:34,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:40:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-13 23:40:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2020-10-13 23:40:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-13 23:40:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 169 transitions. [2020-10-13 23:40:34,755 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 169 transitions. Word has length 91 [2020-10-13 23:40:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:34,755 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 169 transitions. [2020-10-13 23:40:34,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:40:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 169 transitions. [2020-10-13 23:40:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 23:40:34,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:34,757 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:34,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:40:34,757 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:34,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:34,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1109873486, now seen corresponding path program 10 times [2020-10-13 23:40:34,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:34,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300316898] [2020-10-13 23:40:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:34,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:34,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:39,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:39,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:40:39,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:39,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:40:39,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:39,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:40:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:40:39,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:40:39,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:39,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:39,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:39,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:39,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:39,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:39,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:39,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:39,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:39,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:39,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:39,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:39,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:40:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:39,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:39,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:39,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:39,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:39,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 23:40:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:39,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:39,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:39,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:39,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:39,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:39,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:39,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:39,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:39,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 23:40:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:39,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:39,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:39,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:39,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:39,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:40:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-13 23:40:39,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300316898] [2020-10-13 23:40:39,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:39,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:40:39,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377891035] [2020-10-13 23:40:39,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:40:39,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:39,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:40:39,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:40:39,862 INFO L87 Difference]: Start difference. First operand 142 states and 169 transitions. Second operand 12 states. [2020-10-13 23:40:39,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:39,953 INFO L93 Difference]: Finished difference Result 264 states and 318 transitions. [2020-10-13 23:40:39,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:40:39,953 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-10-13 23:40:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:39,954 INFO L225 Difference]: With dead ends: 264 [2020-10-13 23:40:39,955 INFO L226 Difference]: Without dead ends: 145 [2020-10-13 23:40:39,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:40:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-13 23:40:39,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2020-10-13 23:40:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-13 23:40:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2020-10-13 23:40:39,967 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 94 [2020-10-13 23:40:39,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:39,967 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2020-10-13 23:40:39,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:40:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2020-10-13 23:40:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:40:39,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:39,969 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:39,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:40:39,970 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:39,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash -803962796, now seen corresponding path program 11 times [2020-10-13 23:40:39,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:39,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770599476] [2020-10-13 23:40:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:40,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:41,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:44,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:44,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:40:44,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:40:44,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:44,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:40:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:40:44,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 23:40:44,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:45,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:45,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:45,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:45,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:45,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:45,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:45,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:45,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 23:40:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:45,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:45,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:45,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:45,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:45,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:45,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:40:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:45,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:45,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:45,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:45,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:45,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:45,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 23:40:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:45,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:45,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:45,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:45,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:45,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 247 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-13 23:40:45,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770599476] [2020-10-13 23:40:45,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:45,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:40:45,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044431562] [2020-10-13 23:40:45,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:40:45,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:45,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:40:45,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:40:45,141 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand 17 states. [2020-10-13 23:40:45,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:45,310 INFO L93 Difference]: Finished difference Result 206 states and 242 transitions. [2020-10-13 23:40:45,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:40:45,311 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2020-10-13 23:40:45,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:45,312 INFO L225 Difference]: With dead ends: 206 [2020-10-13 23:40:45,312 INFO L226 Difference]: Without dead ends: 154 [2020-10-13 23:40:45,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:40:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-13 23:40:45,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2020-10-13 23:40:45,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-13 23:40:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2020-10-13 23:40:45,331 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 96 [2020-10-13 23:40:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:45,331 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2020-10-13 23:40:45,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:40:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2020-10-13 23:40:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 23:40:45,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:45,333 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:45,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:40:45,334 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:45,334 INFO L82 PathProgramCache]: Analyzing trace with hash 680670686, now seen corresponding path program 12 times [2020-10-13 23:40:45,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:45,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289494476] [2020-10-13 23:40:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:45,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:47,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:50,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:50,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 23:40:50,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:40:50,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:50,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:40:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:40:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:40:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:50,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:50,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:50,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:50,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:50,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:50,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:50,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:50,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:40:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:50,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:50,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:50,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:50,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:50,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:50,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:50,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:40:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:50,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:50,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:50,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:50,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:50,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:50,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:50,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:50,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:50,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:50,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:50,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:50,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:40:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:50,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:50,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:50,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:50,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:40:50,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:50,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:40:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 6 proven. 81 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-13 23:40:50,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289494476] [2020-10-13 23:40:50,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:50,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:40:50,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369450719] [2020-10-13 23:40:50,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:40:50,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:50,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:40:50,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:40:50,448 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 13 states. [2020-10-13 23:40:50,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:50,548 INFO L93 Difference]: Finished difference Result 278 states and 336 transitions. [2020-10-13 23:40:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:40:50,548 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-10-13 23:40:50,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:50,549 INFO L225 Difference]: With dead ends: 278 [2020-10-13 23:40:50,550 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 23:40:50,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:40:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 23:40:50,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-10-13 23:40:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 23:40:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2020-10-13 23:40:50,564 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 99 [2020-10-13 23:40:50,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:50,564 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2020-10-13 23:40:50,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:40:50,564 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2020-10-13 23:40:50,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 23:40:50,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:50,566 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:50,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:40:50,566 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:50,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:50,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1714640764, now seen corresponding path program 13 times [2020-10-13 23:40:50,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:50,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864898147] [2020-10-13 23:40:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:50,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:52,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:55,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:55,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 23:40:55,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:40:55,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:40:55,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:55,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:55,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:40:55,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:40:55,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 23:40:55,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:40:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:55,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:55,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:55,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:40:55,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:55,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:55,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:40:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:40:55,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:40:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:55,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:55,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:55,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:55,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:55,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:55,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:40:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:55,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:40:55,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:40:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:55,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:55,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:55,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:55,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:55,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:55,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:55,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:40:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:40:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:55,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:40:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:55,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:40:55,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:40:55,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:40:55,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:40:55,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:40:55,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:40:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:40:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:40:55,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:40:55,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:40:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 35 proven. 150 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2020-10-13 23:40:55,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864898147] [2020-10-13 23:40:55,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:40:55,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:40:55,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429823042] [2020-10-13 23:40:55,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:40:55,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:40:55,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:40:55,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:40:55,847 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand 18 states. [2020-10-13 23:40:56,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:40:56,556 INFO L93 Difference]: Finished difference Result 168 states and 198 transitions. [2020-10-13 23:40:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:40:56,557 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 101 [2020-10-13 23:40:56,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:40:56,558 INFO L225 Difference]: With dead ends: 168 [2020-10-13 23:40:56,558 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 23:40:56,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:40:56,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 23:40:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 112. [2020-10-13 23:40:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-13 23:40:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-13 23:40:56,575 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 101 [2020-10-13 23:40:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:40:56,577 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-13 23:40:56,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:40:56,577 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-13 23:40:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 23:40:56,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:40:56,578 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:40:56,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:40:56,578 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:40:56,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:40:56,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1931347381, now seen corresponding path program 4 times [2020-10-13 23:40:56,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:40:56,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807707047] [2020-10-13 23:40:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:40:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:40:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:40:59,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:01,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 23:41:01,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:41:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:41:01,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:01,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:41:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:41:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 23:41:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:01,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:01,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:01,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:01,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:01,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:01,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:01,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:01,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:01,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:01,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:01,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:41:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:01,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:01,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:01,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:01,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:01,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:01,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:01,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:41:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:01,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:01,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:01,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:01,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:01,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:01,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:01,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:01,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:41:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:01,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:01,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:01,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:01,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:01,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:01,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:01,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:41:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:01,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:01,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:01,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:01,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:01,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:01,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 8 proven. 193 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-13 23:41:01,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807707047] [2020-10-13 23:41:01,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:01,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:41:01,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283416299] [2020-10-13 23:41:01,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:41:01,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:01,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:41:01,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:41:01,874 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 18 states. [2020-10-13 23:41:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:02,629 INFO L93 Difference]: Finished difference Result 169 states and 199 transitions. [2020-10-13 23:41:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:41:02,632 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 109 [2020-10-13 23:41:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:02,633 INFO L225 Difference]: With dead ends: 169 [2020-10-13 23:41:02,633 INFO L226 Difference]: Without dead ends: 167 [2020-10-13 23:41:02,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:41:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-13 23:41:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 161. [2020-10-13 23:41:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 23:41:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 190 transitions. [2020-10-13 23:41:02,646 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 190 transitions. Word has length 109 [2020-10-13 23:41:02,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:02,646 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 190 transitions. [2020-10-13 23:41:02,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:41:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 190 transitions. [2020-10-13 23:41:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 23:41:02,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:02,648 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:02,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:41:02,648 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:02,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:02,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1507700659, now seen corresponding path program 14 times [2020-10-13 23:41:02,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:02,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102354782] [2020-10-13 23:41:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:02,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:05,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:07,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:07,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 23:41:07,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:41:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:41:07,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:07,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:41:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:41:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:41:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:07,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:07,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:07,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:07,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:07,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:07,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:07,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:07,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:07,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:41:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:07,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:07,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:07,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:07,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:07,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:07,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:07,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:07,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:07,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:41:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:07,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:07,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:07,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:07,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:07,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:07,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:41:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:07,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:07,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:07,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:07,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:07,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:07,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:07,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:07,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:07,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:07,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:41:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:07,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:07,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:07,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:07,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:07,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:07,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:07,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 8 proven. 287 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-13 23:41:07,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102354782] [2020-10-13 23:41:07,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:07,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:41:07,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985240676] [2020-10-13 23:41:07,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:41:07,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:07,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:41:07,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:41:07,862 INFO L87 Difference]: Start difference. First operand 161 states and 190 transitions. Second operand 18 states. [2020-10-13 23:41:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:08,002 INFO L93 Difference]: Finished difference Result 235 states and 274 transitions. [2020-10-13 23:41:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:41:08,003 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 109 [2020-10-13 23:41:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:08,004 INFO L225 Difference]: With dead ends: 235 [2020-10-13 23:41:08,004 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 23:41:08,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:41:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 23:41:08,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2020-10-13 23:41:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-13 23:41:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 198 transitions. [2020-10-13 23:41:08,016 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 198 transitions. Word has length 109 [2020-10-13 23:41:08,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:08,017 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 198 transitions. [2020-10-13 23:41:08,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:41:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 198 transitions. [2020-10-13 23:41:08,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 23:41:08,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:08,018 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:08,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:41:08,018 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:08,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1769450477, now seen corresponding path program 15 times [2020-10-13 23:41:08,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:08,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887847070] [2020-10-13 23:41:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:13,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:13,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 23:41:13,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:41:13,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:41:13,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:13,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:13,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:41:13,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:41:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:41:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:13,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:13,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:13,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:13,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:13,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:13,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:13,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:41:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:13,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:13,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:13,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:13,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:13,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:13,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:13,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:13,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:13,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:13,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:13,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 23:41:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:13,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:13,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:13,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:13,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:13,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:13,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:13,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:13,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 23:41:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:13,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:13,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:13,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:13,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:13,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:41:13,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:41:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:13,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:13,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:13,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:13,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:13,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:13,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:13,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:13,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2020-10-13 23:41:13,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887847070] [2020-10-13 23:41:13,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:13,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:41:13,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340614687] [2020-10-13 23:41:13,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:41:13,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:13,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:41:13,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:41:13,158 INFO L87 Difference]: Start difference. First operand 167 states and 198 transitions. Second operand 14 states. [2020-10-13 23:41:13,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:13,271 INFO L93 Difference]: Finished difference Result 310 states and 372 transitions. [2020-10-13 23:41:13,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:41:13,272 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 112 [2020-10-13 23:41:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:13,273 INFO L225 Difference]: With dead ends: 310 [2020-10-13 23:41:13,273 INFO L226 Difference]: Without dead ends: 170 [2020-10-13 23:41:13,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:41:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-13 23:41:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2020-10-13 23:41:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-13 23:41:13,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 200 transitions. [2020-10-13 23:41:13,285 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 200 transitions. Word has length 112 [2020-10-13 23:41:13,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:13,285 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 200 transitions. [2020-10-13 23:41:13,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:41:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 200 transitions. [2020-10-13 23:41:13,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 23:41:13,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:13,286 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:13,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:41:13,287 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:13,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:13,287 INFO L82 PathProgramCache]: Analyzing trace with hash 391551759, now seen corresponding path program 16 times [2020-10-13 23:41:13,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:13,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542261205] [2020-10-13 23:41:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:16,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:18,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:18,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 23:41:18,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:41:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:41:18,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:18,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:41:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:41:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 23:41:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:18,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:18,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:18,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:18,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:18,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:18,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 23:41:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:18,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:18,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:18,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:18,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:18,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:18,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 23:41:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:18,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:18,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:18,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:18,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:18,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:18,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:18,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:18,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:41:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:18,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:18,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:18,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:18,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:18,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:18,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:18,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:41:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:18,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:18,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:18,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:18,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:18,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:18,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:18,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 37 proven. 207 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-10-13 23:41:18,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542261205] [2020-10-13 23:41:18,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:18,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:41:18,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743963329] [2020-10-13 23:41:18,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:41:18,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:18,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:41:18,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:41:18,623 INFO L87 Difference]: Start difference. First operand 169 states and 200 transitions. Second operand 20 states. [2020-10-13 23:41:19,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:19,575 INFO L93 Difference]: Finished difference Result 185 states and 217 transitions. [2020-10-13 23:41:19,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:41:19,577 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 114 [2020-10-13 23:41:19,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:19,578 INFO L225 Difference]: With dead ends: 185 [2020-10-13 23:41:19,578 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 23:41:19,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:41:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 23:41:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 125. [2020-10-13 23:41:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 23:41:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2020-10-13 23:41:19,597 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 114 [2020-10-13 23:41:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:19,598 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2020-10-13 23:41:19,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:41:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2020-10-13 23:41:19,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:41:19,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:19,599 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:19,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:41:19,599 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:19,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:19,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1131209800, now seen corresponding path program 5 times [2020-10-13 23:41:19,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:19,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254896297] [2020-10-13 23:41:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:19,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:23,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:24,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:24,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 23:41:24,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:41:24,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 23:41:24,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:24,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:41:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:41:24,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 23:41:24,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:24,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:24,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:24,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:24,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:24,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:24,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:24,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:24,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 23:41:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:24,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:24,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:24,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:24,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:24,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:24,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:24,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:24,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 23:41:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:24,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:24,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:24,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:24,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:24,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:24,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:41:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:24,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:24,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:24,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:24,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:24,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:41:24,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:24,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:24,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:24,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:41:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:24,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:24,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:24,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:24,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 23:41:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:24,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:24,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:24,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:24,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:24,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:24,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:24,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:41:24,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:24,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:41:24,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 10 proven. 254 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-10-13 23:41:24,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254896297] [2020-10-13 23:41:24,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:24,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:41:24,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165395654] [2020-10-13 23:41:24,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:41:24,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:24,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:41:24,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:41:24,957 INFO L87 Difference]: Start difference. First operand 125 states and 142 transitions. Second operand 20 states. [2020-10-13 23:41:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:25,854 INFO L93 Difference]: Finished difference Result 186 states and 218 transitions. [2020-10-13 23:41:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:41:25,854 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 122 [2020-10-13 23:41:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:25,856 INFO L225 Difference]: With dead ends: 186 [2020-10-13 23:41:25,856 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 23:41:25,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:41:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 23:41:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2020-10-13 23:41:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 23:41:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2020-10-13 23:41:25,869 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 122 [2020-10-13 23:41:25,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:25,870 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2020-10-13 23:41:25,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:41:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2020-10-13 23:41:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:41:25,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:25,871 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:25,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:41:25,872 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:25,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1146728518, now seen corresponding path program 17 times [2020-10-13 23:41:25,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:25,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492424099] [2020-10-13 23:41:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:25,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:29,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:30,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:30,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 23:41:30,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:41:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:41:30,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:30,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:41:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:41:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 23:41:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:31,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:31,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:31,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:31,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:31,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:31,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:31,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:31,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:31,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 23:41:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:31,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:31,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:31,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:31,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:31,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:31,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:31,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:31,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:31,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 23:41:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:31,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:31,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:31,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:31,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:31,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:31,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:31,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:31,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:31,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:31,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:31,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:31,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:41:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:31,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:31,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:31,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:31,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:31,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:31,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:31,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:31,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:41:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:31,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:31,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:31,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:31,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:31,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:31,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:31,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:31,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 23:41:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:31,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:31,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:31,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:31,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:31,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:31,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:31,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:31,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:31,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:31,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:31,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 10 proven. 330 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 23:41:31,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492424099] [2020-10-13 23:41:31,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:31,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:41:31,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703050386] [2020-10-13 23:41:31,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:41:31,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:31,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:41:31,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:41:31,101 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand 19 states. [2020-10-13 23:41:31,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:31,268 INFO L93 Difference]: Finished difference Result 264 states and 306 transitions. [2020-10-13 23:41:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:41:31,269 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-13 23:41:31,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:31,270 INFO L225 Difference]: With dead ends: 264 [2020-10-13 23:41:31,271 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 23:41:31,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:41:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 23:41:31,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2020-10-13 23:41:31,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-13 23:41:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 217 transitions. [2020-10-13 23:41:31,295 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 217 transitions. Word has length 122 [2020-10-13 23:41:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:31,296 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 217 transitions. [2020-10-13 23:41:31,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:41:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 217 transitions. [2020-10-13 23:41:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 23:41:31,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:31,301 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:31,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:41:31,302 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:31,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:31,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1039181384, now seen corresponding path program 18 times [2020-10-13 23:41:31,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:31,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688949449] [2020-10-13 23:41:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:31,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:31,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:36,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:36,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 23:41:36,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:41:36,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:41:36,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:36,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:41:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:41:36,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 23:41:36,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:36,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:36,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:36,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:36,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:36,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:36,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:36,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:36,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:36,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:36,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:36,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:41:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:36,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:36,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:36,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:36,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:36,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:36,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:36,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:41:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:36,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:36,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:36,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:36,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:36,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:36,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:36,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:41:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:36,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:36,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:36,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:36,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:36,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:36,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:36,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:36,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:36,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:36,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:41:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:36,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:36,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:36,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:36,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:36,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:41:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:36,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:36,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:36,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:36,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:36,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:36,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:36,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:36,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 10 proven. 376 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 23:41:36,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688949449] [2020-10-13 23:41:36,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:36,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:41:36,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242590863] [2020-10-13 23:41:36,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:41:36,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:36,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:41:36,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:41:36,552 INFO L87 Difference]: Start difference. First operand 184 states and 217 transitions. Second operand 20 states. [2020-10-13 23:41:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:36,721 INFO L93 Difference]: Finished difference Result 270 states and 314 transitions. [2020-10-13 23:41:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:41:36,721 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 125 [2020-10-13 23:41:36,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:36,723 INFO L225 Difference]: With dead ends: 270 [2020-10-13 23:41:36,723 INFO L226 Difference]: Without dead ends: 194 [2020-10-13 23:41:36,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:41:36,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-13 23:41:36,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 190. [2020-10-13 23:41:36,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-13 23:41:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2020-10-13 23:41:36,737 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 125 [2020-10-13 23:41:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:36,737 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2020-10-13 23:41:36,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:41:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2020-10-13 23:41:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 23:41:36,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:36,739 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:36,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:41:36,739 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:36,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:36,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1148115206, now seen corresponding path program 19 times [2020-10-13 23:41:36,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:36,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189003882] [2020-10-13 23:41:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:40,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:41,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:41,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 23:41:41,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:41:41,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:41:41,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:41,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:41,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:41:41,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:41:41,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:41:41,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:41,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:41,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:41,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:41,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:41,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:41,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:41,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:41:41,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 23:41:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:41,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:41,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:41,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:41,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:41,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:41,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:41,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:41,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:41,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:41:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 23:41:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:41,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:41,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:41,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:41,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:41,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:41,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:41:41,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:41:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:41,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:41,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:41,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:41,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:41,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:41,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:41,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:41,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:41:41,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 23:41:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:41,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:41,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:41,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:41,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:41,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:41,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:41,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:41,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:41,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:41,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 23:41:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:41,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:41,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:41,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:41,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:41,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:41,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:41,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:41,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:41:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 10 proven. 121 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2020-10-13 23:41:41,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189003882] [2020-10-13 23:41:41,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:41,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:41:41,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345727981] [2020-10-13 23:41:41,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:41:41,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:41,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:41:41,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:41:41,947 INFO L87 Difference]: Start difference. First operand 190 states and 225 transitions. Second operand 15 states. [2020-10-13 23:41:42,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:42,099 INFO L93 Difference]: Finished difference Result 354 states and 424 transitions. [2020-10-13 23:41:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:41:42,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 128 [2020-10-13 23:41:42,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:42,101 INFO L225 Difference]: With dead ends: 354 [2020-10-13 23:41:42,101 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 23:41:42,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:41:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 23:41:42,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2020-10-13 23:41:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 23:41:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 227 transitions. [2020-10-13 23:41:42,122 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 227 transitions. Word has length 128 [2020-10-13 23:41:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:42,123 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 227 transitions. [2020-10-13 23:41:42,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:41:42,123 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 227 transitions. [2020-10-13 23:41:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 23:41:42,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:42,125 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 12, 12, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:42,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:41:42,125 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:42,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1021361112, now seen corresponding path program 20 times [2020-10-13 23:41:42,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:42,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554957985] [2020-10-13 23:41:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:42,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:47,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:47,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 23:41:47,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:41:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:41:47,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:47,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:41:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:41:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 23:41:47,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:47,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:47,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:47,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:47,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:47,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:41:47,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:47,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:47,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:47,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:47,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 23:41:47,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 23:41:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:47,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:47,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:47,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:47,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:47,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:47,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:47,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:47,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:47,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:41:47,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:41:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:47,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:47,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:47,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:47,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:47,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:47,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:47,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:47,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:41:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:47,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:47,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:47,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:47,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:47,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:47,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:47,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:47,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:47,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:47,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 23:41:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:47,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:47,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:47,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:47,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:47,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:47,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:41:47,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:41:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:47,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:47,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:47,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:47,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:47,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:47,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:47,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:47,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:41:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 10 proven. 425 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-10-13 23:41:47,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554957985] [2020-10-13 23:41:47,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:47,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:41:47,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359656166] [2020-10-13 23:41:47,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:41:47,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:47,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:41:47,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:41:47,463 INFO L87 Difference]: Start difference. First operand 192 states and 227 transitions. Second operand 21 states. [2020-10-13 23:41:47,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:47,652 INFO L93 Difference]: Finished difference Result 278 states and 324 transitions. [2020-10-13 23:41:47,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:41:47,652 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 130 [2020-10-13 23:41:47,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:47,654 INFO L225 Difference]: With dead ends: 278 [2020-10-13 23:41:47,654 INFO L226 Difference]: Without dead ends: 202 [2020-10-13 23:41:47,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:41:47,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-13 23:41:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 198. [2020-10-13 23:41:47,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-13 23:41:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 235 transitions. [2020-10-13 23:41:47,678 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 235 transitions. Word has length 130 [2020-10-13 23:41:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:47,679 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 235 transitions. [2020-10-13 23:41:47,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:41:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 235 transitions. [2020-10-13 23:41:47,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 23:41:47,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:47,681 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 12, 12, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:47,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:41:47,681 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:47,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:47,681 INFO L82 PathProgramCache]: Analyzing trace with hash -800788698, now seen corresponding path program 21 times [2020-10-13 23:41:47,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:47,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822643895] [2020-10-13 23:41:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:47,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:47,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:52,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:52,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 23:41:52,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:41:52,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:41:52,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:52,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:41:52,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:41:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:41:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:52,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:52,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:52,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:52,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:52,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:52,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:52,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:52,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:52,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:52,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:41:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:52,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:52,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:52,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:52,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:52,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:52,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:52,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:41:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:52,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:52,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:52,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:52,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:52,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:52,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:52,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:52,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:52,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:52,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:52,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:41:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:52,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:52,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:52,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:52,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:52,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:52,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:52,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:41:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:52,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:52,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:52,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:52,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:52,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:52,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:52,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:52,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:41:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:52,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:52,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:52,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:52,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:52,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 10 proven. 144 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2020-10-13 23:41:52,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822643895] [2020-10-13 23:41:52,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:52,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:41:52,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565032459] [2020-10-13 23:41:52,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:41:52,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:52,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:41:52,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:41:52,855 INFO L87 Difference]: Start difference. First operand 198 states and 235 transitions. Second operand 16 states. [2020-10-13 23:41:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:52,983 INFO L93 Difference]: Finished difference Result 368 states and 442 transitions. [2020-10-13 23:41:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:41:52,984 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 133 [2020-10-13 23:41:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:52,985 INFO L225 Difference]: With dead ends: 368 [2020-10-13 23:41:52,985 INFO L226 Difference]: Without dead ends: 201 [2020-10-13 23:41:52,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:41:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-13 23:41:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-10-13 23:41:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-13 23:41:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 237 transitions. [2020-10-13 23:41:53,009 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 237 transitions. Word has length 133 [2020-10-13 23:41:53,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:53,011 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 237 transitions. [2020-10-13 23:41:53,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:41:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 237 transitions. [2020-10-13 23:41:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 23:41:53,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:53,013 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:53,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:41:53,013 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:53,013 INFO L82 PathProgramCache]: Analyzing trace with hash -802936508, now seen corresponding path program 22 times [2020-10-13 23:41:53,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:53,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028333594] [2020-10-13 23:41:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:58,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:58,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 23:41:58,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:41:58,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:41:58,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:58,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:41:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:41:58,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 23:41:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:58,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:41:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:58,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:58,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:41:58,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:58,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:58,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:58,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:41:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:58,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:58,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:41:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:58,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:58,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:58,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:58,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:58,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:58,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:58,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:58,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:41:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:58,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:58,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:58,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:58,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:58,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:58,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:58,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:58,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:58,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:58,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:58,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:41:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:58,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:58,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:58,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:58,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:41:58,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:58,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:58,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:58,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:58,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:58,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:41:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:58,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:58,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:58,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:58,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:58,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:58,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:58,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:41:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:58,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:41:58,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:41:58,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:41:58,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:41:58,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:41:58,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:41:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:41:58,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:41:58,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:41:58,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:41:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 10 proven. 477 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-13 23:41:58,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028333594] [2020-10-13 23:41:58,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:41:58,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 23:41:58,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704114708] [2020-10-13 23:41:58,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 23:41:58,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:41:58,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 23:41:58,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:41:58,294 INFO L87 Difference]: Start difference. First operand 200 states and 237 transitions. Second operand 22 states. [2020-10-13 23:41:58,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:41:58,498 INFO L93 Difference]: Finished difference Result 286 states and 334 transitions. [2020-10-13 23:41:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 23:41:58,501 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 135 [2020-10-13 23:41:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:41:58,502 INFO L225 Difference]: With dead ends: 286 [2020-10-13 23:41:58,502 INFO L226 Difference]: Without dead ends: 210 [2020-10-13 23:41:58,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:41:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-13 23:41:58,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 206. [2020-10-13 23:41:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-13 23:41:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 245 transitions. [2020-10-13 23:41:58,522 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 245 transitions. Word has length 135 [2020-10-13 23:41:58,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:41:58,522 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 245 transitions. [2020-10-13 23:41:58,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 23:41:58,523 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 245 transitions. [2020-10-13 23:41:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-13 23:41:58,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:41:58,525 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:41:58,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:41:58,525 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:41:58,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:41:58,525 INFO L82 PathProgramCache]: Analyzing trace with hash -588864374, now seen corresponding path program 23 times [2020-10-13 23:41:58,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:41:58,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000453688] [2020-10-13 23:41:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:41:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:41:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:41:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:03,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:03,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 23:42:03,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:42:03,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 23:42:03,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:03,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:42:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:42:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 23:42:03,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:03,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:03,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:03,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:03,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:03,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:03,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:03,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:42:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:03,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:03,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:03,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:03,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:03,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:03,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:03,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:03,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:03,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:42:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:03,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:03,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:03,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:03,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:03,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:03,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:03,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:03,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:03,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 23:42:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:03,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:03,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:03,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:03,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:03,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:03,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:03,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:03,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:42:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:03,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:03,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:03,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:03,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:03,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:03,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:03,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 23:42:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:03,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:03,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:03,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:03,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:03,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:03,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:03,836 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 10 proven. 532 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-13 23:42:03,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000453688] [2020-10-13 23:42:03,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:03,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:42:03,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577182138] [2020-10-13 23:42:03,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:42:03,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:03,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:42:03,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:42:03,838 INFO L87 Difference]: Start difference. First operand 206 states and 245 transitions. Second operand 23 states. [2020-10-13 23:42:04,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:04,048 INFO L93 Difference]: Finished difference Result 292 states and 342 transitions. [2020-10-13 23:42:04,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:42:04,049 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 138 [2020-10-13 23:42:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:04,051 INFO L225 Difference]: With dead ends: 292 [2020-10-13 23:42:04,051 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 23:42:04,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:42:04,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 23:42:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 212. [2020-10-13 23:42:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-13 23:42:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 253 transitions. [2020-10-13 23:42:04,066 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 253 transitions. Word has length 138 [2020-10-13 23:42:04,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:04,066 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 253 transitions. [2020-10-13 23:42:04,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:42:04,066 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 253 transitions. [2020-10-13 23:42:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 23:42:04,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:04,068 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:04,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:42:04,068 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:04,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:04,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1192354940, now seen corresponding path program 24 times [2020-10-13 23:42:04,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:04,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767310829] [2020-10-13 23:42:04,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:09,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:09,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-13 23:42:09,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:42:09,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:42:09,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:09,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:09,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:42:09,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:42:09,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:42:09,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:09,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:09,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:09,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:09,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:09,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:09,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:09,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:42:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:09,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:09,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:09,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:09,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:09,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:09,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:09,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:09,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:42:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:09,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:09,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:09,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:09,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:09,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:09,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:42:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:09,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:09,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:09,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:09,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:09,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:09,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:09,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:42:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:09,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:09,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:09,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:09,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:09,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:09,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 23:42:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:09,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:09,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:09,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:09,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:09,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:09,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:09,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 10 proven. 169 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2020-10-13 23:42:09,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767310829] [2020-10-13 23:42:09,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:09,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:42:09,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439803136] [2020-10-13 23:42:09,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:42:09,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:09,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:42:09,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:42:09,259 INFO L87 Difference]: Start difference. First operand 212 states and 253 transitions. Second operand 17 states. [2020-10-13 23:42:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:09,390 INFO L93 Difference]: Finished difference Result 394 states and 476 transitions. [2020-10-13 23:42:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:42:09,391 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 141 [2020-10-13 23:42:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:09,393 INFO L225 Difference]: With dead ends: 394 [2020-10-13 23:42:09,393 INFO L226 Difference]: Without dead ends: 215 [2020-10-13 23:42:09,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:42:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-13 23:42:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2020-10-13 23:42:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-13 23:42:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 255 transitions. [2020-10-13 23:42:09,409 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 255 transitions. Word has length 141 [2020-10-13 23:42:09,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:09,409 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 255 transitions. [2020-10-13 23:42:09,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:42:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 255 transitions. [2020-10-13 23:42:09,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 23:42:09,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:09,410 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 14, 14, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:09,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 23:42:09,411 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:09,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1257789346, now seen corresponding path program 25 times [2020-10-13 23:42:09,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:09,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493973189] [2020-10-13 23:42:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:09,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:09,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:14,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:14,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 23:42:14,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:42:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:42:14,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:14,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 23:42:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:42:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:42:14,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:14,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:14,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:14,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:14,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:14,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:14,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:14,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:14,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:14,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:14,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:14,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:42:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:14,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:14,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:14,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:14,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:14,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:14,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:14,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:14,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:42:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:14,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:14,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:14,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:14,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:14,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:14,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:14,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:42:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:14,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:14,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:14,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:14,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:14,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:14,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:14,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:14,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:42:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:14,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:14,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:14,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:14,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:14,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:14,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:14,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:14,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:14,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:14,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:14,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:42:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:14,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:14,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:14,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:14,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:14,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:14,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:14,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 10 proven. 590 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 23:42:14,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493973189] [2020-10-13 23:42:14,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:14,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 23:42:14,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938500935] [2020-10-13 23:42:14,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 23:42:14,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:14,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 23:42:14,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:42:14,753 INFO L87 Difference]: Start difference. First operand 214 states and 255 transitions. Second operand 24 states. [2020-10-13 23:42:14,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:14,972 INFO L93 Difference]: Finished difference Result 300 states and 352 transitions. [2020-10-13 23:42:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:42:14,973 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 143 [2020-10-13 23:42:14,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:14,975 INFO L225 Difference]: With dead ends: 300 [2020-10-13 23:42:14,975 INFO L226 Difference]: Without dead ends: 224 [2020-10-13 23:42:14,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:42:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-13 23:42:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 220. [2020-10-13 23:42:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-13 23:42:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 263 transitions. [2020-10-13 23:42:14,990 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 263 transitions. Word has length 143 [2020-10-13 23:42:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:14,991 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 263 transitions. [2020-10-13 23:42:14,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 23:42:14,991 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 263 transitions. [2020-10-13 23:42:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 23:42:14,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:14,992 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 14, 14, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:14,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 23:42:14,993 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:14,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:14,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1767476884, now seen corresponding path program 26 times [2020-10-13 23:42:14,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:14,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633034395] [2020-10-13 23:42:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:15,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:20,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:20,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 23:42:20,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:42:20,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:42:20,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:20,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:42:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:42:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:42:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:20,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:20,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:20,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:20,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:20,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:20,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:42:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:20,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:20,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:20,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:20,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:20,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:20,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:20,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:20,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 23:42:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:20,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:20,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:20,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:20,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:20,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:20,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:20,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:20,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:20,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:20,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:20,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:42:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:20,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:20,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:20,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:20,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:20,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:20,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:20,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:20,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:20,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 23:42:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:20,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:20,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:20,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:20,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:20,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:20,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:20,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:20,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:20,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 23:42:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:20,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:20,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:20,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:20,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:20,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:20,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:20,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:20,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 10 proven. 196 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2020-10-13 23:42:20,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633034395] [2020-10-13 23:42:20,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:20,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:42:20,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982826002] [2020-10-13 23:42:20,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:42:20,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:20,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:42:20,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:42:20,194 INFO L87 Difference]: Start difference. First operand 220 states and 263 transitions. Second operand 18 states. [2020-10-13 23:42:20,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:20,323 INFO L93 Difference]: Finished difference Result 408 states and 494 transitions. [2020-10-13 23:42:20,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:42:20,324 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 146 [2020-10-13 23:42:20,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:20,326 INFO L225 Difference]: With dead ends: 408 [2020-10-13 23:42:20,326 INFO L226 Difference]: Without dead ends: 223 [2020-10-13 23:42:20,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:42:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-13 23:42:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2020-10-13 23:42:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-13 23:42:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 265 transitions. [2020-10-13 23:42:20,342 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 265 transitions. Word has length 146 [2020-10-13 23:42:20,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:20,342 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 265 transitions. [2020-10-13 23:42:20,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:42:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 265 transitions. [2020-10-13 23:42:20,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 23:42:20,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:20,344 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 15, 15, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:20,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 23:42:20,344 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:20,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1356011534, now seen corresponding path program 27 times [2020-10-13 23:42:20,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:20,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572978962] [2020-10-13 23:42:20,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:20,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:25,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:25,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 23:42:25,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:42:25,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:42:25,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:25,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:25,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 23:42:25,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 23:42:25,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 23:42:25,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:25,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:25,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:25,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:25,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:25,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:25,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:25,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 23:42:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:25,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:25,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:25,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:25,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:25,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:25,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:25,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 23:42:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:25,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:25,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:25,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:25,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:25,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:25,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-13 23:42:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:25,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:25,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:25,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:25,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:25,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:25,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-13 23:42:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:25,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:25,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:25,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:25,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:25,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:25,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:42:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:25,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:25,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:25,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:25,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:25,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:25,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:25,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:25,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:25,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 976 backedges. 10 proven. 651 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-13 23:42:25,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572978962] [2020-10-13 23:42:25,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:25,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 23:42:25,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37548133] [2020-10-13 23:42:25,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 23:42:25,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:25,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 23:42:25,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:42:25,718 INFO L87 Difference]: Start difference. First operand 222 states and 265 transitions. Second operand 25 states. [2020-10-13 23:42:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:25,914 INFO L93 Difference]: Finished difference Result 308 states and 362 transitions. [2020-10-13 23:42:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:42:25,915 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 148 [2020-10-13 23:42:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:25,917 INFO L225 Difference]: With dead ends: 308 [2020-10-13 23:42:25,917 INFO L226 Difference]: Without dead ends: 232 [2020-10-13 23:42:25,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:42:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-13 23:42:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 228. [2020-10-13 23:42:25,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-13 23:42:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 273 transitions. [2020-10-13 23:42:25,933 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 273 transitions. Word has length 148 [2020-10-13 23:42:25,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:25,934 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 273 transitions. [2020-10-13 23:42:25,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 23:42:25,934 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 273 transitions. [2020-10-13 23:42:25,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 23:42:25,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:25,935 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 15, 15, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:25,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 23:42:25,935 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:25,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:25,936 INFO L82 PathProgramCache]: Analyzing trace with hash -503002752, now seen corresponding path program 28 times [2020-10-13 23:42:25,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:25,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681762996] [2020-10-13 23:42:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:30,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:30,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 23:42:30,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:42:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:42:30,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:30,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:42:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:42:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:42:30,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:31,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:31,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:31,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:31,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:31,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:31,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:31,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:31,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:31,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:31,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:42:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:31,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:31,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:31,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:31,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:31,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:31,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:31,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:31,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:42:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:31,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:31,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:31,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:31,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:31,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:31,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:42:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:31,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:31,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:31,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:31,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:31,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:31,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:31,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:31,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:31,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:31,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:31,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:31,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:42:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:31,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:31,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:31,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:31,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:31,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:31,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:31,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:31,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:31,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:42:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:31,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:31,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:31,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:31,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:31,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:31,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:31,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:31,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:31,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:31,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:31,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 10 proven. 225 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-10-13 23:42:31,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681762996] [2020-10-13 23:42:31,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:31,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:42:31,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346072847] [2020-10-13 23:42:31,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:42:31,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:31,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:42:31,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:42:31,156 INFO L87 Difference]: Start difference. First operand 228 states and 273 transitions. Second operand 19 states. [2020-10-13 23:42:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:31,266 INFO L93 Difference]: Finished difference Result 422 states and 512 transitions. [2020-10-13 23:42:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:42:31,266 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 151 [2020-10-13 23:42:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:31,268 INFO L225 Difference]: With dead ends: 422 [2020-10-13 23:42:31,268 INFO L226 Difference]: Without dead ends: 231 [2020-10-13 23:42:31,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:42:31,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-13 23:42:31,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2020-10-13 23:42:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-13 23:42:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 275 transitions. [2020-10-13 23:42:31,287 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 275 transitions. Word has length 151 [2020-10-13 23:42:31,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:31,287 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 275 transitions. [2020-10-13 23:42:31,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:42:31,287 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 275 transitions. [2020-10-13 23:42:31,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-13 23:42:31,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:31,289 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 16, 16, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:31,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 23:42:31,289 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:31,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:31,290 INFO L82 PathProgramCache]: Analyzing trace with hash -62851042, now seen corresponding path program 29 times [2020-10-13 23:42:31,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:31,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756348275] [2020-10-13 23:42:31,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:31,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:36,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:36,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-13 23:42:36,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:42:36,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 23:42:36,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:36,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 23:42:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 23:42:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 23:42:36,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:36,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:36,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:36,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:36,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:36,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:36,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:36,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:36,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:42:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:36,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:36,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:36,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:36,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:42:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:36,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:36,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:36,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:36,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:36,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:36,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:36,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:36,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:42:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:36,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:36,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:36,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:36,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:36,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:36,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:36,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:42:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:36,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:36,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:36,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:36,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:36,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:36,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 23:42:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:36,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:36,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:36,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:36,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:36,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:36,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:36,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:36,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:36,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:42:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 10 proven. 715 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-13 23:42:36,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756348275] [2020-10-13 23:42:36,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:36,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 23:42:36,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797509911] [2020-10-13 23:42:36,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 23:42:36,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:36,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 23:42:36,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:42:36,753 INFO L87 Difference]: Start difference. First operand 230 states and 275 transitions. Second operand 26 states. [2020-10-13 23:42:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:37,010 INFO L93 Difference]: Finished difference Result 316 states and 372 transitions. [2020-10-13 23:42:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 23:42:37,010 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 153 [2020-10-13 23:42:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:37,012 INFO L225 Difference]: With dead ends: 316 [2020-10-13 23:42:37,012 INFO L226 Difference]: Without dead ends: 240 [2020-10-13 23:42:37,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:42:37,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-13 23:42:37,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 236. [2020-10-13 23:42:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-13 23:42:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 283 transitions. [2020-10-13 23:42:37,030 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 283 transitions. Word has length 153 [2020-10-13 23:42:37,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:37,031 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 283 transitions. [2020-10-13 23:42:37,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 23:42:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 283 transitions. [2020-10-13 23:42:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 23:42:37,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:37,033 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 16, 16, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:37,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 23:42:37,034 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:37,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:37,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1230122864, now seen corresponding path program 30 times [2020-10-13 23:42:37,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:37,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573815880] [2020-10-13 23:42:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:37,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:42,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 23:42:42,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:42:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 23:42:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:42,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 23:42:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 23:42:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 23:42:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:42,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:42,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:42,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:42,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:42,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:42,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:42,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 23:42:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:42,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:42,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:42,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:42,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:42,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:42,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:42,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:42,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:42,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-13 23:42:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:42,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:42,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:42,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:42,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:42,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:42,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:42,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:42,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:42,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-13 23:42:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:42,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:42,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:42,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:42,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:42,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:42,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:42,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:42,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:42:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:42,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:42,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:42,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:42,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:42,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:42,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:42,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-13 23:42:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:42,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:42,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:42,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:42,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:42,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:42,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:42,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 10 proven. 782 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2020-10-13 23:42:42,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573815880] [2020-10-13 23:42:42,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:42,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 23:42:42,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751003959] [2020-10-13 23:42:42,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 23:42:42,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:42,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 23:42:42,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:42:42,447 INFO L87 Difference]: Start difference. First operand 236 states and 283 transitions. Second operand 27 states. [2020-10-13 23:42:42,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:42,661 INFO L93 Difference]: Finished difference Result 322 states and 380 transitions. [2020-10-13 23:42:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 23:42:42,661 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 156 [2020-10-13 23:42:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:42,663 INFO L225 Difference]: With dead ends: 322 [2020-10-13 23:42:42,663 INFO L226 Difference]: Without dead ends: 246 [2020-10-13 23:42:42,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:42:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-13 23:42:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 242. [2020-10-13 23:42:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-13 23:42:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2020-10-13 23:42:42,679 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 156 [2020-10-13 23:42:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:42,679 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2020-10-13 23:42:42,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 23:42:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2020-10-13 23:42:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 23:42:42,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:42,680 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 16, 16, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:42,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 23:42:42,681 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1345921314, now seen corresponding path program 31 times [2020-10-13 23:42:42,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:42,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711638353] [2020-10-13 23:42:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:42,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:42,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:47,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:47,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 23:42:47,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:42:47,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 23:42:47,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:47,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:42:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:42:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 23:42:47,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:47,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:47,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:47,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:47,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:47,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:47,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:47,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:47,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:47,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:47,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:47,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:42:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:47,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:47,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:47,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:47,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:47,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:42:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:47,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:47,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:47,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:47,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:47,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:47,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:47,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:47,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:42:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:47,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:47,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:47,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:47,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:47,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:47,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:47,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:42:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:47,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:47,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:47,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:47,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:47,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 23:42:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:47,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:47,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:47,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:47,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:47,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:47,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 10 proven. 256 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2020-10-13 23:42:47,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711638353] [2020-10-13 23:42:47,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:47,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:42:47,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519745421] [2020-10-13 23:42:47,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:42:47,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:47,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:42:47,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:42:47,938 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand 20 states. [2020-10-13 23:42:48,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:48,071 INFO L93 Difference]: Finished difference Result 448 states and 546 transitions. [2020-10-13 23:42:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:42:48,071 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 159 [2020-10-13 23:42:48,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:48,073 INFO L225 Difference]: With dead ends: 448 [2020-10-13 23:42:48,073 INFO L226 Difference]: Without dead ends: 245 [2020-10-13 23:42:48,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:42:48,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-13 23:42:48,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2020-10-13 23:42:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-13 23:42:48,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 293 transitions. [2020-10-13 23:42:48,087 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 293 transitions. Word has length 159 [2020-10-13 23:42:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:48,087 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 293 transitions. [2020-10-13 23:42:48,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:42:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 293 transitions. [2020-10-13 23:42:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 23:42:48,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:48,089 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 17, 17, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:48,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 23:42:48,089 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:48,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1674473604, now seen corresponding path program 32 times [2020-10-13 23:42:48,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:48,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928137179] [2020-10-13 23:42:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:48,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:53,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:53,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 23:42:53,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:42:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:42:53,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:53,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 23:42:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 23:42:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 23:42:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:53,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:42:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:53,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:53,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:42:53,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:53,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:53,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:42:53,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:53,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:53,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:42:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:53,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:53,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:53,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:53,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:53,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:53,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:53,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:53,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:53,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:53,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:53,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:53,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:42:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:53,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:53,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:53,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:53,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:53,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:53,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:53,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:53,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:53,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:53,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:42:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:53,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:53,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:53,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:53,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:53,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:53,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:53,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 23:42:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:53,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:53,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:53,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:53,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:53,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:42:53,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:53,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:53,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:53,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:53,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-13 23:42:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:53,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:53,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:42:53,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:42:53,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:42:53,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:42:53,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:42:53,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:42:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:42:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:42:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:42:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:42:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 10 proven. 852 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-13 23:42:53,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928137179] [2020-10-13 23:42:53,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:42:53,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 23:42:53,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383090361] [2020-10-13 23:42:53,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 23:42:53,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:42:53,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 23:42:53,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:42:53,529 INFO L87 Difference]: Start difference. First operand 244 states and 293 transitions. Second operand 28 states. [2020-10-13 23:42:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:42:53,782 INFO L93 Difference]: Finished difference Result 330 states and 390 transitions. [2020-10-13 23:42:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 23:42:53,783 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 161 [2020-10-13 23:42:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:42:53,784 INFO L225 Difference]: With dead ends: 330 [2020-10-13 23:42:53,785 INFO L226 Difference]: Without dead ends: 254 [2020-10-13 23:42:53,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:42:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-13 23:42:53,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2020-10-13 23:42:53,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 23:42:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 301 transitions. [2020-10-13 23:42:53,800 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 301 transitions. Word has length 161 [2020-10-13 23:42:53,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:42:53,801 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 301 transitions. [2020-10-13 23:42:53,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 23:42:53,801 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 301 transitions. [2020-10-13 23:42:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 23:42:53,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:42:53,802 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 17, 17, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:42:53,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 23:42:53,802 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:42:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:42:53,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1473186990, now seen corresponding path program 33 times [2020-10-13 23:42:53,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:42:53,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467129542] [2020-10-13 23:42:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:42:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:42:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:42:53,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking...