/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:04:28,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:04:28,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:04:28,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:04:28,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:04:28,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:04:28,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:04:28,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:04:28,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:04:28,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:04:28,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:04:28,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:04:28,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:04:28,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:04:28,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:04:28,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:04:28,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:04:28,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:04:28,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:04:28,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:04:28,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:04:28,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:04:28,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:04:28,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:04:28,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:04:28,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:04:28,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:04:28,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:04:28,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:04:28,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:04:28,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:04:28,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:04:28,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:04:28,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:04:28,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:04:28,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:04:28,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:04:28,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:04:28,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:04:28,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:04:28,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:04:28,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 00:04:28,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:04:28,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:04:28,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:04:28,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:04:28,557 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:04:28,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:04:28,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:04:28,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:04:28,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:04:28,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:04:28,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:04:28,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:04:28,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:04:28,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:04:28,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:04:28,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:04:28,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:04:28,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:04:28,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:04:28,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:04:28,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:04:28,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:04:28,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:04:28,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:04:28,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:04:28,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:04:28,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:04:28,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:04:28,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:04:28,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:04:28,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:04:28,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:04:28,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:04:28,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:04:28,858 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:04:28,858 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested3-1.c [2020-10-15 00:04:28,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88122a084/a05783263f7249aaa54d67bd0c563b7f/FLAGe6184ce26 [2020-10-15 00:04:29,343 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:04:29,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested3-1.c [2020-10-15 00:04:29,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88122a084/a05783263f7249aaa54d67bd0c563b7f/FLAGe6184ce26 [2020-10-15 00:04:29,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88122a084/a05783263f7249aaa54d67bd0c563b7f [2020-10-15 00:04:29,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:04:29,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:04:29,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:04:29,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:04:29,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:04:29,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:29" (1/1) ... [2020-10-15 00:04:29,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92e95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29, skipping insertion in model container [2020-10-15 00:04:29,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:29" (1/1) ... [2020-10-15 00:04:29,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:04:29,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:04:29,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:04:29,976 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:04:29,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:04:30,002 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:04:30,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:30 WrapperNode [2020-10-15 00:04:30,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:04:30,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:04:30,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:04:30,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:04:30,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:30" (1/1) ... [2020-10-15 00:04:30,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:30" (1/1) ... [2020-10-15 00:04:30,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:30" (1/1) ... [2020-10-15 00:04:30,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:30" (1/1) ... [2020-10-15 00:04:30,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:30" (1/1) ... [2020-10-15 00:04:30,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:30" (1/1) ... [2020-10-15 00:04:30,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:30" (1/1) ... [2020-10-15 00:04:30,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:04:30,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:04:30,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:04:30,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:04:30,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:04:30,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:04:30,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:04:30,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:04:30,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:04:30,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:04:30,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:04:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:04:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:04:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:04:30,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:04:30,408 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 00:04:30,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:30 BoogieIcfgContainer [2020-10-15 00:04:30,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:04:30,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:04:30,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:04:30,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:04:30,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:04:29" (1/3) ... [2020-10-15 00:04:30,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157c365e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:30, skipping insertion in model container [2020-10-15 00:04:30,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:30" (2/3) ... [2020-10-15 00:04:30,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157c365e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:30, skipping insertion in model container [2020-10-15 00:04:30,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:30" (3/3) ... [2020-10-15 00:04:30,420 INFO L109 eAbstractionObserver]: Analyzing ICFG nested3-1.c [2020-10-15 00:04:30,435 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:04:30,443 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:04:30,463 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:04:30,493 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:04:30,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:04:30,494 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:04:30,494 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:04:30,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:04:30,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:04:30,494 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:04:30,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:04:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-15 00:04:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 00:04:30,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:30,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:30,531 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:30,539 INFO L82 PathProgramCache]: Analyzing trace with hash -557519811, now seen corresponding path program 1 times [2020-10-15 00:04:30,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:30,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821131843] [2020-10-15 00:04:30,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:30,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:30,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:30,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:04:30,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:30,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-15 00:04:30,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:30,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:04:30,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:04:30,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:30,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:30,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:30,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:04:30,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:30,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:30,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821131843] [2020-10-15 00:04:30,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:04:30,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 00:04:30,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051015007] [2020-10-15 00:04:30,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 00:04:30,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:30,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 00:04:30,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 00:04:30,766 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-10-15 00:04:30,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:30,792 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2020-10-15 00:04:30,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 00:04:30,793 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-15 00:04:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:30,803 INFO L225 Difference]: With dead ends: 43 [2020-10-15 00:04:30,804 INFO L226 Difference]: Without dead ends: 19 [2020-10-15 00:04:30,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 00:04:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-15 00:04:30,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-15 00:04:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-15 00:04:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-10-15 00:04:30,851 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2020-10-15 00:04:30,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:30,852 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-10-15 00:04:30,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 00:04:30,852 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-10-15 00:04:30,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 00:04:30,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:30,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:30,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:04:30,854 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:30,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:30,854 INFO L82 PathProgramCache]: Analyzing trace with hash -587072483, now seen corresponding path program 1 times [2020-10-15 00:04:30,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:30,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491549050] [2020-10-15 00:04:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:30,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:30,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:30,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:04:30,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:30,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-15 00:04:30,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:30,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:30,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:30,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:30,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:04:30,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:31,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:31,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:31,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:31,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:31,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:04:31,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:31,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:31,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:31,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:31,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:31,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491549050] [2020-10-15 00:04:31,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:04:31,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 00:04:31,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325392265] [2020-10-15 00:04:31,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 00:04:31,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:31,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 00:04:31,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:04:31,046 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 3 states. [2020-10-15 00:04:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:31,069 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-10-15 00:04:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 00:04:31,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 00:04:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:31,071 INFO L225 Difference]: With dead ends: 33 [2020-10-15 00:04:31,072 INFO L226 Difference]: Without dead ends: 26 [2020-10-15 00:04:31,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:04:31,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-15 00:04:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2020-10-15 00:04:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-15 00:04:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-10-15 00:04:31,083 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2020-10-15 00:04:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:31,083 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-10-15 00:04:31,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 00:04:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-10-15 00:04:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 00:04:31,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:31,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:31,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:04:31,085 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:31,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1005021419, now seen corresponding path program 1 times [2020-10-15 00:04:31,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:31,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854667386] [2020-10-15 00:04:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:31,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:31,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:04:31,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-15 00:04:31,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:31,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:04:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:04:31,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:31,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:31,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:31,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:04:31,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:31,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:31,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:31,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854667386] [2020-10-15 00:04:31,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:04:31,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 00:04:31,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672735492] [2020-10-15 00:04:31,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 00:04:31,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:31,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 00:04:31,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:04:31,350 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2020-10-15 00:04:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:31,389 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-10-15 00:04:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 00:04:31,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 00:04:31,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:31,391 INFO L225 Difference]: With dead ends: 38 [2020-10-15 00:04:31,392 INFO L226 Difference]: Without dead ends: 24 [2020-10-15 00:04:31,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:04:31,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-15 00:04:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-15 00:04:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-15 00:04:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-10-15 00:04:31,409 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2020-10-15 00:04:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:31,409 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-10-15 00:04:31,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 00:04:31,409 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-10-15 00:04:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 00:04:31,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:31,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:31,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:04:31,411 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:31,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:31,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1066437398, now seen corresponding path program 1 times [2020-10-15 00:04:31,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:31,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240628618] [2020-10-15 00:04:31,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:31,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:31,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 00:04:31,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:31,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:04:31,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:31,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:04:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:04:31,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:31,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:31,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:31,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:31,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:04:31,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:31,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:31,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:31,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:31,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:31,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:31,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240628618] [2020-10-15 00:04:31,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:04:31,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 00:04:31,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583407373] [2020-10-15 00:04:31,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 00:04:31,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:31,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 00:04:31,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:04:31,533 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2020-10-15 00:04:31,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:31,550 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-10-15 00:04:31,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 00:04:31,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-15 00:04:31,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:31,551 INFO L225 Difference]: With dead ends: 38 [2020-10-15 00:04:31,552 INFO L226 Difference]: Without dead ends: 23 [2020-10-15 00:04:31,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:04:31,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-15 00:04:31,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-15 00:04:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-15 00:04:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-10-15 00:04:31,560 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2020-10-15 00:04:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:31,561 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-10-15 00:04:31,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 00:04:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-10-15 00:04:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 00:04:31,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:31,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:31,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:04:31,562 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:31,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1326481591, now seen corresponding path program 1 times [2020-10-15 00:04:31,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:31,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310450506] [2020-10-15 00:04:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:31,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:04:31,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:04:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-15 00:04:31,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:31,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:04:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:04:31,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:04:31,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:32,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:32,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:32,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:32,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:32,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:32,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:32,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:32,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:32,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:32,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:04:32,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310450506] [2020-10-15 00:04:32,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:04:32,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:04:32,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453645388] [2020-10-15 00:04:32,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:04:32,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:32,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:04:32,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:04:32,123 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2020-10-15 00:04:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:32,211 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-15 00:04:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:04:32,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-15 00:04:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:32,213 INFO L225 Difference]: With dead ends: 29 [2020-10-15 00:04:32,213 INFO L226 Difference]: Without dead ends: 27 [2020-10-15 00:04:32,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:04:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-15 00:04:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-15 00:04:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-15 00:04:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-15 00:04:32,223 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 13 [2020-10-15 00:04:32,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:32,224 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-15 00:04:32,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:04:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-15 00:04:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:04:32,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:32,225 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:32,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:04:32,226 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:32,226 INFO L82 PathProgramCache]: Analyzing trace with hash -599260630, now seen corresponding path program 1 times [2020-10-15 00:04:32,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:32,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513998980] [2020-10-15 00:04:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:32,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:32,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:32,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:32,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:04:32,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:04:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-15 00:04:32,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:32,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:32,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:04:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:04:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:04:32,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:32,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:32,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:32,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:32,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:32,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:04:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:04:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:33,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:33,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:33,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:33,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:33,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:04:33,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:33,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:33,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:33,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 00:04:33,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513998980] [2020-10-15 00:04:33,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:33,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:04:33,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358842831] [2020-10-15 00:04:33,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:04:33,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:33,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:04:33,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:04:33,044 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 6 states. [2020-10-15 00:04:33,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:33,145 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2020-10-15 00:04:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:04:33,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-15 00:04:33,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:33,147 INFO L225 Difference]: With dead ends: 45 [2020-10-15 00:04:33,148 INFO L226 Difference]: Without dead ends: 43 [2020-10-15 00:04:33,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:04:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-15 00:04:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-15 00:04:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-15 00:04:33,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-15 00:04:33,159 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 20 [2020-10-15 00:04:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:33,159 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-15 00:04:33,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:04:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-15 00:04:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 