/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 SingleStatement --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:23:17,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:23:17,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:23:17,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:23:17,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:23:17,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:23:17,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:23:17,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:23:17,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:23:17,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:23:17,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:23:17,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:23:17,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:23:17,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:23:17,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:23:17,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:23:17,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:23:17,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:23:17,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:23:17,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:23:17,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:23:17,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:23:17,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:23:17,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:23:17,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:23:17,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:23:17,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:23:17,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:23:17,558 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:23:17,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:23:17,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:23:17,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:23:17,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:23:17,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:23:17,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:23:17,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:23:17,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:23:17,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:23:17,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:23:17,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:23:17,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:23:17,569 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 [2020-09-25 04:23:17,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:23:17,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:23:17,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:23:17,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:23:17,620 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:23:17,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:23:17,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:23:17,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:23:17,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:23:17,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:23:17,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:23:17,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:23:17,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:23:17,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:23:17,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:23:17,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:23:17,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:23:17,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:23:17,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:23:17,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:23:17,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:23:17,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:23:17,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:23:17,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:23:17,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:23:17,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:23:17,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:23:17,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:23:17,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:23:17,627 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 -> SingleStatement 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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=true; [2020-09-25 04:23:18,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:23:18,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:23:18,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:23:18,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:23:18,124 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:23:18,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-2.c [2020-09-25 04:23:18,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32e6d293e/2d6272b8d5ae4aab83cc3f9d51959ae5/FLAG526ded245 [2020-09-25 04:23:18,784 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:23:18,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-2.c [2020-09-25 04:23:18,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32e6d293e/2d6272b8d5ae4aab83cc3f9d51959ae5/FLAG526ded245 [2020-09-25 04:23:19,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32e6d293e/2d6272b8d5ae4aab83cc3f9d51959ae5 [2020-09-25 04:23:19,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:23:19,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:23:19,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:19,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:23:19,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:23:19,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603503a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19, skipping insertion in model container [2020-09-25 04:23:19,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:23:19,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:23:19,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:19,430 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:23:19,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:19,565 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:23:19,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19 WrapperNode [2020-09-25 04:23:19,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:19,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:23:19,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:23:19,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:23:19,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:23:19,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:23:19,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:23:19,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:23:19,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (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 [2020-09-25 04:23:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:23:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:23:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 04:23:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:23:19,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:23:19,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:23:19,697 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 04:23:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:23:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:23:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:23:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:23:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:23:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:23:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:23:20,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:23:20,035 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 04:23:20,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:20 BoogieIcfgContainer [2020-09-25 04:23:20,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:23:20,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:23:20,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:23:20,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:23:20,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:23:19" (1/3) ... [2020-09-25 04:23:20,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e076fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:20, skipping insertion in model container [2020-09-25 04:23:20,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (2/3) ... [2020-09-25 04:23:20,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e076fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:20, skipping insertion in model container [2020-09-25 04:23:20,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:20" (3/3) ... [2020-09-25 04:23:20,051 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-2.c [2020-09-25 04:23:20,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:23:20,073 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:23:20,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:23:20,126 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:23:20,126 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:23:20,126 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:23:20,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:23:20,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:23:20,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:23:20,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:23:20,127 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:23:20,150 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-09-25 04:23:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 04:23:20,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:20,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:20,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:20,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:20,166 INFO L82 PathProgramCache]: Analyzing trace with hash 2031307650, now seen corresponding path program 1 times [2020-09-25 04:23:20,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:20,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813052601] [2020-09-25 04:23:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:20,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:20,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:23:20,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:20,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 04:23:20,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:20,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:20,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:23:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:23:20,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:20,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:20,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:20,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:23:20,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:20,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:20,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:23:20,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 04:23:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:20,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:20,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:20,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:23:20,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:20,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:20,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:20,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:20,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813052601] [2020-09-25 04:23:20,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:20,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:23:20,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743833966] [2020-09-25 04:23:20,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:23:20,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:20,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:23:20,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:23:20,821 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-09-25 04:23:21,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:21,019 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-09-25 04:23:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:23:21,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-09-25 04:23:21,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:21,037 INFO L225 Difference]: With dead ends: 102 [2020-09-25 04:23:21,037 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 04:23:21,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:23:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 04:23:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 04:23:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 04:23:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 04:23:21,110 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 37 [2020-09-25 04:23:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:21,111 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 04:23:21,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:23:21,111 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 04:23:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 04:23:21,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:21,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:21,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:23:21,117 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:21,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:21,119 INFO L82 PathProgramCache]: Analyzing trace with hash 897550373, now seen corresponding path program 1 times [2020-09-25 04:23:21,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:21,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333521155] [2020-09-25 04:23:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:21,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:21,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:23:21,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:21,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 04:23:21,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:21,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:23:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:23:21,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:21,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:21,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:21,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:21,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:21,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:21,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:21,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:21,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:23:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:21,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:21,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:21,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:21,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:21,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:23:21,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:21,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:21,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:21,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333521155] [2020-09-25 04:23:21,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:21,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:23:21,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788587340] [2020-09-25 04:23:21,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:23:21,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:21,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:23:21,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:23:21,451 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 4 states. [2020-09-25 04:23:21,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:21,589 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-09-25 04:23:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:23:21,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-25 04:23:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:21,591 INFO L225 Difference]: With dead ends: 92 [2020-09-25 04:23:21,592 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 04:23:21,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:23:21,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 04:23:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 04:23:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 04:23:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-25 04:23:21,603 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 39 [2020-09-25 04:23:21,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:21,604 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-25 04:23:21,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:23:21,604 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-25 04:23:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 04:23:21,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:21,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:21,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:23:21,606 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:21,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1785369867, now seen corresponding path program 1 times [2020-09-25 04:23:21,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:21,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457063005] [2020-09-25 04:23:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:21,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 04:23:21,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 04:23:21,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:21,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:23:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 04:23:21,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:21,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:21,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:23:21,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:21,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:21,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 04:23:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:21,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:21,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:21,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:21,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:21,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:23:21,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:21,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:21,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:21,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457063005] [2020-09-25 04:23:21,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:21,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:23:21,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120907543] [2020-09-25 04:23:21,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:23:21,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:21,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:23:21,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:23:21,983 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 6 states. [2020-09-25 04:23:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:22,186 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-09-25 04:23:22,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:23:22,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-25 04:23:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:22,188 INFO L225 Difference]: With dead ends: 102 [2020-09-25 04:23:22,190 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 04:23:22,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:23:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 04:23:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-09-25 04:23:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 04:23:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-09-25 04:23:22,208 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 49 [2020-09-25 04:23:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:22,209 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-09-25 04:23:22,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:23:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-09-25 04:23:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 04:23:22,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:22,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:22,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:23:22,215 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:22,216 INFO L82 PathProgramCache]: Analyzing trace with hash 862927473, now seen corresponding path program 2 times [2020-09-25 04:23:22,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:22,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600076943] [2020-09-25 04:23:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:22,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:22,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:23:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-25 04:23:22,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:22,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:23:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:22,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:23:22,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:22,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:22,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:22,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:22,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:22,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:22,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:22,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:22,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:22,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:22,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 04:23:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:22,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:22,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:22,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:22,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:23:22,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:22,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:22,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600076943] [2020-09-25 04:23:22,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:22,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:23:22,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387985838] [2020-09-25 04:23:22,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:23:22,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:22,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:23:22,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:23:22,692 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 8 states. [2020-09-25 04:23:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:22,964 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2020-09-25 04:23:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:23:22,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-09-25 04:23:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:22,966 INFO L225 Difference]: With dead ends: 112 [2020-09-25 04:23:22,966 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 04:23:22,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:23:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 04:23:22,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2020-09-25 04:23:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 04:23:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-09-25 04:23:22,985 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 59 [2020-09-25 04:23:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:22,986 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-09-25 04:23:22,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:23:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-09-25 04:23:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:23:22,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:22,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:22,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:23:22,989 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:22,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1103681623, now seen corresponding path program 3 times [2020-09-25 04:23:22,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:22,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602941679] [2020-09-25 04:23:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:23,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:23,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:23:23,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-25 04:23:23,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:23,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:23:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:23:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:23,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:23,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:23,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:23,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:23,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:23,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:23,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:23,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 04:23:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:23,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:23,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:23,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:23:23,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:23,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:23,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:23,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:23,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:23:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:23,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602941679] [2020-09-25 04:23:23,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:23,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 04:23:23,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815021253] [2020-09-25 04:23:23,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:23:23,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:23,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:23:23,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:23:23,552 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 10 states. [2020-09-25 04:23:23,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:23,756 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2020-09-25 04:23:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 04:23:23,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-25 04:23:23,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:23,758 INFO L225 Difference]: With dead ends: 122 [2020-09-25 04:23:23,758 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 04:23:23,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:23:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 04:23:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-09-25 04:23:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 04:23:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-09-25 04:23:23,767 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 69 [2020-09-25 04:23:23,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:23,767 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-09-25 04:23:23,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:23:23,768 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-09-25 04:23:23,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 04:23:23,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:23,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:23,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:23:23,770 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:23,770 INFO L82 PathProgramCache]: Analyzing trace with hash -67449155, now seen corresponding path program 4 times [2020-09-25 04:23:23,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:23,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641563404] [2020-09-25 04:23:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:24,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:24,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:23:24,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 04:23:24,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:24,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:23:24,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:24,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:23:24,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:24,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:24,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:24,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:24,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:24,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:23:24,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:24,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:24,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 04:23:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:24,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:24,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:24,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:24,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:24,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:24,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:24,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:24,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641563404] [2020-09-25 04:23:24,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:24,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 04:23:24,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447946849] [2020-09-25 04:23:24,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:23:24,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:24,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:23:24,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:23:24,415 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 12 states. [2020-09-25 04:23:24,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:24,658 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2020-09-25 04:23:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 04:23:24,658 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-09-25 04:23:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:24,660 INFO L225 Difference]: With dead ends: 132 [2020-09-25 04:23:24,660 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 04:23:24,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 04:23:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 04:23:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2020-09-25 04:23:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 04:23:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-09-25 04:23:24,668 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 79 [2020-09-25 04:23:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:24,669 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-09-25 04:23:24,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:23:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-09-25 04:23:24,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 04:23:24,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:24,674 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:24,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:23:24,675 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:24,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:24,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2083488349, now seen corresponding path program 5 times [2020-09-25 04:23:24,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:24,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844115562] [2020-09-25 04:23:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:25,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:25,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:23:25,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:25,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-09-25 04:23:25,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:25,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:23:25,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:25,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 04:23:25,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:25,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:25,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:25,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:23:25,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:25,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:25,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 04:23:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:25,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:25,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:25,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:25,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:25,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:25,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:25,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:25,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844115562] [2020-09-25 04:23:25,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:25,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 04:23:25,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565561105] [2020-09-25 04:23:25,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 04:23:25,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:25,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 04:23:25,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 04:23:25,461 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 14 states. [2020-09-25 04:23:25,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:25,772 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2020-09-25 04:23:25,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 04:23:25,773 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2020-09-25 04:23:25,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:25,775 INFO L225 Difference]: With dead ends: 142 [2020-09-25 04:23:25,775 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 04:23:25,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-09-25 04:23:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 04:23:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 104. [2020-09-25 04:23:25,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 04:23:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2020-09-25 04:23:25,783 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 89 [2020-09-25 04:23:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:25,783 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2020-09-25 04:23:25,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 04:23:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2020-09-25 04:23:25,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 04:23:25,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:25,785 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:25,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:23:25,785 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:25,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:25,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1012745481, now seen corresponding path program 6 times [2020-09-25 04:23:25,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:25,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074790544] [2020-09-25 04:23:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:25,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:26,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:26,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 04:23:26,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:26,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-09-25 04:23:26,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:26,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:23:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:26,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 04:23:26,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:26,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:26,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:26,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:26,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:26,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:23:26,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:26,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:26,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:26,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 04:23:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:26,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:26,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:26,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:26,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:23:26,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:26,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:26,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:26,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074790544] [2020-09-25 04:23:26,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:26,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 04:23:26,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635582766] [2020-09-25 04:23:26,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 04:23:26,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:26,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 04:23:26,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:23:26,851 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand 16 states. [2020-09-25 04:23:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:27,282 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2020-09-25 04:23:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 04:23:27,282 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-09-25 04:23:27,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:27,285 INFO L225 Difference]: With dead ends: 152 [2020-09-25 04:23:27,285 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 04:23:27,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-25 04:23:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 04:23:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2020-09-25 04:23:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 04:23:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2020-09-25 04:23:27,300 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 99 [2020-09-25 04:23:27,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:27,302 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2020-09-25 04:23:27,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 04:23:27,302 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2020-09-25 04:23:27,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 04:23:27,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:27,303 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:27,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:23:27,306 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:27,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:27,306 INFO L82 PathProgramCache]: Analyzing trace with hash -805534481, now seen corresponding path program 7 times [2020-09-25 04:23:27,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:27,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919525467] [2020-09-25 04:23:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:27,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:28,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:28,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 04:23:28,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:28,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-09-25 04:23:28,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:28,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 04:23:28,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:28,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 04:23:28,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:23:28,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:28,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:28,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:28,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:23:28,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:28,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:28,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-25 04:23:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:28,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:28,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:28,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:23:28,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:28,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:28,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919525467] [2020-09-25 04:23:28,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:28,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 04:23:28,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586499760] [2020-09-25 04:23:28,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 04:23:28,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:28,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 04:23:28,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-25 04:23:28,629 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 18 states. [2020-09-25 04:23:29,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:29,103 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2020-09-25 04:23:29,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 04:23:29,104 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 109 [2020-09-25 04:23:29,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:29,105 INFO L225 Difference]: With dead ends: 162 [2020-09-25 04:23:29,105 INFO L226 Difference]: Without dead ends: 132 [2020-09-25 04:23:29,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-09-25 04:23:29,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-25 04:23:29,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2020-09-25 04:23:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-25 04:23:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2020-09-25 04:23:29,118 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 109 [2020-09-25 04:23:29,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:29,119 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2020-09-25 04:23:29,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 04:23:29,119 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2020-09-25 04:23:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 04:23:29,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:29,121 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:29,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 04:23:29,121 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:29,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:29,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1236165291, now seen corresponding path program 8 times [2020-09-25 04:23:29,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:29,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283267215] [2020-09-25 04:23:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:30,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:30,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 04:23:30,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:30,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1175 [2020-09-25 04:23:30,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:30,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 04:23:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 04:23:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:30,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:30,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:30,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:30,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:23:30,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:30,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:30,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:30,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:30,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 04:23:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:30,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:30,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:30,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:30,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:30,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:30,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:30,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:30,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:30,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283267215] [2020-09-25 04:23:30,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:30,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 04:23:30,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688516065] [2020-09-25 04:23:30,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 04:23:30,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:30,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 04:23:30,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-09-25 04:23:30,615 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand 20 states. [2020-09-25 04:23:31,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:31,124 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-09-25 04:23:31,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 04:23:31,125 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 119 [2020-09-25 04:23:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:31,127 INFO L225 Difference]: With dead ends: 172 [2020-09-25 04:23:31,127 INFO L226 Difference]: Without dead ends: 142 [2020-09-25 04:23:31,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 04:23:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-25 04:23:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-09-25 04:23:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 04:23:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 135 transitions. [2020-09-25 04:23:31,138 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 135 transitions. Word has length 119 [2020-09-25 04:23:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:31,140 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 135 transitions. [2020-09-25 04:23:31,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 04:23:31,140 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 135 transitions. [2020-09-25 04:23:31,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 04:23:31,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:31,143 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:31,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 04:23:31,145 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:31,146 INFO L82 PathProgramCache]: Analyzing trace with hash 977792571, now seen corresponding path program 9 times [2020-09-25 04:23:31,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:31,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800350253] [2020-09-25 04:23:31,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:31,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:32,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:32,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 04:23:32,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:32,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-09-25 04:23:32,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:32,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 04:23:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 04:23:32,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:32,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:32,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:32,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:32,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:32,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:32,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:23:32,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:32,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:32,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 04:23:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:32,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:33,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:33,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:33,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:33,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:23:33,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:33,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:33,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:33,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:33,035 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:33,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800350253] [2020-09-25 04:23:33,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:33,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 04:23:33,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949345405] [2020-09-25 04:23:33,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 04:23:33,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:33,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 04:23:33,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-09-25 04:23:33,038 INFO L87 Difference]: Start difference. First operand 134 states and 135 transitions. Second operand 22 states. [2020-09-25 04:23:33,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:33,605 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2020-09-25 04:23:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-25 04:23:33,606 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 129 [2020-09-25 04:23:33,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:33,607 INFO L225 Difference]: With dead ends: 182 [2020-09-25 04:23:33,607 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 04:23:33,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 04:23:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 04:23:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2020-09-25 04:23:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 04:23:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2020-09-25 04:23:33,614 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 129 [2020-09-25 04:23:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:33,614 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2020-09-25 04:23:33,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 04:23:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2020-09-25 04:23:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 04:23:33,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:33,616 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:33,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 04:23:33,617 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:33,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:33,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1234849, now seen corresponding path program 10 times [2020-09-25 04:23:33,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:33,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787675324] [2020-09-25 04:23:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:33,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:35,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:35,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 04:23:35,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:35,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-09-25 04:23:35,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:35,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 04:23:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 04:23:35,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:35,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:35,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:35,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:35,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:35,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:35,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:23:35,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:35,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:35,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-25 04:23:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:35,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:35,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:35,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:35,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:23:35,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:35,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:35,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787675324] [2020-09-25 04:23:35,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:35,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 04:23:35,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700022666] [2020-09-25 04:23:35,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 04:23:35,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:35,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 04:23:35,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-25 04:23:35,620 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 24 states. [2020-09-25 04:23:36,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:36,216 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-09-25 04:23:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 04:23:36,217 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 139 [2020-09-25 04:23:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:36,218 INFO L225 Difference]: With dead ends: 192 [2020-09-25 04:23:36,219 INFO L226 Difference]: Without dead ends: 162 [2020-09-25 04:23:36,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=605, Invalid=1287, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 04:23:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-25 04:23:36,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2020-09-25 04:23:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 04:23:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 155 transitions. [2020-09-25 04:23:36,225 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 155 transitions. Word has length 139 [2020-09-25 04:23:36,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:36,226 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 155 transitions. [2020-09-25 04:23:36,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 04:23:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 155 transitions. [2020-09-25 04:23:36,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 04:23:36,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:36,228 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:36,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 04:23:36,228 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:36,229 INFO L82 PathProgramCache]: Analyzing trace with hash 187545991, now seen corresponding path program 11 times [2020-09-25 04:23:36,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:36,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455551745] [2020-09-25 04:23:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:38,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:38,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 04:23:38,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1886 [2020-09-25 04:23:38,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:38,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 04:23:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 04:23:38,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:38,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:38,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:38,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:38,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:23:38,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:38,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:38,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:38,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:38,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:38,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-25 04:23:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:38,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:38,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:38,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:38,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:38,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:38,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:38,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455551745] [2020-09-25 04:23:38,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:38,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 04:23:38,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564691024] [2020-09-25 04:23:38,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 04:23:38,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:38,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 04:23:38,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-09-25 04:23:38,617 INFO L87 Difference]: Start difference. First operand 154 states and 155 transitions. Second operand 26 states. [2020-09-25 04:23:39,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:39,226 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2020-09-25 04:23:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-25 04:23:39,227 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 149 [2020-09-25 04:23:39,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:39,228 INFO L225 Difference]: With dead ends: 202 [2020-09-25 04:23:39,228 INFO L226 Difference]: Without dead ends: 172 [2020-09-25 04:23:39,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=720, Invalid=1536, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 04:23:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-25 04:23:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 164. [2020-09-25 04:23:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 04:23:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2020-09-25 04:23:39,239 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 149 [2020-09-25 04:23:39,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:39,240 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2020-09-25 04:23:39,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 04:23:39,240 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2020-09-25 04:23:39,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 04:23:39,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:39,242 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:39,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 04:23:39,242 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:39,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:39,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1146876909, now seen corresponding path program 12 times [2020-09-25 04:23:39,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:39,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461002488] [2020-09-25 04:23:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:39,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:41,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:41,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 04:23:41,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:41,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2077 [2020-09-25 04:23:41,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:41,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 04:23:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:41,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 04:23:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:41,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:41,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:41,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:41,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:41,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:23:41,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:41,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:41,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:41,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:41,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:41,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:41,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-25 04:23:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:41,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:41,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:41,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:23:41,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:41,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:41,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:41,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461002488] [2020-09-25 04:23:41,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:41,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-25 04:23:41,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456112542] [2020-09-25 04:23:41,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-25 04:23:41,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:41,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-25 04:23:41,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-09-25 04:23:41,815 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand 28 states. [2020-09-25 04:23:42,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:42,629 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2020-09-25 04:23:42,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-25 04:23:42,630 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 159 [2020-09-25 04:23:42,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:42,631 INFO L225 Difference]: With dead ends: 212 [2020-09-25 04:23:42,631 INFO L226 Difference]: Without dead ends: 182 [2020-09-25 04:23:42,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=845, Invalid=1807, Unknown=0, NotChecked=0, Total=2652 [2020-09-25 04:23:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-25 04:23:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2020-09-25 04:23:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 04:23:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 175 transitions. [2020-09-25 04:23:42,642 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 175 transitions. Word has length 159 [2020-09-25 04:23:42,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:42,643 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 175 transitions. [2020-09-25 04:23:42,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-25 04:23:42,643 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 175 transitions. [2020-09-25 04:23:42,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 04:23:42,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:42,645 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:42,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 04:23:42,645 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:42,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:42,646 INFO L82 PathProgramCache]: Analyzing trace with hash 2141775571, now seen corresponding path program 13 times [2020-09-25 04:23:42,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:42,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913620288] [2020-09-25 04:23:42,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:42,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:45,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:45,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 04:23:45,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:45,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2415 [2020-09-25 04:23:45,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:45,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 04:23:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:45,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 04:23:45,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:45,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:45,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:45,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:45,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:45,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:45,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:23:45,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:45,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:45,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:45,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:45,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-25 04:23:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:45,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:45,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:45,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:45,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:23:45,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:45,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:45,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913620288] [2020-09-25 04:23:45,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:45,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-09-25 04:23:45,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385299815] [2020-09-25 04:23:45,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-09-25 04:23:45,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:45,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-09-25 04:23:45,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-09-25 04:23:45,777 INFO L87 Difference]: Start difference. First operand 174 states and 175 transitions. Second operand 30 states. [2020-09-25 04:23:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:46,778 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2020-09-25 04:23:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 04:23:46,779 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 169 [2020-09-25 04:23:46,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:46,780 INFO L225 Difference]: With dead ends: 222 [2020-09-25 04:23:46,780 INFO L226 Difference]: Without dead ends: 192 [2020-09-25 04:23:46,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=980, Invalid=2100, Unknown=0, NotChecked=0, Total=3080 [2020-09-25 04:23:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-25 04:23:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 184. [2020-09-25 04:23:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-25 04:23:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2020-09-25 04:23:46,788 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 169 [2020-09-25 04:23:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:46,789 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2020-09-25 04:23:46,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-09-25 04:23:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2020-09-25 04:23:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 04:23:46,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:46,791 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:46,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 04:23:46,792 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:46,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:46,792 INFO L82 PathProgramCache]: Analyzing trace with hash 40366649, now seen corresponding path program 14 times [2020-09-25 04:23:46,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:46,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435668252] [2020-09-25 04:23:46,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:49,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:49,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 04:23:49,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:49,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2594 [2020-09-25 04:23:49,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:49,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 04:23:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:49,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 04:23:49,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:49,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:49,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:49,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:23:49,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:49,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:49,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:49,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-25 04:23:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:49,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:49,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:49,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:49,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:23:49,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:49,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:49,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:49,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:49,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:49,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:50,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435668252] [2020-09-25 04:23:50,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:50,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-09-25 04:23:50,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677876931] [2020-09-25 04:23:50,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-25 04:23:50,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:50,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-25 04:23:50,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-09-25 04:23:50,017 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand 32 states. [2020-09-25 04:23:51,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:51,046 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2020-09-25 04:23:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-25 04:23:51,046 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 179 [2020-09-25 04:23:51,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:51,048 INFO L225 Difference]: With dead ends: 232 [2020-09-25 04:23:51,048 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 04:23:51,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1125, Invalid=2415, Unknown=0, NotChecked=0, Total=3540 [2020-09-25 04:23:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 04:23:51,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 194. [2020-09-25 04:23:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-25 04:23:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2020-09-25 04:23:51,056 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 179 [2020-09-25 04:23:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:51,056 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2020-09-25 04:23:51,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-25 04:23:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2020-09-25 04:23:51,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 04:23:51,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:51,059 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:51,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 04:23:51,059 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:51,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:51,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1993050593, now seen corresponding path program 15 times [2020-09-25 04:23:51,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:51,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115838333] [2020-09-25 04:23:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:53,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:53,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 04:23:53,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:53,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2531 [2020-09-25 04:23:53,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:53,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:53,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 04:23:53,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:53,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 04:23:53,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:54,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:54,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:54,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:23:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:54,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:54,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-25 04:23:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:54,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:54,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:54,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:54,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:23:54,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:54,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:54,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:54,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115838333] [2020-09-25 04:23:54,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:54,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-25 04:23:54,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219849976] [2020-09-25 04:23:54,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-25 04:23:54,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:54,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-25 04:23:54,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 04:23:54,329 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand 34 states. [2020-09-25 04:23:55,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:55,477 INFO L93 Difference]: Finished difference Result 242 states and 244 transitions. [2020-09-25 04:23:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-25 04:23:55,478 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 189 [2020-09-25 04:23:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:55,479 INFO L225 Difference]: With dead ends: 242 [2020-09-25 04:23:55,479 INFO L226 Difference]: Without dead ends: 212 [2020-09-25 04:23:55,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1280, Invalid=2752, Unknown=0, NotChecked=0, Total=4032 [2020-09-25 04:23:55,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-25 04:23:55,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 204. [2020-09-25 04:23:55,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-25 04:23:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2020-09-25 04:23:55,488 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 189 [2020-09-25 04:23:55,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:55,488 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2020-09-25 04:23:55,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-25 04:23:55,489 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2020-09-25 04:23:55,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 04:23:55,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:55,491 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:55,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 04:23:55,492 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:55,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:55,492 INFO L82 PathProgramCache]: Analyzing trace with hash -839789947, now seen corresponding path program 16 times [2020-09-25 04:23:55,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:55,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184566708] [2020-09-25 04:23:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:58,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:58,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 04:23:58,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2868 [2020-09-25 04:23:58,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:58,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-25 04:23:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:23:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 04:23:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:59,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:59,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:59,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:59,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:23:59,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:59,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-25 04:23:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:59,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:59,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:59,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:59,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:23:59,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:59,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:23:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:59,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184566708] [2020-09-25 04:23:59,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:59,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-09-25 04:23:59,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037359618] [2020-09-25 04:23:59,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-25 04:23:59,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:59,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-25 04:23:59,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 04:23:59,174 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand 36 states. [2020-09-25 04:24:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:00,561 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2020-09-25 04:24:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-09-25 04:24:00,562 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 199 [2020-09-25 04:24:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:00,564 INFO L225 Difference]: With dead ends: 252 [2020-09-25 04:24:00,564 INFO L226 Difference]: Without dead ends: 222 [2020-09-25 04:24:00,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1445, Invalid=3111, Unknown=0, NotChecked=0, Total=4556 [2020-09-25 04:24:00,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-25 04:24:00,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 214. [2020-09-25 04:24:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-25 04:24:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2020-09-25 04:24:00,585 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 199 [2020-09-25 04:24:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:00,586 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2020-09-25 04:24:00,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-25 04:24:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2020-09-25 04:24:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 04:24:00,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:00,590 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:00,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 04:24:00,591 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:00,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:00,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1916049557, now seen corresponding path program 17 times [2020-09-25 04:24:00,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:00,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077680063] [2020-09-25 04:24:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:00,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:03,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:03,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 04:24:03,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:03,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3123 [2020-09-25 04:24:03,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:03,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:03,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-25 04:24:03,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:24:03,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 04:24:03,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:04,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:04,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:04,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:04,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:04,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:24:04,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:04,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:04,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-25 04:24:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:04,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:24:04,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:04,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:04,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:24:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1377 backedges. 0 proven. 1377 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:24:04,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077680063] [2020-09-25 04:24:04,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:04,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-09-25 04:24:04,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409455592] [2020-09-25 04:24:04,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-25 04:24:04,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:04,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-25 04:24:04,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 04:24:04,600 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand 38 states. [2020-09-25 04:24:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:06,179 INFO L93 Difference]: Finished difference Result 262 states and 264 transitions. [2020-09-25 04:24:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-09-25 04:24:06,179 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 209 [2020-09-25 04:24:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:06,182 INFO L225 Difference]: With dead ends: 262 [2020-09-25 04:24:06,182 INFO L226 Difference]: Without dead ends: 232 [2020-09-25 04:24:06,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1620, Invalid=3492, Unknown=0, NotChecked=0, Total=5112 [2020-09-25 04:24:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-25 04:24:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2020-09-25 04:24:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 04:24:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2020-09-25 04:24:06,198 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 209 [2020-09-25 04:24:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:06,198 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2020-09-25 04:24:06,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-09-25 04:24:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2020-09-25 04:24:06,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 04:24:06,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:06,201 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:06,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 04:24:06,201 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:06,202 INFO L82 PathProgramCache]: Analyzing trace with hash 255104209, now seen corresponding path program 18 times [2020-09-25 04:24:06,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:06,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223438438] [2020-09-25 04:24:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:09,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:09,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 04:24:09,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:09,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3675 [2020-09-25 04:24:09,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:09,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:09,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 04:24:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:24:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-25 04:24:09,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1