00:04:33,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:33,160 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:33,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:04:33,161 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:33,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:33,161 INFO L82 PathProgramCache]: Analyzing trace with hash -422883287, now seen corresponding path program 1 times [2020-10-15 00:04:33,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:33,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260197616] [2020-10-15 00:04:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:33,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:33,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:34,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:34,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:04:34,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:04:34,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-15 00:04:34,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:34,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:04:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:04:34,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:04:34,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:34,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:34,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:34,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:34,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:34,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:34,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:34,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:04:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:34,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:34,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:34,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:34,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 00:04:34,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:34,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:34,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:34,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:34,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:34,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:04:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:34,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:34,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:34,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:34,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:04:34,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:34,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:34,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:34,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:34,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:04:34,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260197616] [2020-10-15 00:04:34,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:34,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 00:04:34,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246481584] [2020-10-15 00:04:34,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:04:34,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:34,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:04:34,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:04:34,398 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 4 states. [2020-10-15 00:04:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:34,440 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2020-10-15 00:04:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 00:04:34,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-15 00:04:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:34,444 INFO L225 Difference]: With dead ends: 72 [2020-10-15 00:04:34,445 INFO L226 Difference]: Without dead ends: 65 [2020-10-15 00:04:34,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:04:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-15 00:04:34,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2020-10-15 00:04:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-15 00:04:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2020-10-15 00:04:34,459 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 27 [2020-10-15 00:04:34,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:34,460 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2020-10-15 00:04:34,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:04:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2020-10-15 00:04:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-15 00:04:34,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:34,461 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:34,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:04:34,461 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1162297013, now seen corresponding path program 2 times [2020-10-15 00:04:34,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:34,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502373417] [2020-10-15 00:04:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:34,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:35,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:35,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 00:04:35,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:04:35,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1373 [2020-10-15 00:04:35,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:35,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:35,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:04:35,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:04:35,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:04:35,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:35,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:35,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:35,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:35,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:35,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:04:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:35,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:35,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:35,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:35,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:35,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:04:35,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:35,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:35,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:35,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:04:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:35,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:35,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:35,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:04:35,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:35,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:35,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:35,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 00:04:35,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502373417] [2020-10-15 00:04:35,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:35,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:04:35,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346262128] [2020-10-15 00:04:35,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:04:35,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:35,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:04:35,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:04:35,954 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand 5 states. [2020-10-15 00:04:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:36,017 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2020-10-15 00:04:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:04:36,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-15 00:04:36,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:36,019 INFO L225 Difference]: With dead ends: 97 [2020-10-15 00:04:36,019 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 00:04:36,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:04:36,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 00:04:36,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2020-10-15 00:04:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 00:04:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-10-15 00:04:36,033 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 29 [2020-10-15 00:04:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:36,034 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-10-15 00:04:36,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:04:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-10-15 00:04:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-15 00:04:36,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:36,035 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:36,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:04:36,036 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:36,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1703669386, now seen corresponding path program 3 times [2020-10-15 00:04:36,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:36,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145487611] [2020-10-15 00:04:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:36,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:37,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:41,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:41,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 00:04:41,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:04:41,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 00:04:41,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:41,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:04:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:04:41,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:04:41,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:41,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:41,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:41,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:41,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:41,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:41,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:41,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:41,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:41,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:41,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:04:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:41,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:41,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:41,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:41,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:04:41,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:41,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:41,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:41,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:04:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:41,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:41,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:04:41,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:41,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:41,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:04:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:41,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:41,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:41,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:04:41,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:41,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 00:04:41,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145487611] [2020-10-15 00:04:41,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:41,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:04:41,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895271846] [2020-10-15 00:04:41,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:04:41,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:41,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:04:41,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:04:41,196 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand 6 states. [2020-10-15 00:04:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:41,295 INFO L93 Difference]: Finished difference Result 106 states and 139 transitions. [2020-10-15 00:04:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:04:41,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-15 00:04:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:41,300 INFO L225 Difference]: With dead ends: 106 [2020-10-15 00:04:41,300 INFO L226 Difference]: Without dead ends: 73 [2020-10-15 00:04:41,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:04:41,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-15 00:04:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-10-15 00:04:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-15 00:04:41,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2020-10-15 00:04:41,342 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 38 [2020-10-15 00:04:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:41,343 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2020-10-15 00:04:41,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:04:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2020-10-15 00:04:41,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 00:04:41,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:41,351 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:41,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:04:41,352 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:41,352 INFO L82 PathProgramCache]: Analyzing trace with hash -952680875, now seen corresponding path program 4 times [2020-10-15 00:04:41,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:41,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954980465] [2020-10-15 00:04:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:41,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:41,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:46,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 00:04:46,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:04:46,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 00:04:46,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:46,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:04:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:04:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 00:04:46,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:46,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:46,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:46,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:46,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:46,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:46,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:46,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:46,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:46,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:04:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:46,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:46,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:46,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:46,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:04:46,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:46,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:46,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:46,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:04:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:46,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:46,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:46,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:04:46,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:46,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:46,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:46,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:46,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:46,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:04:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:46,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:46,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:46,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:04:46,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:46,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:46,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:46,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:04:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:46,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:46,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:46,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:04:46,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:46,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:46,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-15 00:04:46,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954980465] [2020-10-15 00:04:46,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:46,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:04:46,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757855746] [2020-10-15 00:04:46,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:04:46,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:46,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:04:46,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:04:46,535 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand 7 states. [2020-10-15 00:04:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:46,639 INFO L93 Difference]: Finished difference Result 121 states and 160 transitions. [2020-10-15 00:04:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:04:46,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-15 00:04:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:46,644 INFO L225 Difference]: With dead ends: 121 [2020-10-15 00:04:46,644 INFO L226 Difference]: Without dead ends: 83 [2020-10-15 00:04:46,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:04:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-15 00:04:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2020-10-15 00:04:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-15 00:04:46,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2020-10-15 00:04:46,679 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2020-10-15 00:04:46,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:46,680 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2020-10-15 00:04:46,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:04:46,680 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2020-10-15 00:04:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 00:04:46,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:46,686 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:46,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:04:46,686 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:46,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1980859114, now seen corresponding path program 5 times [2020-10-15 00:04:46,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:46,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436589693] [2020-10-15 00:04:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:46,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:51,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 00:04:51,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:04:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 00:04:51,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:51,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:04:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:04:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 00:04:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:51,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:51,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:51,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:51,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:51,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:51,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:51,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 00:04:51,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:04:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:51,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:51,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:51,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:51,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:04:51,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:51,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:51,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:04:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:51,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:04:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:51,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:51,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:51,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:04:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:51,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:51,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:04:51,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:51,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:51,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:04:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:51,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:51,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:04:51,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:51,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:51,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:51,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:51,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:51,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-15 00:04:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:51,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:51,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:51,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:51,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:04:51,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:51,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:04:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:04:51,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-15 00:04:51,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436589693] [2020-10-15 00:04:51,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:51,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:04:51,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803247374] [2020-10-15 00:04:51,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:04:51,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:51,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:04:51,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:04:51,919 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand 8 states. [2020-10-15 00:04:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:52,051 INFO L93 Difference]: Finished difference Result 136 states and 181 transitions. [2020-10-15 00:04:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:04:52,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-15 00:04:52,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:52,055 INFO L225 Difference]: With dead ends: 136 [2020-10-15 00:04:52,055 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 00:04:52,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:04:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 00:04:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2020-10-15 00:04:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 00:04:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 112 transitions. [2020-10-15 00:04:52,084 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 112 transitions. Word has length 56 [2020-10-15 00:04:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:52,085 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 112 transitions. [2020-10-15 00:04:52,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:04:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 112 transitions. [2020-10-15 00:04:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 00:04:52,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:52,087 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:52,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:04:52,087 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:52,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1925016075, now seen corresponding path program 6 times [2020-10-15 00:04:52,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:52,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450403296] [2020-10-15 00:04:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:52,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:52,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:52,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:52,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:57,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 00:04:57,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:04:57,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 00:04:57,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:57,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:04:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:04:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:04:57,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:57,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:04:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:57,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:57,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:04:57,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:57,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:57,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:57,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:04:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:57,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 00:04:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:57,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:57,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:57,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:57,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:57,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:04:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:57,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:04:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:57,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:57,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:57,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:57,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:04:57,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:57,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:57,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:57,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:04:57,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:57,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:57,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:04:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:57,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:57,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:57,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:04:57,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:57,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:04:57,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:04:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:57,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:57,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:57,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:57,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:57,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:57,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:57,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:04:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:57,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:57,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-15 00:04:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:57,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:57,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:57,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:57,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:04:57,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:57,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:04:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:57,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 00:04:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:04:57,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:04:57,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:04:57,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:04:57,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:04:57,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:04:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:04:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:04:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:04:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:04:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-15 00:04:57,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450403296] [2020-10-15 00:04:57,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:04:57,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-15 00:04:57,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284216846] [2020-10-15 00:04:57,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:04:57,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:04:57,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:04:57,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:04:57,203 INFO L87 Difference]: Start difference. First operand 85 states and 112 transitions. Second operand 4 states. [2020-10-15 00:04:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:04:57,237 INFO L93 Difference]: Finished difference Result 173 states and 238 transitions. [2020-10-15 00:04:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 00:04:57,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-15 00:04:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:04:57,239 INFO L225 Difference]: With dead ends: 173 [2020-10-15 00:04:57,239 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 00:04:57,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:04:57,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 00:04:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-15 00:04:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 00:04:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 124 transitions. [2020-10-15 00:04:57,265 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 124 transitions. Word has length 65 [2020-10-15 00:04:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:04:57,266 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 124 transitions. [2020-10-15 00:04:57,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:04:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 124 transitions. [2020-10-15 00:04:57,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 00:04:57,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:04:57,268 INFO L422 BasicCegarLoop]: trace histogram [12, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:04:57,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:04:57,269 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:04:57,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:04:57,269 INFO L82 PathProgramCache]: Analyzing trace with hash 754154721, now seen corresponding path program 7 times [2020-10-15 00:04:57,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:04:57,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417419404] [2020-10-15 00:04:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:04:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:04:57,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:04:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:00,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:02,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 00:05:02,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:05:02,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 00:05:02,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:02,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:02,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:05:02,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:05:02,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 00:05:02,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:02,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:02,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:02,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:02,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:02,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:02,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:02,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:02,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:02,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:05:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:02,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:02,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:02,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:02,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:02,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:02,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:02,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:02,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:02,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:02,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:02,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:05:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:02,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:02,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:02,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:02,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:02,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:02,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:05:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:02,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:02,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:02,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:02,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:02,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:05:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:02,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:02,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:02,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:02,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:02,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:02,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 00:05:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:02,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:02,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:02,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:02,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:02,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-15 00:05:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:02,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:02,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:02,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:02,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:02,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-15 00:05:02,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417419404] [2020-10-15 00:05:02,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:02,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:05:02,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814132127] [2020-10-15 00:05:02,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:05:02,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:02,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:05:02,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:05:02,389 INFO L87 Difference]: Start difference. First operand 97 states and 124 transitions. Second operand 5 states. [2020-10-15 00:05:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:02,423 INFO L93 Difference]: Finished difference Result 196 states and 261 transitions. [2020-10-15 00:05:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:05:02,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-15 00:05:02,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:02,424 INFO L225 Difference]: With dead ends: 196 [2020-10-15 00:05:02,424 INFO L226 Difference]: Without dead ends: 109 [2020-10-15 00:05:02,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:05:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-15 00:05:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-15 00:05:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-15 00:05:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2020-10-15 00:05:02,446 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 136 transitions. Word has length 71 [2020-10-15 00:05:02,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:02,447 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 136 transitions. [2020-10-15 00:05:02,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:05:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 136 transitions. [2020-10-15 00:05:02,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 00:05:02,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:02,448 INFO L422 BasicCegarLoop]: trace histogram [18, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:02,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:05:02,449 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:02,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:02,449 INFO L82 PathProgramCache]: Analyzing trace with hash 139732405, now seen corresponding path program 8 times [2020-10-15 00:05:02,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:02,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267131729] [2020-10-15 00:05:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:02,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:02,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:07,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 00:05:07,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:05:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 00:05:07,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:07,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:07,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:05:07,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-15 00:05:07,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:05:07,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:07,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:07,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:07,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:07,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:07,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:07,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 00:05:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:07,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:07,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:07,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:07,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:07,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:07,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:05:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:07,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:07,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:07,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:07,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:07,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:07,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:07,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-15 00:05:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:07,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:07,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:07,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:07,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:07,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:07,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:07,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 00:05:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:07,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:07,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:07,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:07,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:07,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-15 00:05:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:07,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:07,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:07,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:07,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:07,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:07,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:07,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:07,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-15 00:05:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:07,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:07,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:07,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:07,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:07,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:07,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:07,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 176 proven. 6 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-10-15 00:05:07,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267131729] [2020-10-15 00:05:07,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:07,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:05:07,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207422859] [2020-10-15 00:05:07,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:05:07,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:07,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:05:07,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:05:07,572 INFO L87 Difference]: Start difference. First operand 109 states and 136 transitions. Second operand 6 states. [2020-10-15 00:05:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:07,613 INFO L93 Difference]: Finished difference Result 219 states and 284 transitions. [2020-10-15 00:05:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:05:07,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-15 00:05:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:07,614 INFO L225 Difference]: With dead ends: 219 [2020-10-15 00:05:07,614 INFO L226 Difference]: Without dead ends: 121 [2020-10-15 00:05:07,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:05:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-15 00:05:07,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-10-15 00:05:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-15 00:05:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 148 transitions. [2020-10-15 00:05:07,635 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 148 transitions. Word has length 77 [2020-10-15 00:05:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:07,635 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 148 transitions. [2020-10-15 00:05:07,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:05:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 148 transitions. [2020-10-15 00:05:07,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 00:05:07,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:07,636 INFO L422 BasicCegarLoop]: trace histogram [24, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:07,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:05:07,637 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:07,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:07,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1324479393, now seen corresponding path program 9 times [2020-10-15 00:05:07,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:07,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969915314] [2020-10-15 00:05:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:07,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:08,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:12,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 00:05:12,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 00:05:12,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 00:05:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:12,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:05:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 00:05:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:05:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:35,517 WARN L193 SmtUtils]: Spent 22.74 s on a formula simplification. DAG size of input: 141 DAG size of output: 14 [2020-10-15 00:05:35,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:35,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:35,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:35,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:35,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:35,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:35,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:35,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:35,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:05:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:35,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:35,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:35,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:35,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:35,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:05:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:35,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:35,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:35,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:35,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:35,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:05:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:35,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:35,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:35,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:05:35,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:35,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:05:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:05:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:05:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:35,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:05:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:35,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:35,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:35,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:35,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:35,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:35,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:35,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:35,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:35,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:35,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-15 00:05:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:35,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:35,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:35,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:35,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:35,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:35,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-15 00:05:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:35,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:35,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:35,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:35,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:35,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 324 proven. 19 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-15 00:05:35,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969915314] [2020-10-15 00:05:35,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:35,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:05:35,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558263453] [2020-10-15 00:05:35,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:05:35,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:35,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:05:35,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:05:35,612 INFO L87 Difference]: Start difference. First operand 121 states and 148 transitions. Second operand 9 states. [2020-10-15 00:05:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:35,728 INFO L93 Difference]: Finished difference Result 253 states and 329 transitions. [2020-10-15 00:05:35,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:05:35,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-10-15 00:05:35,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:35,730 INFO L225 Difference]: With dead ends: 253 [2020-10-15 00:05:35,730 INFO L226 Difference]: Without dead ends: 133 [2020-10-15 00:05:35,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:05:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-15 00:05:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-10-15 00:05:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-15 00:05:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2020-10-15 00:05:35,753 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 83 [2020-10-15 00:05:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:35,754 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2020-10-15 00:05:35,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:05:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2020-10-15 00:05:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 00:05:35,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:35,755 INFO L422 BasicCegarLoop]: trace histogram [30, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:35,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:05:35,755 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:35,755 INFO L82 PathProgramCache]: Analyzing trace with hash 612660597, now seen corresponding path program 10 times [2020-10-15 00:05:35,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:35,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138889225] [2020-10-15 00:05:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:35,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:40,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:40,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 00:05:40,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:05:40,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 00:05:40,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:40,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:40,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:05:40,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 00:05:40,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:05:40,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:40,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:40,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:40,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:40,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:40,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:40,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:40,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:40,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:40,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:40,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:05:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:40,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:40,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:40,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:40,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:40,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:40,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:40,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:40,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:05:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:40,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:40,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:40,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:40,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:40,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:40,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:40,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:40,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:40,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-15 00:05:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:40,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:40,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:40,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:40,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:40,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:40,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:40,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-15 00:05:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:40,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:40,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:40,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:40,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:40,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-15 00:05:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:40,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:40,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:40,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:40,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:40,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:40,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-15 00:05:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:40,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:40,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:40,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:40,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:40,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:40,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 436 proven. 15 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2020-10-15 00:05:40,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138889225] [2020-10-15 00:05:40,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:40,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:05:40,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388585879] [2020-10-15 00:05:40,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:05:40,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:40,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:05:40,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:05:40,896 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand 8 states. [2020-10-15 00:05:40,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:40,961 INFO L93 Difference]: Finished difference Result 265 states and 330 transitions. [2020-10-15 00:05:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:05:40,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-15 00:05:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:40,962 INFO L225 Difference]: With dead ends: 265 [2020-10-15 00:05:40,963 INFO L226 Difference]: Without dead ends: 145 [2020-10-15 00:05:40,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:05:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-15 00:05:40,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-10-15 00:05:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-15 00:05:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-10-15 00:05:40,987 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 89 [2020-10-15 00:05:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:40,987 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-10-15 00:05:40,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:05:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-10-15 00:05:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 00:05:40,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:40,988 INFO L422 BasicCegarLoop]: trace histogram [36, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:40,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:05:40,988 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:40,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:40,989 INFO L82 PathProgramCache]: Analyzing trace with hash 916187745, now seen corresponding path program 11 times [2020-10-15 00:05:40,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:40,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302484091] [2020-10-15 00:05:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:41,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:41,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:41,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:41,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 00:05:46,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:05:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 00:05:46,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:05:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-15 00:05:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:05:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:46,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:46,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:46,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:46,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:46,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 00:05:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:46,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:46,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:46,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:05:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:46,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:46,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:46,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:46,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:46,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 00:05:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:46,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:46,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:46,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:46,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:46,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:46,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:46,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 00:05:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:46,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:46,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:46,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:46,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:46,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-15 00:05:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:46,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:46,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:46,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:46,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:46,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-15 00:05:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:46,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:46,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:46,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:46,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:46,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 581 proven. 21 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2020-10-15 00:05:46,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302484091] [2020-10-15 00:05:46,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:46,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:05:46,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029110682] [2020-10-15 00:05:46,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:05:46,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:46,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:05:46,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:05:46,209 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 9 states. [2020-10-15 00:05:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:46,329 INFO L93 Difference]: Finished difference Result 288 states and 353 transitions. [2020-10-15 00:05:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:05:46,329 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-15 00:05:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:46,334 INFO L225 Difference]: With dead ends: 288 [2020-10-15 00:05:46,335 INFO L226 Difference]: Without dead ends: 157 [2020-10-15 00:05:46,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:05:46,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-15 00:05:46,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-15 00:05:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-15 00:05:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2020-10-15 00:05:46,380 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 95 [2020-10-15 00:05:46,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:46,381 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2020-10-15 00:05:46,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:05:46,381 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2020-10-15 00:05:46,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 00:05:46,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:46,383 INFO L422 BasicCegarLoop]: trace histogram [42, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:46,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:05:46,383 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:46,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:46,384 INFO L82 PathProgramCache]: Analyzing trace with hash 904627509, now seen corresponding path program 12 times [2020-10-15 00:05:46,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:46,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886630366] [2020-10-15 00:05:46,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:46,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:51,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 00:05:51,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:05:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 00:05:51,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:51,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:05:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 00:05:51,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:05:51,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:51,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:51,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:51,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:51,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:51,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:51,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:51,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:05:51,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-15 00:05:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:51,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:51,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:51,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:51,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:51,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:51,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:05:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:51,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:51,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:51,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:51,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:51,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:51,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:51,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:51,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-15 00:05:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:51,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:51,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:51,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:51,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:51,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:51,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:51,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-15 00:05:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:51,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:51,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:51,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:51,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:51,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:51,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:51,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-15 00:05:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:51,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:51,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:51,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:51,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:51,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:51,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:51,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:51,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:51,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:51,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-15 00:05:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:51,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:51,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:51,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:05:51,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:51,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 744 proven. 28 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2020-10-15 00:05:51,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886630366] [2020-10-15 00:05:51,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:51,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:05:51,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435431307] [2020-10-15 00:05:51,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:05:51,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:51,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:05:51,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:05:51,676 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand 10 states. [2020-10-15 00:05:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:51,811 INFO L93 Difference]: Finished difference Result 311 states and 376 transitions. [2020-10-15 00:05:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:05:51,812 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-10-15 00:05:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:51,814 INFO L225 Difference]: With dead ends: 311 [2020-10-15 00:05:51,814 INFO L226 Difference]: Without dead ends: 169 [2020-10-15 00:05:51,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:05:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-15 00:05:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2020-10-15 00:05:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-15 00:05:51,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 196 transitions. [2020-10-15 00:05:51,867 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 196 transitions. Word has length 101 [2020-10-15 00:05:51,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:51,868 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 196 transitions. [2020-10-15 00:05:51,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:05:51,868 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 196 transitions. [2020-10-15 00:05:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 00:05:51,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:51,875 INFO L422 BasicCegarLoop]: trace histogram [48, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:51,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:05:51,875 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:51,876 INFO L82 PathProgramCache]: Analyzing trace with hash -495361759, now seen corresponding path program 13 times [2020-10-15 00:05:51,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:51,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208324868] [2020-10-15 00:05:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:51,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:52,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:53,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:56,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:56,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 00:05:56,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 00:05:56,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 00:05:56,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:56,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:56,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:05:56,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-15 00:05:56,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:05:56,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:57,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:05:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:57,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:05:57,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:57,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:05:57,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:57,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:57,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 00:05:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:57,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:57,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:57,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:57,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:57,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:57,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:57,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:57,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:57,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:05:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:57,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:57,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:57,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:57,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:57,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:05:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:57,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:57,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:57,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:57,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:57,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:05:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:57,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-15 00:05:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:57,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:57,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:57,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:05:57,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:57,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:05:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:05:57,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:05:57,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:05:57,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-15 00:05:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:57,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:57,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:05:57,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:57,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:57,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:57,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-15 00:05:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:05:57,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:05:57,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:05:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:05:57,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:05:57,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:05:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:05:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:05:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:05:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:05:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 944 proven. 42 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2020-10-15 00:05:57,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208324868] [2020-10-15 00:05:57,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:05:57,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:05:57,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654520111] [2020-10-15 00:05:57,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:05:57,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:05:57,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:05:57,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:05:57,267 INFO L87 Difference]: Start difference. First operand 169 states and 196 transitions. Second operand 13 states. [2020-10-15 00:05:57,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:05:57,497 INFO L93 Difference]: Finished difference Result 334 states and 399 transitions. [2020-10-15 00:05:57,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:05:57,497 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 107 [2020-10-15 00:05:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:05:57,499 INFO L225 Difference]: With dead ends: 334 [2020-10-15 00:05:57,499 INFO L226 Difference]: Without dead ends: 181 [2020-10-15 00:05:57,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:05:57,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-15 00:05:57,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-10-15 00:05:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-15 00:05:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 208 transitions. [2020-10-15 00:05:57,534 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 208 transitions. Word has length 107 [2020-10-15 00:05:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:05:57,534 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 208 transitions. [2020-10-15 00:05:57,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:05:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 208 transitions. [2020-10-15 00:05:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 00:05:57,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:05:57,536 INFO L422 BasicCegarLoop]: trace histogram [54, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:05:57,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:05:57,537 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:05:57,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:05:57,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1386304757, now seen corresponding path program 14 times [2020-10-15 00:05:57,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:05:57,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407654594] [2020-10-15 00:05:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:05:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:05:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:05:58,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:02,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:02,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-15 00:06:02,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:06:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 00:06:02,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:02,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:06:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 00:06:02,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:06:02,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:02,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:02,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:02,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:02,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:02,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-15 00:06:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:02,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:02,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:02,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:02,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:02,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:02,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:06:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:02,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:02,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:02,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:02,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:02,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:02,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:02,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-15 00:06:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:02,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:02,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:02,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:02,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:02,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:02,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:02,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-15 00:06:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:02,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:02,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:02,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:02,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:02,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:02,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-15 00:06:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:02,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:02,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:02,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:02,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:02,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:02,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-15 00:06:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:02,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:02,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:02,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:02,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:02,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1893 backedges. 1140 proven. 45 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2020-10-15 00:06:02,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407654594] [2020-10-15 00:06:02,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:02,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:06:02,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734572888] [2020-10-15 00:06:02,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:06:02,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:02,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:06:02,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:06:02,777 INFO L87 Difference]: Start difference. First operand 181 states and 208 transitions. Second operand 12 states. [2020-10-15 00:06:02,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:02,893 INFO L93 Difference]: Finished difference Result 357 states and 422 transitions. [2020-10-15 00:06:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:06:02,894 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-10-15 00:06:02,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:02,895 INFO L225 Difference]: With dead ends: 357 [2020-10-15 00:06:02,895 INFO L226 Difference]: Without dead ends: 193 [2020-10-15 00:06:02,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:06:02,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-15 00:06:02,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2020-10-15 00:06:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-15 00:06:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 220 transitions. [2020-10-15 00:06:02,929 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 220 transitions. Word has length 113 [2020-10-15 00:06:02,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:02,930 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 220 transitions. [2020-10-15 00:06:02,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:06:02,930 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 220 transitions. [2020-10-15 00:06:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 00:06:02,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:02,931 INFO L422 BasicCegarLoop]: trace histogram [60, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:02,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:06:02,932 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:02,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:02,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1595037665, now seen corresponding path program 15 times [2020-10-15 00:06:02,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:02,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707964056] [2020-10-15 00:06:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:02,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:07,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:07,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-15 00:06:07,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:06:07,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 00:06:07,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:07,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:06:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 00:06:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:06:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:08,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:08,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:08,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:08,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:08,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:08,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:08,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:06:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:08,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:08,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:08,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:08,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:06:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:08,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:08,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:08,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:08,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:08,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:08,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:08,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:08,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 00:06:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:08,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:08,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:08,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:08,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:08,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-15 00:06:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:08,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:08,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:08,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:08,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:08,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:08,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-15 00:06:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:08,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:08,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:08,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:08,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:08,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:08,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:08,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:08,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:08,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-15 00:06:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:08,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:08,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:08,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:08,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:08,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:08,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:08,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 1373 proven. 55 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-15 00:06:08,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707964056] [2020-10-15 00:06:08,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:08,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:06:08,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803631339] [2020-10-15 00:06:08,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:06:08,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:08,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:06:08,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:06:08,187 INFO L87 Difference]: Start difference. First operand 193 states and 220 transitions. Second operand 13 states. [2020-10-15 00:06:08,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:08,333 INFO L93 Difference]: Finished difference Result 380 states and 445 transitions. [2020-10-15 00:06:08,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:06:08,333 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 119 [2020-10-15 00:06:08,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:08,335 INFO L225 Difference]: With dead ends: 380 [2020-10-15 00:06:08,335 INFO L226 Difference]: Without dead ends: 205 [2020-10-15 00:06:08,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:06:08,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-15 00:06:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2020-10-15 00:06:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-15 00:06:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 232 transitions. [2020-10-15 00:06:08,402 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 232 transitions. Word has length 119 [2020-10-15 00:06:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:08,402 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 232 transitions. [2020-10-15 00:06:08,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:06:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 232 transitions. [2020-10-15 00:06:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-15 00:06:08,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:08,404 INFO L422 BasicCegarLoop]: trace histogram [66, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:08,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:06:08,404 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:08,405 INFO L82 PathProgramCache]: Analyzing trace with hash -759307083, now seen corresponding path program 16 times [2020-10-15 00:06:08,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:08,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668932276] [2020-10-15 00:06:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:08,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-15 00:06:13,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:06:13,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 00:06:13,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:13,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:06:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 00:06:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:06:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:13,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:13,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:13,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:13,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:13,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:13,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:13,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 00:06:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:13,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:13,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:13,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:13,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 00:06:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:13,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:13,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:06:13,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:13,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:13,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:13,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:13,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-15 00:06:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:13,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:13,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:13,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:13,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:13,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:13,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:13,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:13,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:13,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-15 00:06:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:13,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:13,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:13,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:13,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:13,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:13,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:13,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-15 00:06:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:13,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:13,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:13,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:13,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:13,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:13,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:13,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-15 00:06:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:13,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:13,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:13,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:13,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:13,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:13,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:13,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:13,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2679 backedges. 1626 proven. 66 refuted. 0 times theorem prover too weak. 987 trivial. 0 not checked. [2020-10-15 00:06:13,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668932276] [2020-10-15 00:06:13,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:13,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:06:13,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463846740] [2020-10-15 00:06:13,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:06:13,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:13,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:06:13,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:06:13,672 INFO L87 Difference]: Start difference. First operand 205 states and 232 transitions. Second operand 14 states. [2020-10-15 00:06:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:13,839 INFO L93 Difference]: Finished difference Result 403 states and 468 transitions. [2020-10-15 00:06:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:06:13,839 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 125 [2020-10-15 00:06:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:13,841 INFO L225 Difference]: With dead ends: 403 [2020-10-15 00:06:13,841 INFO L226 Difference]: Without dead ends: 217 [2020-10-15 00:06:13,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:06:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-15 00:06:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-15 00:06:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-15 00:06:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 244 transitions. [2020-10-15 00:06:13,878 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 244 transitions. Word has length 125 [2020-10-15 00:06:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:13,879 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 244 transitions. [2020-10-15 00:06:13,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:06:13,879 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 244 transitions. [2020-10-15 00:06:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 00:06:13,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:13,880 INFO L422 BasicCegarLoop]: trace histogram [72, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:13,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:06:13,881 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:13,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:13,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1190055585, now seen corresponding path program 17 times [2020-10-15 00:06:13,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:13,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411908071] [2020-10-15 00:06:13,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:13,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:14,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:18,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:18,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-15 00:06:18,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:06:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 00:06:18,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:18,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:06:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-15 00:06:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:06:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:19,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:19,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:19,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:19,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:19,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 00:06:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:19,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:19,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:19,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:19,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:06:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:19,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:19,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:19,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:19,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-15 00:06:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:19,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:19,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:19,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-15 00:06:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:19,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:06:19,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:06:19,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:06:19,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:19,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-15 00:06:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:19,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:19,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-15 00:06:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:19,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:19,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:19,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:19,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:19,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:19,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3126 backedges. 1912 proven. 84 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2020-10-15 00:06:19,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411908071] [2020-10-15 00:06:19,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:19,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:06:19,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625953033] [2020-10-15 00:06:19,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:06:19,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:19,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:06:19,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:06:19,274 INFO L87 Difference]: Start difference. First operand 217 states and 244 transitions. Second operand 17 states. [2020-10-15 00:06:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:19,575 INFO L93 Difference]: Finished difference Result 426 states and 491 transitions. [2020-10-15 00:06:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:06:19,575 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 131 [2020-10-15 00:06:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:19,577 INFO L225 Difference]: With dead ends: 426 [2020-10-15 00:06:19,577 INFO L226 Difference]: Without dead ends: 229 [2020-10-15 00:06:19,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:06:19,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-15 00:06:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-10-15 00:06:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-15 00:06:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 256 transitions. [2020-10-15 00:06:19,611 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 256 transitions. Word has length 131 [2020-10-15 00:06:19,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:19,612 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 256 transitions. [2020-10-15 00:06:19,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:06:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 256 transitions. [2020-10-15 00:06:19,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-15 00:06:19,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:19,613 INFO L422 BasicCegarLoop]: trace histogram [78, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:19,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:06:19,614 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:19,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:19,614 INFO L82 PathProgramCache]: Analyzing trace with hash -799460235, now seen corresponding path program 18 times [2020-10-15 00:06:19,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:19,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385727337] [2020-10-15 00:06:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:19,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-15 00:06:24,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:06:24,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 00:06:24,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:06:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-15 00:06:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:06:24,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:24,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:24,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:24,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:24,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:24,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-15 00:06:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:24,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:24,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:24,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:24,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 00:06:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:24,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:24,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:24,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:24,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-15 00:06:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:24,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:24,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:24,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-15 00:06:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:24,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:24,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:24,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:24,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:24,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:24,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-15 00:06:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:24,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:24,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:24,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:24,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:24,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-15 00:06:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:24,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:24,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:24,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:24,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:24,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:24,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:24,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3609 backedges. 2196 proven. 91 refuted. 0 times theorem prover too weak. 1322 trivial. 0 not checked. [2020-10-15 00:06:24,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385727337] [2020-10-15 00:06:24,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:24,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:06:24,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725211638] [2020-10-15 00:06:24,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:06:24,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:24,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:06:24,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:06:24,917 INFO L87 Difference]: Start difference. First operand 229 states and 256 transitions. Second operand 16 states. [2020-10-15 00:06:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:25,120 INFO L93 Difference]: Finished difference Result 449 states and 514 transitions. [2020-10-15 00:06:25,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:06:25,121 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 137 [2020-10-15 00:06:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:25,122 INFO L225 Difference]: With dead ends: 449 [2020-10-15 00:06:25,122 INFO L226 Difference]: Without dead ends: 241 [2020-10-15 00:06:25,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:06:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-15 00:06:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-10-15 00:06:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-15 00:06:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 268 transitions. [2020-10-15 00:06:25,156 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 268 transitions. Word has length 137 [2020-10-15 00:06:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:25,157 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 268 transitions. [2020-10-15 00:06:25,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:06:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 268 transitions. [2020-10-15 00:06:25,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-15 00:06:25,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:25,158 INFO L422 BasicCegarLoop]: trace histogram [84, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:25,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:06:25,159 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:25,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1117177185, now seen corresponding path program 19 times [2020-10-15 00:06:25,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:25,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799395017] [2020-10-15 00:06:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:25,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:25,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-15 00:06:30,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:06:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 00:06:30,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:06:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 00:06:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:06:30,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:30,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:30,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 00:06:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:30,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:30,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:06:30,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:30,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 00:06:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:30,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:30,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:30,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:30,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-15 00:06:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:30,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:30,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:30,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-15 00:06:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:30,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:30,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:30,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-15 00:06:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:30,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:30,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:30,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:30,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:30,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-15 00:06:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:30,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:30,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:30,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:30,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 2057 proven. 105 refuted. 0 times theorem prover too weak. 1966 trivial. 0 not checked. [2020-10-15 00:06:30,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799395017] [2020-10-15 00:06:30,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:30,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:06:30,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612145220] [2020-10-15 00:06:30,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:06:30,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:30,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:06:30,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:06:30,480 INFO L87 Difference]: Start difference. First operand 241 states and 268 transitions. Second operand 17 states. [2020-10-15 00:06:30,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:30,697 INFO L93 Difference]: Finished difference Result 472 states and 537 transitions. [2020-10-15 00:06:30,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:06:30,697 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 143 [2020-10-15 00:06:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:30,699 INFO L225 Difference]: With dead ends: 472 [2020-10-15 00:06:30,699 INFO L226 Difference]: Without dead ends: 253 [2020-10-15 00:06:30,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:06:30,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-15 00:06:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2020-10-15 00:06:30,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-15 00:06:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 280 transitions. [2020-10-15 00:06:30,726 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 280 transitions. Word has length 143 [2020-10-15 00:06:30,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:30,726 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 280 transitions. [2020-10-15 00:06:30,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:06:30,727 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 280 transitions. [2020-10-15 00:06:30,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-15 00:06:30,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:30,728 INFO L422 BasicCegarLoop]: trace histogram [90, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:30,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:06:30,729 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:30,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:30,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1484045259, now seen corresponding path program 20 times [2020-10-15 00:06:30,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:30,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176647725] [2020-10-15 00:06:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:30,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:35,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:35,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-15 00:06:35,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:06:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 00:06:35,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:35,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:06:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-15 00:06:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:06:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:36,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:36,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:36,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:06:36,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 00:06:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:36,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:36,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:36,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:36,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 00:06:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:36,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:36,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:36,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-15 00:06:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:36,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:36,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:36,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:36,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-15 00:06:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:36,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:06:36,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:36,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:36,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-15 00:06:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:36,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:36,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:36,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:36,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:36,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-15 00:06:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:36,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:36,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:36,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:36,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:36,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:36,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:36,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:36,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:36,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4683 backedges. 2336 proven. 120 refuted. 0 times theorem prover too weak. 2227 trivial. 0 not checked. [2020-10-15 00:06:36,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176647725] [2020-10-15 00:06:36,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:36,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:06:36,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767857136] [2020-10-15 00:06:36,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:06:36,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:36,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:06:36,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:06:36,238 INFO L87 Difference]: Start difference. First operand 253 states and 280 transitions. Second operand 18 states. [2020-10-15 00:06:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:36,560 INFO L93 Difference]: Finished difference Result 495 states and 560 transitions. [2020-10-15 00:06:36,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:06:36,561 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 149 [2020-10-15 00:06:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:36,563 INFO L225 Difference]: With dead ends: 495 [2020-10-15 00:06:36,563 INFO L226 Difference]: Without dead ends: 265 [2020-10-15 00:06:36,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:06:36,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-15 00:06:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2020-10-15 00:06:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-15 00:06:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 292 transitions. [2020-10-15 00:06:36,617 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 292 transitions. Word has length 149 [2020-10-15 00:06:36,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:36,617 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 292 transitions. [2020-10-15 00:06:36,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:06:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 292 transitions. [2020-10-15 00:06:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-15 00:06:36,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:36,619 INFO L422 BasicCegarLoop]: trace histogram [96, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:36,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:06:36,619 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:36,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2003682271, now seen corresponding path program 21 times [2020-10-15 00:06:36,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:36,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130939450] [2020-10-15 00:06:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:37,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:37,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:41,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:41,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-15 00:06:41,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:06:41,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 00:06:41,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:41,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:06:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-15 00:06:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:06:41,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:46,190 WARN L193 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 142 DAG size of output: 12 [2020-10-15 00:06:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:46,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:46,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:46,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:46,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:46,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 00:06:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:46,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:46,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:46,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:46,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:46,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:46,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:46,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:46,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:46,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:46,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 00:06:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:46,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:46,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:46,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:46,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:46,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:46,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-15 00:06:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:46,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:46,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:06:46,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:46,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:06:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 00:06:46,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:06:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:46,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-15 00:06:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:46,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:46,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:46,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:46,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:46,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:46,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-15 00:06:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:46,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:46,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:46,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:46,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-15 00:06:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:46,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:46,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:46,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:46,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:46,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:46,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:46,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:46,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:46,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:46,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 3228 proven. 145 refuted. 0 times theorem prover too weak. 1901 trivial. 0 not checked. [2020-10-15 00:06:46,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130939450] [2020-10-15 00:06:46,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:46,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 00:06:46,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760319224] [2020-10-15 00:06:46,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 00:06:46,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:46,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 00:06:46,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:06:46,297 INFO L87 Difference]: Start difference. First operand 265 states and 292 transitions. Second operand 21 states. [2020-10-15 00:06:46,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:46,648 INFO L93 Difference]: Finished difference Result 529 states and 605 transitions. [2020-10-15 00:06:46,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:06:46,649 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 155 [2020-10-15 00:06:46,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:46,651 INFO L225 Difference]: With dead ends: 529 [2020-10-15 00:06:46,651 INFO L226 Difference]: Without dead ends: 277 [2020-10-15 00:06:46,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:06:46,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-15 00:06:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2020-10-15 00:06:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-15 00:06:46,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 304 transitions. [2020-10-15 00:06:46,689 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 304 transitions. Word has length 155 [2020-10-15 00:06:46,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:46,689 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 304 transitions. [2020-10-15 00:06:46,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 00:06:46,689 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 304 transitions. [2020-10-15 00:06:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-15 00:06:46,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:46,691 INFO L422 BasicCegarLoop]: trace histogram [102, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:46,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:06:46,692 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:46,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:46,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1986794485, now seen corresponding path program 22 times [2020-10-15 00:06:46,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:46,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589820603] [2020-10-15 00:06:46,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:51,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:51,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-15 00:06:51,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:06:51,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 00:06:51,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:51,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:06:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:06:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:06:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:52,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:52,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:52,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:52,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:52,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:52,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:52,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:52,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-15 00:06:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:52,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:52,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:52,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:52,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:06:52,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:52,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:52,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:52,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 00:06:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:52,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:52,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:52,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:52,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:52,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:52,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:52,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:52,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-15 00:06:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:52,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:52,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:52,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:52,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:52,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:52,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:52,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:52,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:52,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:52,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-15 00:06:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:52,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:52,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:52,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:52,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:52,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:52,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:52,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:52,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-15 00:06:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:52,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:52,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:52,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:52,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:52,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:52,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:52,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-15 00:06:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:52,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:52,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:52,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:52,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5901 backedges. 1638 proven. 153 refuted. 0 times theorem prover too weak. 4110 trivial. 0 not checked. [2020-10-15 00:06:52,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589820603] [2020-10-15 00:06:52,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:52,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:06:52,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412009093] [2020-10-15 00:06:52,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:06:52,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:52,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:06:52,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:06:52,111 INFO L87 Difference]: Start difference. First operand 277 states and 304 transitions. Second operand 20 states. [2020-10-15 00:06:52,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:52,397 INFO L93 Difference]: Finished difference Result 541 states and 606 transitions. [2020-10-15 00:06:52,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 00:06:52,397 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 161 [2020-10-15 00:06:52,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:52,399 INFO L225 Difference]: With dead ends: 541 [2020-10-15 00:06:52,399 INFO L226 Difference]: Without dead ends: 289 [2020-10-15 00:06:52,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:06:52,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-15 00:06:52,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-10-15 00:06:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-15 00:06:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 316 transitions. [2020-10-15 00:06:52,460 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 316 transitions. Word has length 161 [2020-10-15 00:06:52,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:52,460 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 316 transitions. [2020-10-15 00:06:52,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:06:52,460 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 316 transitions. [2020-10-15 00:06:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 00:06:52,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:52,463 INFO L422 BasicCegarLoop]: trace histogram [108, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:52,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:06:52,463 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:52,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1567175393, now seen corresponding path program 23 times [2020-10-15 00:06:52,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:52,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212480050] [2020-10-15 00:06:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-15 00:06:57,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:06:57,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-15 00:06:57,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:06:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 00:06:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:06:57,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:06:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:06:57,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:06:57,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:06:57,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:06:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:57,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:57,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:06:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-15 00:06:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:57,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:57,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-15 00:06:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:57,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:57,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-15 00:06:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:57,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:57,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:57,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-15 00:06:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:57,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-15 00:06:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:57,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:57,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:06:57,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:06:57,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:06:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:06:57,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:06:57,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:06:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:06:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:06:57,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:06:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:06:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6564 backedges. 3281 proven. 171 refuted. 0 times theorem prover too weak. 3112 trivial. 0 not checked. [2020-10-15 00:06:57,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212480050] [2020-10-15 00:06:57,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:06:57,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 00:06:57,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973919223] [2020-10-15 00:06:57,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 00:06:57,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:06:57,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 00:06:57,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:06:57,916 INFO L87 Difference]: Start difference. First operand 289 states and 316 transitions. Second operand 21 states. [2020-10-15 00:06:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:06:58,212 INFO L93 Difference]: Finished difference Result 564 states and 629 transitions. [2020-10-15 00:06:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:06:58,213 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 167 [2020-10-15 00:06:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:06:58,216 INFO L225 Difference]: With dead ends: 564 [2020-10-15 00:06:58,216 INFO L226 Difference]: Without dead ends: 301 [2020-10-15 00:06:58,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:06:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-15 00:06:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2020-10-15 00:06:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-15 00:06:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 328 transitions. [2020-10-15 00:06:58,284 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 328 transitions. Word has length 167 [2020-10-15 00:06:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:06:58,284 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 328 transitions. [2020-10-15 00:06:58,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 00:06:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 328 transitions. [2020-10-15 00:06:58,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-15 00:06:58,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:06:58,287 INFO L422 BasicCegarLoop]: trace histogram [114, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:06:58,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:06:58,287 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:06:58,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:06:58,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1659657291, now seen corresponding path program 24 times [2020-10-15 00:06:58,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:06:58,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69597261] [2020-10-15 00:06:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:06:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:06:58,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:58,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:06:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-15 00:07:03,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:07:03,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 00:07:03,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:07:03,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:07:03,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:07:03,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:03,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:03,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:03,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:03,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:07:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:03,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:03,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:03,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:03,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:03,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:03,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:03,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 00:07:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:03,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:03,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-15 00:07:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:03,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:03,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:03,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:03,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-15 00:07:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:03,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:03,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:03,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:03,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-15 00:07:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:03,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:03,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:03,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:03,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-15 00:07:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:03,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:03,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:03,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:03,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:03,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:03,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:03,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:03,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:03,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:03,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 2018 proven. 190 refuted. 0 times theorem prover too weak. 5055 trivial. 0 not checked. [2020-10-15 00:07:03,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69597261] [2020-10-15 00:07:03,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:03,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:07:03,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974272393] [2020-10-15 00:07:03,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:07:03,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:03,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:07:03,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:07:03,753 INFO L87 Difference]: Start difference. First operand 301 states and 328 transitions. Second operand 22 states. [2020-10-15 00:07:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:04,078 INFO L93 Difference]: Finished difference Result 587 states and 652 transitions. [2020-10-15 00:07:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 00:07:04,079 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 173 [2020-10-15 00:07:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:04,081 INFO L225 Difference]: With dead ends: 587 [2020-10-15 00:07:04,081 INFO L226 Difference]: Without dead ends: 313 [2020-10-15 00:07:04,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:07:04,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-15 00:07:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2020-10-15 00:07:04,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-15 00:07:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 340 transitions. [2020-10-15 00:07:04,122 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 340 transitions. Word has length 173 [2020-10-15 00:07:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:04,122 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 340 transitions. [2020-10-15 00:07:04,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:07:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 340 transitions. [2020-10-15 00:07:04,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-15 00:07:04,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:04,123 INFO L422 BasicCegarLoop]: trace histogram [120, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:04,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:07:04,124 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:04,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:04,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1817990751, now seen corresponding path program 25 times [2020-10-15 00:07:04,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:04,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056816369] [2020-10-15 00:07:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:04,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:04,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:09,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:09,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-15 00:07:09,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:07:09,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 00:07:09,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:09,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:09,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:07:09,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-15 00:07:09,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:07:09,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:09,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:09,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:09,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:09,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:09,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:09,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:09,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 00:07:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:09,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:09,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:09,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:09,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:09,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:09,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:09,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:09,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:09,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 00:07:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:09,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:09,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:09,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:09,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:09,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:09,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:09,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-15 00:07:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:09,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:09,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:09,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:07:09,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:09,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:09,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:09,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-15 00:07:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:09,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:09,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:09,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:09,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:09,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:09,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:09,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:09,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-15 00:07:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:09,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:09,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:09,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:09,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:09,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:09,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:09,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:09,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-15 00:07:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:09,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:09,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:09,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:09,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:09,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:09,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:09,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7998 backedges. 4891 proven. 210 refuted. 0 times theorem prover too weak. 2897 trivial. 0 not checked. [2020-10-15 00:07:09,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056816369] [2020-10-15 00:07:09,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:09,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 00:07:09,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034034238] [2020-10-15 00:07:09,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 00:07:09,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:09,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 00:07:09,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:07:09,632 INFO L87 Difference]: Start difference. First operand 313 states and 340 transitions. Second operand 23 states. [2020-10-15 00:07:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:09,989 INFO L93 Difference]: Finished difference Result 610 states and 675 transitions. [2020-10-15 00:07:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:07:09,990 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 179 [2020-10-15 00:07:09,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:09,992 INFO L225 Difference]: With dead ends: 610 [2020-10-15 00:07:09,993 INFO L226 Difference]: Without dead ends: 325 [2020-10-15 00:07:09,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:07:09,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-15 00:07:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2020-10-15 00:07:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-15 00:07:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 352 transitions. [2020-10-15 00:07:10,040 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 352 transitions. Word has length 179 [2020-10-15 00:07:10,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:10,041 INFO L479 AbstractCegarLoop]: Abstraction has 325 states and 352 transitions. [2020-10-15 00:07:10,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:07:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 352 transitions. [2020-10-15 00:07:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 00:07:10,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:10,042 INFO L422 BasicCegarLoop]: trace histogram [126, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:10,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:07:10,043 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:10,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1033499509, now seen corresponding path program 26 times [2020-10-15 00:07:10,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:10,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304002364] [2020-10-15 00:07:10,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:15,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-15 00:07:15,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:07:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-15 00:07:15,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:15,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:07:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:07:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:07:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:15,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:15,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:15,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:15,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:15,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:15,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:15,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:15,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:07:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:15,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-15 00:07:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:15,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:15,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:15,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:15,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:15,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:15,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:15,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:15,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:15,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:15,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:15,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-15 00:07:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:15,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:15,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:15,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:15,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:15,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:15,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:15,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-15 00:07:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:15,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:15,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:15,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:15,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:15,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-15 00:07:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:15,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:15,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:15,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:15,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:15,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:15,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:15,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-15 00:07:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:15,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:15,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:15,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:15,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:15,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:15,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:15,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:15,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:15,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8769 backedges. 2438 proven. 231 refuted. 0 times theorem prover too weak. 6100 trivial. 0 not checked. [2020-10-15 00:07:15,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304002364] [2020-10-15 00:07:15,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:15,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:07:15,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944615273] [2020-10-15 00:07:15,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:07:15,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:15,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:07:15,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:07:15,657 INFO L87 Difference]: Start difference. First operand 325 states and 352 transitions. Second operand 24 states. [2020-10-15 00:07:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:16,069 INFO L93 Difference]: Finished difference Result 633 states and 698 transitions. [2020-10-15 00:07:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 00:07:16,070 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 185 [2020-10-15 00:07:16,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:16,072 INFO L225 Difference]: With dead ends: 633 [2020-10-15 00:07:16,073 INFO L226 Difference]: Without dead ends: 337 [2020-10-15 00:07:16,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:07:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-15 00:07:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-10-15 00:07:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-15 00:07:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 364 transitions. [2020-10-15 00:07:16,140 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 364 transitions. Word has length 185 [2020-10-15 00:07:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:16,140 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 364 transitions. [2020-10-15 00:07:16,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:07:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 364 transitions. [2020-10-15 00:07:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-15 00:07:16,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:16,142 INFO L422 BasicCegarLoop]: trace histogram [132, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:16,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:07:16,142 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:16,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:16,142 INFO L82 PathProgramCache]: Analyzing trace with hash 197763169, now seen corresponding path program 27 times [2020-10-15 00:07:16,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:16,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106712414] [2020-10-15 00:07:16,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:16,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:16,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-15 00:07:21,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:07:21,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-15 00:07:21,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:07:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-15 00:07:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:07:21,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:21,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:21,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:07:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:21,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:21,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-15 00:07:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:21,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:21,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:21,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-15 00:07:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:21,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:21,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-15 00:07:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:21,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:21,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-15 00:07:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:21,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:21,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:21,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-15 00:07:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:21,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:21,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:21,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:21,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:21,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:21,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 5861 proven. 253 refuted. 0 times theorem prover too weak. 3462 trivial. 0 not checked. [2020-10-15 00:07:21,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106712414] [2020-10-15 00:07:21,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:21,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 00:07:21,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492689730] [2020-10-15 00:07:21,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 00:07:21,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:21,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 00:07:21,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:07:21,726 INFO L87 Difference]: Start difference. First operand 337 states and 364 transitions. Second operand 25 states. [2020-10-15 00:07:22,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:22,123 INFO L93 Difference]: Finished difference Result 656 states and 721 transitions. [2020-10-15 00:07:22,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:07:22,124 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 191 [2020-10-15 00:07:22,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:22,126 INFO L225 Difference]: With dead ends: 656 [2020-10-15 00:07:22,126 INFO L226 Difference]: Without dead ends: 349 [2020-10-15 00:07:22,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:07:22,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-15 00:07:22,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2020-10-15 00:07:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-15 00:07:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 376 transitions. [2020-10-15 00:07:22,164 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 376 transitions. Word has length 191 [2020-10-15 00:07:22,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:22,164 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 376 transitions. [2020-10-15 00:07:22,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 00:07:22,165 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 376 transitions. [2020-10-15 00:07:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-15 00:07:22,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:22,166 INFO L422 BasicCegarLoop]: trace histogram [138, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:22,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:07:22,166 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:22,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1139342539, now seen corresponding path program 28 times [2020-10-15 00:07:22,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:22,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131043089] [2020-10-15 00:07:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:22,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:22,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-15 00:07:27,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:07:27,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-15 00:07:27,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:07:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-15 00:07:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 00:07:27,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:27,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:27,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:27,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 00:07:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:27,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:27,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 00:07:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:27,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:27,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-15 00:07:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:27,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:27,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:27,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-15 00:07:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:27,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:27,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-15 00:07:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:27,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:27,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:27,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-15 00:07:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:27,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:27,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:27,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:27,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:27,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:27,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:27,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10419 backedges. 6378 proven. 276 refuted. 0 times theorem prover too weak. 3765 trivial. 0 not checked. [2020-10-15 00:07:27,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131043089] [2020-10-15 00:07:27,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:27,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:07:27,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658584533] [2020-10-15 00:07:27,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:07:27,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:27,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:07:27,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:07:27,851 INFO L87 Difference]: Start difference. First operand 349 states and 376 transitions. Second operand 26 states. [2020-10-15 00:07:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:28,400 INFO L93 Difference]: Finished difference Result 679 states and 744 transitions. [2020-10-15 00:07:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 00:07:28,400 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 197 [2020-10-15 00:07:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:28,402 INFO L225 Difference]: With dead ends: 679 [2020-10-15 00:07:28,403 INFO L226 Difference]: Without dead ends: 361 [2020-10-15 00:07:28,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:07:28,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-15 00:07:28,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2020-10-15 00:07:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-10-15 00:07:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 388 transitions. [2020-10-15 00:07:28,478 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 388 transitions. Word has length 197 [2020-10-15 00:07:28,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:28,479 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 388 transitions. [2020-10-15 00:07:28,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:07:28,479 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 388 transitions. [2020-10-15 00:07:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-15 00:07:28,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:28,481 INFO L422 BasicCegarLoop]: trace histogram [144, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:28,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:07:28,481 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:28,482 INFO L82 PathProgramCache]: Analyzing trace with hash 878909217, now seen corresponding path program 29 times [2020-10-15 00:07:28,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:28,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955547313] [2020-10-15 00:07:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:28,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:28,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:29,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:31,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:33,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:33,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-15 00:07:33,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:07:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-15 00:07:33,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:33,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:07:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-15 00:07:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:07:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:34,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:34,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:34,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:34,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:07:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:34,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:34,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:34,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-15 00:07:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:34,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:34,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:34,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:34,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-15 00:07:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:34,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:34,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:34,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:34,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:34,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-15 00:07:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:34,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:34,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:34,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:34,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:34,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-15 00:07:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:34,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:34,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:34,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:34,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:34,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:34,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-15 00:07:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:34,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:34,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:34,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:34,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:34,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11298 backedges. 6915 proven. 300 refuted. 0 times theorem prover too weak. 4083 trivial. 0 not checked. [2020-10-15 00:07:34,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955547313] [2020-10-15 00:07:34,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:34,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 00:07:34,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404527721] [2020-10-15 00:07:34,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 00:07:34,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:34,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 00:07:34,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:07:34,145 INFO L87 Difference]: Start difference. First operand 361 states and 388 transitions. Second operand 27 states. [2020-10-15 00:07:34,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:34,609 INFO L93 Difference]: Finished difference Result 702 states and 767 transitions. [2020-10-15 00:07:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:07:34,610 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 203 [2020-10-15 00:07:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:34,612 INFO L225 Difference]: With dead ends: 702 [2020-10-15 00:07:34,612 INFO L226 Difference]: Without dead ends: 373 [2020-10-15 00:07:34,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:07:34,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-15 00:07:34,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2020-10-15 00:07:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-10-15 00:07:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 400 transitions. [2020-10-15 00:07:34,676 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 400 transitions. Word has length 203 [2020-10-15 00:07:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:34,677 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 400 transitions. [2020-10-15 00:07:34,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 00:07:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 400 transitions. [2020-10-15 00:07:34,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-15 00:07:34,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:34,678 INFO L422 BasicCegarLoop]: trace histogram [150, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:34,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:07:34,679 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:34,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:34,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1050858229, now seen corresponding path program 30 times [2020-10-15 00:07:34,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:34,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314602067] [2020-10-15 00:07:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:34,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:35,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:35,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:39,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:39,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-15 00:07:39,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:07:39,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 00:07:39,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:39,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:39,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:07:39,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-15 00:07:39,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:07:39,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:40,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:40,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:40,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-15 00:07:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:40,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:40,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-15 00:07:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:40,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:40,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:40,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:40,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-15 00:07:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:40,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:40,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:40,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-15 00:07:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:40,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:40,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:40,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-15 00:07:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:40,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:40,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:40,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-15 00:07:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:40,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:40,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:40,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:40,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:40,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 7478 proven. 325 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2020-10-15 00:07:40,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314602067] [2020-10-15 00:07:40,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:40,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:07:40,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416434801] [2020-10-15 00:07:40,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:07:40,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:40,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:07:40,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:07:40,388 INFO L87 Difference]: Start difference. First operand 373 states and 400 transitions. Second operand 28 states. [2020-10-15 00:07:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:40,901 INFO L93 Difference]: Finished difference Result 725 states and 790 transitions. [2020-10-15 00:07:40,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 00:07:40,902 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 209 [2020-10-15 00:07:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:40,904 INFO L225 Difference]: With dead ends: 725 [2020-10-15 00:07:40,905 INFO L226 Difference]: Without dead ends: 385 [2020-10-15 00:07:40,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:07:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-15 00:07:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2020-10-15 00:07:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-15 00:07:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 412 transitions. [2020-10-15 00:07:40,963 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 412 transitions. Word has length 209 [2020-10-15 00:07:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:40,963 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 412 transitions. [2020-10-15 00:07:40,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:07:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 412 transitions. [2020-10-15 00:07:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-15 00:07:40,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:40,965 INFO L422 BasicCegarLoop]: trace histogram [156, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:40,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:07:40,965 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:40,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1980232223, now seen corresponding path program 31 times [2020-10-15 00:07:40,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:40,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774192573] [2020-10-15 00:07:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:41,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:41,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:41,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-15 00:07:46,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:07:46,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5121 [2020-10-15 00:07:46,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:07:46,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:07:46,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:07:46,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:46,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:46,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:46,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:46,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:07:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:46,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:46,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-15 00:07:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:46,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:46,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-15 00:07:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:46,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:46,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-15 00:07:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:46,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:46,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-15 00:07:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-15 00:07:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:46,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:46,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:46,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:46,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:46,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:46,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13164 backedges. 3663 proven. 351 refuted. 0 times theorem prover too weak. 9150 trivial. 0 not checked. [2020-10-15 00:07:46,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774192573] [2020-10-15 00:07:46,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:46,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 00:07:46,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020376752] [2020-10-15 00:07:46,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 00:07:46,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:46,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 00:07:46,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:07:46,777 INFO L87 Difference]: Start difference. First operand 385 states and 412 transitions. Second operand 29 states. [2020-10-15 00:07:47,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:47,329 INFO L93 Difference]: Finished difference Result 748 states and 813 transitions. [2020-10-15 00:07:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:07:47,330 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 215 [2020-10-15 00:07:47,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:47,332 INFO L225 Difference]: With dead ends: 748 [2020-10-15 00:07:47,332 INFO L226 Difference]: Without dead ends: 397 [2020-10-15 00:07:47,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:07:47,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-15 00:07:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2020-10-15 00:07:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-15 00:07:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 424 transitions. [2020-10-15 00:07:47,387 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 424 transitions. Word has length 215 [2020-10-15 00:07:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:47,387 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 424 transitions. [2020-10-15 00:07:47,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 00:07:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 424 transitions. [2020-10-15 00:07:47,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-15 00:07:47,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:47,389 INFO L422 BasicCegarLoop]: trace histogram [162, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:47,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:07:47,389 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:47,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:47,390 INFO L82 PathProgramCache]: Analyzing trace with hash 760570549, now seen corresponding path program 32 times [2020-10-15 00:07:47,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:47,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241954924] [2020-10-15 00:07:47,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:47,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:47,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-15 00:07:52,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:07:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-15 00:07:52,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:52,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 00:07:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-15 00:07:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:07:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:53,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:53,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:53,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:53,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:53,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 00:07:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:53,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:53,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:53,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-15 00:07:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:53,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:53,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-15 00:07:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:53,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:53,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:53,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-15 00:07:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:53,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:53,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:53,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:53,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-15 00:07:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:53,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:07:53,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-15 00:07:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:53,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:53,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:53,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:53,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:53,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:53,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 14151 backedges. 8666 proven. 378 refuted. 0 times theorem prover too weak. 5107 trivial. 0 not checked. [2020-10-15 00:07:53,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241954924] [2020-10-15 00:07:53,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:53,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:07:53,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683201858] [2020-10-15 00:07:53,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:07:53,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:53,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:07:53,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:07:53,199 INFO L87 Difference]: Start difference. First operand 397 states and 424 transitions. Second operand 30 states. [2020-10-15 00:07:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:07:53,763 INFO L93 Difference]: Finished difference Result 771 states and 836 transitions. [2020-10-15 00:07:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 00:07:53,764 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 221 [2020-10-15 00:07:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:07:53,766 INFO L225 Difference]: With dead ends: 771 [2020-10-15 00:07:53,766 INFO L226 Difference]: Without dead ends: 409 [2020-10-15 00:07:53,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:07:53,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-15 00:07:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2020-10-15 00:07:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-10-15 00:07:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 436 transitions. [2020-10-15 00:07:53,824 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 436 transitions. Word has length 221 [2020-10-15 00:07:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:07:53,825 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 436 transitions. [2020-10-15 00:07:53,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 00:07:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 436 transitions. [2020-10-15 00:07:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-15 00:07:53,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:07:53,827 INFO L422 BasicCegarLoop]: trace histogram [168, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:07:53,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:07:53,827 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:07:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:07:53,828 INFO L82 PathProgramCache]: Analyzing trace with hash 386958497, now seen corresponding path program 33 times [2020-10-15 00:07:53,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:07:53,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511349196] [2020-10-15 00:07:53,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:07:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:53,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:54,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:58,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-15 00:07:58,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:07:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-15 00:07:58,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:58,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 00:07:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-15 00:07:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:07:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:07:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:59,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:07:59,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:59,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:07:59,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:59,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:59,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:07:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 00:07:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:59,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:59,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:59,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:59,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:59,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:59,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:59,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-15 00:07:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:59,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:59,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:59,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:59,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:59,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:59,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:59,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:59,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-15 00:07:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:59,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:59,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:59,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:59,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:59,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:07:59,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:59,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:59,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-15 00:07:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:59,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:59,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:59,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:59,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:59,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:59,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:59,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:59,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:59,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:59,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-15 00:07:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:59,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:59,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:59,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:59,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:59,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:59,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-15 00:07:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:07:59,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:07:59,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:07:59,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:07:59,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:07:59,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:07:59,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:07:59,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:07:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:07:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:07:59,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:07:59,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:07:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 15174 backedges. 9293 proven. 406 refuted. 0 times theorem prover too weak. 5475 trivial. 0 not checked. [2020-10-15 00:07:59,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511349196] [2020-10-15 00:07:59,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:07:59,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 00:07:59,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78921034] [2020-10-15 00:07:59,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 00:07:59,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:07:59,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 00:07:59,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:07:59,713 INFO L87 Difference]: Start difference. First operand 409 states and 436 transitions. Second operand 31 states. [2020-10-15 00:08:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:00,339 INFO L93 Difference]: Finished difference Result 794 states and 859 transitions. [2020-10-15 00:08:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:08:00,339 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 227 [2020-10-15 00:08:00,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:00,341 INFO L225 Difference]: With dead ends: 794 [2020-10-15 00:08:00,341 INFO L226 Difference]: Without dead ends: 421 [2020-10-15 00:08:00,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:08:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-15 00:08:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-10-15 00:08:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-15 00:08:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 448 transitions. [2020-10-15 00:08:00,401 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 448 transitions. Word has length 227 [2020-10-15 00:08:00,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:00,401 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 448 transitions. [2020-10-15 00:08:00,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 00:08:00,401 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 448 transitions. [2020-10-15 00:08:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-15 00:08:00,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:00,403 INFO L422 BasicCegarLoop]: trace histogram [174, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:00,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 00:08:00,404 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:00,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1303989643, now seen corresponding path program 34 times [2020-10-15 00:08:00,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:00,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26284391] [2020-10-15 00:08:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:01,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:05,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:05,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-15 00:08:05,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:08:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-15 00:08:05,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:05,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 00:08:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-15 00:08:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:08:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:06,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:06,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:06,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-15 00:08:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:06,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:06,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:06,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:06,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:06,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 00:08:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:06,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:06,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-15 00:08:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:06,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:06,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:06,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-15 00:08:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:06,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:06,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:06,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-15 00:08:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:06,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:06,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:06,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:06,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-15 00:08:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:06,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:06,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:06,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:06,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:06,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:06,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:06,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:06,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:06,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16233 backedges. 9940 proven. 435 refuted. 0 times theorem prover too weak. 5858 trivial. 0 not checked. [2020-10-15 00:08:06,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26284391] [2020-10-15 00:08:06,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:06,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 00:08:06,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793914146] [2020-10-15 00:08:06,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 00:08:06,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:06,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 00:08:06,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:08:06,284 INFO L87 Difference]: Start difference. First operand 421 states and 448 transitions. Second operand 32 states. [2020-10-15 00:08:06,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:06,911 INFO L93 Difference]: Finished difference Result 817 states and 882 transitions. [2020-10-15 00:08:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 00:08:06,911 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 233 [2020-10-15 00:08:06,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:06,913 INFO L225 Difference]: With dead ends: 817 [2020-10-15 00:08:06,913 INFO L226 Difference]: Without dead ends: 433 [2020-10-15 00:08:06,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2020-10-15 00:08:06,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-15 00:08:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2020-10-15 00:08:06,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-15 00:08:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 460 transitions. [2020-10-15 00:08:06,963 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 460 transitions. Word has length 233 [2020-10-15 00:08:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:06,963 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 460 transitions. [2020-10-15 00:08:06,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 00:08:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 460 transitions. [2020-10-15 00:08:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-15 00:08:06,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:06,965 INFO L422 BasicCegarLoop]: trace histogram [180, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:06,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-15 00:08:06,966 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:06,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:06,966 INFO L82 PathProgramCache]: Analyzing trace with hash -197887135, now seen corresponding path program 35 times [2020-10-15 00:08:06,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:06,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708231603] [2020-10-15 00:08:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:07,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-15 00:08:12,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:08:12,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-15 00:08:12,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 00:08:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-15 00:08:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:08:12,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:12,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:12,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:12,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:12,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 00:08:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:12,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:12,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-15 00:08:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:12,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:12,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:12,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:12,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:12,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-15 00:08:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:12,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:12,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:12,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-15 00:08:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:12,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:12,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:12,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-15 00:08:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:12,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:08:12,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:12,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-15 00:08:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:12,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:12,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:12,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:12,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:12,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:12,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 17328 backedges. 10613 proven. 465 refuted. 0 times theorem prover too weak. 6250 trivial. 0 not checked. [2020-10-15 00:08:12,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708231603] [2020-10-15 00:08:12,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:12,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-15 00:08:12,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119723284] [2020-10-15 00:08:12,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 00:08:12,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:12,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 00:08:12,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:08:12,990 INFO L87 Difference]: Start difference. First operand 433 states and 460 transitions. Second operand 33 states. [2020-10-15 00:08:13,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:13,647 INFO L93 Difference]: Finished difference Result 840 states and 905 transitions. [2020-10-15 00:08:13,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:08:13,648 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 239 [2020-10-15 00:08:13,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:13,650 INFO L225 Difference]: With dead ends: 840 [2020-10-15 00:08:13,650 INFO L226 Difference]: Without dead ends: 445 [2020-10-15 00:08:13,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:08:13,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-10-15 00:08:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2020-10-15 00:08:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-15 00:08:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 472 transitions. [2020-10-15 00:08:13,711 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 472 transitions. Word has length 239 [2020-10-15 00:08:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:13,712 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 472 transitions. [2020-10-15 00:08:13,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-15 00:08:13,712 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 472 transitions. [2020-10-15 00:08:13,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-15 00:08:13,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:13,713 INFO L422 BasicCegarLoop]: trace histogram [186, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:13,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-15 00:08:13,713 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:13,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:13,714 INFO L82 PathProgramCache]: Analyzing trace with hash 965657141, now seen corresponding path program 36 times [2020-10-15 00:08:13,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:13,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642601930] [2020-10-15 00:08:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:13,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:13,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:14,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:14,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:18,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:18,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-15 00:08:18,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:08:18,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-15 00:08:18,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:18,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 00:08:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-15 00:08:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:08:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:19,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:19,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:19,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:19,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:19,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-15 00:08:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:19,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:19,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:19,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-15 00:08:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:19,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:19,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:19,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:19,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-15 00:08:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:19,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:19,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:19,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:19,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:19,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:19,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-15 00:08:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:19,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:19,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:19,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-15 00:08:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:19,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:19,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:19,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:19,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-15 00:08:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:19,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:19,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:19,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:19,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:19,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:19,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18459 backedges. 11304 proven. 496 refuted. 0 times theorem prover too weak. 6659 trivial. 0 not checked. [2020-10-15 00:08:19,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642601930] [2020-10-15 00:08:19,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:19,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 00:08:19,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409293691] [2020-10-15 00:08:19,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 00:08:19,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:19,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 00:08:19,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:08:19,677 INFO L87 Difference]: Start difference. First operand 445 states and 472 transitions. Second operand 34 states. [2020-10-15 00:08:20,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:20,389 INFO L93 Difference]: Finished difference Result 863 states and 928 transitions. [2020-10-15 00:08:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 00:08:20,389 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 245 [2020-10-15 00:08:20,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:20,391 INFO L225 Difference]: With dead ends: 863 [2020-10-15 00:08:20,392 INFO L226 Difference]: Without dead ends: 457 [2020-10-15 00:08:20,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 00:08:20,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-15 00:08:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2020-10-15 00:08:20,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-15 00:08:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 484 transitions. [2020-10-15 00:08:20,455 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 484 transitions. Word has length 245 [2020-10-15 00:08:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:20,455 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 484 transitions. [2020-10-15 00:08:20,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 00:08:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 484 transitions. [2020-10-15 00:08:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-15 00:08:20,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:20,457 INFO L422 BasicCegarLoop]: trace histogram [192, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:20,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-15 00:08:20,458 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:20,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:20,458 INFO L82 PathProgramCache]: Analyzing trace with hash -940838367, now seen corresponding path program 37 times [2020-10-15 00:08:20,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:20,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980287842] [2020-10-15 00:08:20,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:20,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:25,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:25,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-15 00:08:25,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:08:25,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-15 00:08:25,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:25,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 00:08:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-15 00:08:25,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:08:25,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:08:26,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:08:26,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 00:08:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:26,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:26,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-15 00:08:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:26,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:26,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:26,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-15 00:08:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:26,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:08:26,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-15 00:08:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:26,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:26,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-10-15 00:08:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:26,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:26,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:26,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-15 00:08:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:26,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:26,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:08:26,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:08:26,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:26,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:08:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:08:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 19626 backedges. 12021 proven. 528 refuted. 0 times theorem prover too weak. 7077 trivial. 0 not checked. [2020-10-15 00:08:26,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980287842] [2020-10-15 00:08:26,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:26,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-15 00:08:26,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335709907] [2020-10-15 00:08:26,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-15 00:08:26,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:26,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-15 00:08:26,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 00:08:26,549 INFO L87 Difference]: Start difference. First operand 457 states and 484 transitions. Second operand 35 states. [2020-10-15 00:08:27,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:27,309 INFO L93 Difference]: Finished difference Result 886 states and 951 transitions. [2020-10-15 00:08:27,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:08:27,310 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 251 [2020-10-15 00:08:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:27,311 INFO L225 Difference]: With dead ends: 886 [2020-10-15 00:08:27,311 INFO L226 Difference]: Without dead ends: 469 [2020-10-15 00:08:27,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 00:08:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-15 00:08:27,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2020-10-15 00:08:27,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-10-15 00:08:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 496 transitions. [2020-10-15 00:08:27,374 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 496 transitions. Word has length 251 [2020-10-15 00:08:27,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:27,375 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 496 transitions. [2020-10-15 00:08:27,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-15 00:08:27,375 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 496 transitions. [2020-10-15 00:08:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-15 00:08:27,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:27,377 INFO L422 BasicCegarLoop]: trace histogram [198, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:27,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-15 00:08:27,377 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:27,378 INFO L82 PathProgramCache]: Analyzing trace with hash -247098891, now seen corresponding path program 38 times [2020-10-15 00:08:27,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:27,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143188] [2020-10-15 00:08:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:28,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:28,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking...