/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:45:01,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:45:01,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:45:01,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:45:01,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:45:01,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:45:01,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:45:01,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:45:01,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:45:01,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:45:01,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:45:01,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:45:01,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:45:01,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:45:01,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:45:01,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:45:01,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:45:01,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:45:01,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:45:01,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:45:01,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:45:01,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:45:01,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:45:01,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:45:01,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:45:01,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:45:01,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:45:01,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:45:01,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:45:01,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:45:01,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:45:01,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:45:01,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:45:01,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:45:01,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:45:01,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:45:01,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:45:01,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:45:01,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:45:01,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:45:01,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:45:01,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:45:01,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:45:01,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:45:01,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:45:01,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:45:01,553 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:45:01,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:45:01,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:45:01,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:45:01,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:45:01,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:45:01,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:45:01,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:45:01,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:45:01,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:45:01,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:45:01,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:45:01,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:45:01,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:45:01,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:45:01,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:45:01,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:45:01,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:45:01,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:45:01,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:45:01,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:45:01,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:45:01,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:45:01,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:45:01,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:45:01,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:45:02,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:45:02,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:45:02,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:45:02,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:45:02,074 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:45:02,075 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-24 23:45:02,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/860f83149/4131087a67d84449a9aaaba5bf2c8097/FLAGf7d7af734 [2020-09-24 23:45:02,747 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:45:02,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-24 23:45:02,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/860f83149/4131087a67d84449a9aaaba5bf2c8097/FLAGf7d7af734 [2020-09-24 23:45:03,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/860f83149/4131087a67d84449a9aaaba5bf2c8097 [2020-09-24 23:45:03,102 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:45:03,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:45:03,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:45:03,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:45:03,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:45:03,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:45:03" (1/1) ... [2020-09-24 23:45:03,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03, skipping insertion in model container [2020-09-24 23:45:03,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:45:03" (1/1) ... [2020-09-24 23:45:03,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:45:03,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:45:03,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:45:03,376 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:45:03,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:45:03,417 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:45:03,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03 WrapperNode [2020-09-24 23:45:03,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:45:03,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:45:03,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:45:03,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:45:03,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03" (1/1) ... [2020-09-24 23:45:03,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03" (1/1) ... [2020-09-24 23:45:03,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03" (1/1) ... [2020-09-24 23:45:03,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03" (1/1) ... [2020-09-24 23:45:03,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03" (1/1) ... [2020-09-24 23:45:03,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03" (1/1) ... [2020-09-24 23:45:03,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03" (1/1) ... [2020-09-24 23:45:03,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:45:03,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:45:03,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:45:03,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:45:03,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:45:03,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:45:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:45:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-09-24 23:45:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-09-24 23:45:03,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:45:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:45:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:45:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-09-24 23:45:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-09-24 23:45:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:45:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:45:03,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:45:03,916 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:45:03,917 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:45:03,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:45:03 BoogieIcfgContainer [2020-09-24 23:45:03,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:45:03,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:45:03,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:45:03,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:45:03,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:45:03" (1/3) ... [2020-09-24 23:45:03,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54462d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:45:03, skipping insertion in model container [2020-09-24 23:45:03,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:45:03" (2/3) ... [2020-09-24 23:45:03,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54462d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:45:03, skipping insertion in model container [2020-09-24 23:45:03,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:45:03" (3/3) ... [2020-09-24 23:45:03,946 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-09-24 23:45:03,960 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:45:03,969 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:45:03,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:45:04,020 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:45:04,021 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:45:04,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:45:04,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:45:04,021 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:45:04,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:45:04,021 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:45:04,021 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:45:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 23:45:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 23:45:04,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:04,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:04,052 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:04,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:04,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1047957633, now seen corresponding path program 1 times [2020-09-24 23:45:04,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:04,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616500676] [2020-09-24 23:45:04,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:04,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:04,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:04,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 23:45:04,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-24 23:45:04,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:45:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:04,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:45:04,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:45:04,730 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-09-24 23:45:04,877 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-09-24 23:45:04,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:04,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:04,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:04,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:04,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:45:04,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:04,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:04,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:04,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:04,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:04,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:04,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 23:45:04,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:45:05,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616500676] [2020-09-24 23:45:05,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:45:05,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:45:05,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310618119] [2020-09-24 23:45:05,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:45:05,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:05,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:45:05,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:45:05,045 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2020-09-24 23:45:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:05,329 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-09-24 23:45:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:45:05,331 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-24 23:45:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:05,346 INFO L225 Difference]: With dead ends: 60 [2020-09-24 23:45:05,346 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 23:45:05,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:45:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 23:45:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-24 23:45:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 23:45:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-24 23:45:05,413 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-09-24 23:45:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:05,413 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-24 23:45:05,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:45:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-24 23:45:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 23:45:05,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:05,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:05,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:45:05,417 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:05,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1743555941, now seen corresponding path program 1 times [2020-09-24 23:45:05,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:05,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210204456] [2020-09-24 23:45:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:05,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:05,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 23:45:05,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:05,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 23:45:05,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:45:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 23:45:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:05,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:05,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:05,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:05,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:45:05,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:05,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:05,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:05,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:05,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:05,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 23:45:05,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:05,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:45:05,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:05,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:45:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:45:06,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210204456] [2020-09-24 23:45:06,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:45:06,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:45:06,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394571136] [2020-09-24 23:45:06,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:45:06,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:06,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:45:06,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:45:06,045 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2020-09-24 23:45:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:06,211 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-09-24 23:45:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:45:06,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-24 23:45:06,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:06,213 INFO L225 Difference]: With dead ends: 49 [2020-09-24 23:45:06,214 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 23:45:06,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:45:06,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 23:45:06,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-24 23:45:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 23:45:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-24 23:45:06,223 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2020-09-24 23:45:06,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:06,224 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-24 23:45:06,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:45:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-24 23:45:06,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 23:45:06,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:06,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:06,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:45:06,227 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:06,227 INFO L82 PathProgramCache]: Analyzing trace with hash 698419476, now seen corresponding path program 1 times [2020-09-24 23:45:06,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:06,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604151866] [2020-09-24 23:45:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:06,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:06,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:06,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:06,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 23:45:06,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:06,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-24 23:45:06,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:45:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:06,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:45:06,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:45:06,698 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 15 [2020-09-24 23:45:06,827 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 15 [2020-09-24 23:45:06,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:06,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:06,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:06,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:06,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:45:06,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:06,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:06,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:06,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:06,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:06,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:06,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:06,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:45:06,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:06,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 23:45:06,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:45:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:45:06,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:06,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:06,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:06,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:06,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:06,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:06,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:45:06,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:06,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:06,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:45:07,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604151866] [2020-09-24 23:45:07,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:45:07,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 23:45:07,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336724237] [2020-09-24 23:45:07,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:45:07,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:07,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:45:07,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:45:07,045 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 11 states. [2020-09-24 23:45:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:07,317 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-24 23:45:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:45:07,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-24 23:45:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:07,323 INFO L225 Difference]: With dead ends: 54 [2020-09-24 23:45:07,323 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 23:45:07,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:45:07,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 23:45:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-24 23:45:07,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 23:45:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-24 23:45:07,338 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2020-09-24 23:45:07,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:07,340 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-24 23:45:07,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:45:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-24 23:45:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 23:45:07,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:07,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:07,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:45:07,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:07,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:07,351 INFO L82 PathProgramCache]: Analyzing trace with hash 735393428, now seen corresponding path program 1 times [2020-09-24 23:45:07,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:07,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592691356] [2020-09-24 23:45:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:07,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:07,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 23:45:07,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:07,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 23:45:07,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:07,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:45:07,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:45:07,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:07,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:07,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:07,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:07,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:07,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:45:07,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:07,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:07,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:07,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:07,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:07,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:45:07,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:07,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 23:45:07,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:45:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:45:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:07,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:07,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:07,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:07,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:07,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 23:45:07,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:45:07,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592691356] [2020-09-24 23:45:07,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:45:07,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 23:45:07,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927584482] [2020-09-24 23:45:07,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:45:07,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:07,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:45:07,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:45:07,981 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 11 states. [2020-09-24 23:45:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:08,233 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-09-24 23:45:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:45:08,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-24 23:45:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:08,236 INFO L225 Difference]: With dead ends: 59 [2020-09-24 23:45:08,236 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 23:45:08,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:45:08,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 23:45:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-09-24 23:45:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 23:45:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-24 23:45:08,245 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 30 [2020-09-24 23:45:08,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:08,245 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-24 23:45:08,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:45:08,246 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-24 23:45:08,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 23:45:08,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:08,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:08,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:45:08,248 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:08,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:08,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1128861445, now seen corresponding path program 1 times [2020-09-24 23:45:08,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:08,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726232469] [2020-09-24 23:45:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:08,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:08,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 23:45:08,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:08,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-24 23:45:08,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:08,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:45:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 23:45:08,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:08,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:08,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:08,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:08,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:08,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:45:08,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:08,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:08,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:08,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:08,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:08,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:08,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:45:08,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 23:45:08,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:45:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:45:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:08,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:08,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:08,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:08,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:45:08,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 23:45:08,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:45:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:08,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:08,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:08,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:08,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:08,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:45:08,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:08,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 23:45:09,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726232469] [2020-09-24 23:45:09,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:09,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 23:45:09,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112623449] [2020-09-24 23:45:09,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:45:09,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:09,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:45:09,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:45:09,055 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-09-24 23:45:09,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:09,495 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-24 23:45:09,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 23:45:09,496 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-09-24 23:45:09,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:09,498 INFO L225 Difference]: With dead ends: 64 [2020-09-24 23:45:09,498 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 23:45:09,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:45:09,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 23:45:09,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-24 23:45:09,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 23:45:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-24 23:45:09,507 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 38 [2020-09-24 23:45:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:09,508 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-24 23:45:09,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 23:45:09,508 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-24 23:45:09,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 23:45:09,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:09,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:09,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:45:09,510 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:09,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:09,511 INFO L82 PathProgramCache]: Analyzing trace with hash -211667235, now seen corresponding path program 1 times [2020-09-24 23:45:09,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:09,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043442379] [2020-09-24 23:45:09,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:09,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:09,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:09,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 23:45:09,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:09,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-24 23:45:09,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:45:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 23:45:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:09,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:09,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:09,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:09,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:09,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:09,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:09,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:09,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:10,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:10,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:45:10,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 23:45:10,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:45:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:10,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:45:10,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:10,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:10,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:45:10,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 23:45:10,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:45:10,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:10,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:10,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:10,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:10,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:10,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 23:45:10,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:10,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:10,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:10,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:10,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:45:10,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043442379] [2020-09-24 23:45:10,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:10,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 23:45:10,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827623150] [2020-09-24 23:45:10,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:45:10,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:10,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:45:10,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:45:10,350 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 13 states. [2020-09-24 23:45:10,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:10,787 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-09-24 23:45:10,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 23:45:10,787 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-09-24 23:45:10,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:10,789 INFO L225 Difference]: With dead ends: 69 [2020-09-24 23:45:10,789 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 23:45:10,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-09-24 23:45:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 23:45:10,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2020-09-24 23:45:10,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 23:45:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-24 23:45:10,797 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 39 [2020-09-24 23:45:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:10,798 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-24 23:45:10,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 23:45:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-24 23:45:10,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 23:45:10,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:10,800 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:10,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:45:10,800 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:10,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:10,801 INFO L82 PathProgramCache]: Analyzing trace with hash 320612812, now seen corresponding path program 1 times [2020-09-24 23:45:10,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:10,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970108428] [2020-09-24 23:45:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:11,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:11,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 23:45:11,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-24 23:45:11,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 23:45:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 23:45:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:11,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:11,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:11,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:11,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:11,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:11,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:11,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:11,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:11,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:11,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:45:11,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 23:45:11,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 23:45:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 23:45:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:11,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:11,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:11,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:11,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:45:11,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:11,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 23:45:11,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:11,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:11,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:45:11,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:11,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:11,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:11,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:45:11,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 23:45:11,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:45:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:11,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:11,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:11,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:11,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:11,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:45:11,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:11,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 23:45:12,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970108428] [2020-09-24 23:45:12,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:12,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 23:45:12,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845366777] [2020-09-24 23:45:12,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 23:45:12,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:12,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 23:45:12,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-24 23:45:12,006 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 15 states. [2020-09-24 23:45:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:12,585 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-09-24 23:45:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 23:45:12,585 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-24 23:45:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:12,588 INFO L225 Difference]: With dead ends: 74 [2020-09-24 23:45:12,588 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 23:45:12,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-09-24 23:45:12,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 23:45:12,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-09-24 23:45:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 23:45:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-24 23:45:12,602 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 47 [2020-09-24 23:45:12,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:12,602 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-24 23:45:12,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 23:45:12,602 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-24 23:45:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 23:45:12,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:12,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:12,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:45:12,608 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:12,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1757163992, now seen corresponding path program 1 times [2020-09-24 23:45:12,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:12,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560296811] [2020-09-24 23:45:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:13,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:13,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 23:45:13,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:13,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-09-24 23:45:13,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 23:45:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 23:45:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:13,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:13,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:13,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:13,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:13,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:13,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:13,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:13,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:13,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:45:13,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 23:45:13,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 23:45:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:45:13,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:13,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:13,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:13,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:45:13,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 23:45:13,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:45:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:13,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:13,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:13,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:45:13,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 23:45:13,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:13,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:45:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:13,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:13,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:13,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:13,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:13,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:45:13,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:13,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 23:45:13,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560296811] [2020-09-24 23:45:13,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:13,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 23:45:13,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793323057] [2020-09-24 23:45:13,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 23:45:13,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:13,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 23:45:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-24 23:45:13,645 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 15 states. [2020-09-24 23:45:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:14,192 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2020-09-24 23:45:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 23:45:14,192 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-09-24 23:45:14,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:14,196 INFO L225 Difference]: With dead ends: 79 [2020-09-24 23:45:14,197 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 23:45:14,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-09-24 23:45:14,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 23:45:14,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2020-09-24 23:45:14,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 23:45:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-24 23:45:14,211 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 48 [2020-09-24 23:45:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:14,211 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-24 23:45:14,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 23:45:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-24 23:45:14,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 23:45:14,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:14,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:14,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 23:45:14,214 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:14,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:14,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1185852169, now seen corresponding path program 2 times [2020-09-24 23:45:14,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:14,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605100951] [2020-09-24 23:45:14,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:14,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:14,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 23:45:14,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:14,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-24 23:45:14,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 23:45:14,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 23:45:14,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:15,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:15,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:15,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:15,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:45:15,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:15,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 23:45:15,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 23:45:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:45:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:15,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:15,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:15,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:45:15,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:15,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 23:45:15,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:45:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 23:45:15,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:15,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:15,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:15,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:15,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:45:15,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 23:45:15,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:45:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:15,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:15,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:15,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:15,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:15,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:45:15,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 23:45:15,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:45:15,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:15,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:15,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:15,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:15,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:45:15,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:15,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:15,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 23:45:15,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605100951] [2020-09-24 23:45:15,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:15,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 23:45:15,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054359886] [2020-09-24 23:45:15,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 23:45:15,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:15,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 23:45:15,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-24 23:45:15,759 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 17 states. [2020-09-24 23:45:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:16,515 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-09-24 23:45:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 23:45:16,516 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-24 23:45:16,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:16,517 INFO L225 Difference]: With dead ends: 84 [2020-09-24 23:45:16,517 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 23:45:16,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 23:45:16,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 23:45:16,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2020-09-24 23:45:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 23:45:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-24 23:45:16,528 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 56 [2020-09-24 23:45:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:16,528 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-24 23:45:16,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 23:45:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-24 23:45:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 23:45:16,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:16,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:16,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 23:45:16,530 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:16,530 INFO L82 PathProgramCache]: Analyzing trace with hash 338577365, now seen corresponding path program 2 times [2020-09-24 23:45:16,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:16,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860723689] [2020-09-24 23:45:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:17,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:17,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 23:45:17,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:17,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-09-24 23:45:17,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:17,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 23:45:17,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:17,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 23:45:17,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:17,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:17,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:17,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:17,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:17,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:17,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:17,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:17,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:45:17,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:17,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 23:45:17,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 23:45:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:17,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 23:45:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:17,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:17,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:45:17,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:17,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 23:45:17,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:45:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:17,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:45:17,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:17,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:17,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:17,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:45:17,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:17,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 23:45:17,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:17,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:17,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:45:17,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:17,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:17,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:17,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:45:17,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:17,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 23:45:17,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:17,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:17,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:45:17,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:17,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:17,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:17,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:17,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:17,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:45:17,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 23:45:17,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860723689] [2020-09-24 23:45:17,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:17,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 23:45:17,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449863927] [2020-09-24 23:45:17,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 23:45:17,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:17,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 23:45:17,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-24 23:45:17,856 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 17 states. [2020-09-24 23:45:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:18,630 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-09-24 23:45:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 23:45:18,632 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-09-24 23:45:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:18,633 INFO L225 Difference]: With dead ends: 89 [2020-09-24 23:45:18,633 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 23:45:18,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 23:45:18,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 23:45:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2020-09-24 23:45:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 23:45:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-24 23:45:18,652 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 57 [2020-09-24 23:45:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:18,652 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-24 23:45:18,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 23:45:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-24 23:45:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 23:45:18,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:18,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:18,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 23:45:18,657 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:18,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:18,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1560027652, now seen corresponding path program 2 times [2020-09-24 23:45:18,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:18,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383158642] [2020-09-24 23:45:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:19,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:19,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 23:45:19,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:19,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-09-24 23:45:19,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:19,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 23:45:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:19,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 23:45:19,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:19,610 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 12 [2020-09-24 23:45:19,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:19,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:19,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:19,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:19,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:19,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:19,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:19,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:19,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:19,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:19,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:19,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:19,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:19,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:19,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 23:45:19,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-24 23:45:19,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:19,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 23:45:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:19,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 23:45:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:19,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:19,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:19,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:45:19,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:19,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 23:45:19,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:19,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:45:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:19,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:45:19,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:20,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:20,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:20,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:45:20,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 23:45:20,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:45:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 23:45:20,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:20,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:20,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:20,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:45:20,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:20,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 23:45:20,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:20,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:45:20,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:20,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:20,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:20,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:45:20,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 23:45:20,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:20,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:45:20,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:20,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:20,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:20,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:20,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:20,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:45:20,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:20,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:20,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 23:45:20,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383158642] [2020-09-24 23:45:20,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:20,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 23:45:20,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772466234] [2020-09-24 23:45:20,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 23:45:20,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:20,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 23:45:20,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-24 23:45:20,595 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 19 states. [2020-09-24 23:45:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:21,535 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-09-24 23:45:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 23:45:21,535 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 23:45:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:21,536 INFO L225 Difference]: With dead ends: 94 [2020-09-24 23:45:21,537 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 23:45:21,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 23:45:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 23:45:21,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 65. [2020-09-24 23:45:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 23:45:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-24 23:45:21,545 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 65 [2020-09-24 23:45:21,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:21,545 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-24 23:45:21,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 23:45:21,545 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-24 23:45:21,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 23:45:21,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:21,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:21,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 23:45:21,547 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:21,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1346648732, now seen corresponding path program 2 times [2020-09-24 23:45:21,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:21,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789480798] [2020-09-24 23:45:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:21,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:22,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:22,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:45:22,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:22,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-09-24 23:45:22,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 23:45:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 23:45:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:22,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:22,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:22,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:22,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:22,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:22,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:22,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:22,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:22,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:22,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:22,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 23:45:22,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 23:45:22,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 23:45:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 23:45:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:22,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:22,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:22,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:45:22,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 23:45:22,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:45:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 23:45:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:22,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:22,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:22,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:22,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:45:22,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:22,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 23:45:22,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:22,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:45:22,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:22,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:45:22,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:23,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:23,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:23,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:45:23,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 23:45:23,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:45:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:23,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:23,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:23,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:45:23,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 23:45:23,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:45:23,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:23,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:23,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:23,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:23,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:23,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:23,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:45:23,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:23,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:23,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:23,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:23,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-24 23:45:23,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789480798] [2020-09-24 23:45:23,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:23,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 23:45:23,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592129872] [2020-09-24 23:45:23,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 23:45:23,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:23,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 23:45:23,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-24 23:45:23,400 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 19 states. [2020-09-24 23:45:24,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:24,413 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2020-09-24 23:45:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 23:45:24,414 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-09-24 23:45:24,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:24,415 INFO L225 Difference]: With dead ends: 99 [2020-09-24 23:45:24,415 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 23:45:24,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 23:45:24,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 23:45:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2020-09-24 23:45:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 23:45:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-24 23:45:24,424 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 66 [2020-09-24 23:45:24,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:24,425 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-24 23:45:24,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 23:45:24,425 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-24 23:45:24,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 23:45:24,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:24,426 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:24,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 23:45:24,426 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:24,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:24,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1992760179, now seen corresponding path program 3 times [2020-09-24 23:45:24,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:24,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212761102] [2020-09-24 23:45:24,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:24,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:24,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:25,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:25,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 23:45:25,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-09-24 23:45:25,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 23:45:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:25,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 23:45:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:25,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:25,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:25,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:25,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:25,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:25,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:25,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:25,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 23:45:25,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-24 23:45:25,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 23:45:25,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:45:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:25,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:25,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:25,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 23:45:25,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:25,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 23:45:25,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 23:45:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:25,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 23:45:25,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:26,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:26,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:26,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:45:26,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:26,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 23:45:26,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:45:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:26,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:45:26,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:26,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:26,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:26,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:26,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:45:26,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:26,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 23:45:26,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:45:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 23:45:26,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:26,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:26,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:26,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:45:26,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:26,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 23:45:26,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:45:26,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:26,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:26,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:26,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:45:26,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 23:45:26,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:26,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:45:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:26,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:26,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:26,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:26,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:45:26,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:26,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:26,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 23:45:26,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212761102] [2020-09-24 23:45:26,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:26,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 23:45:26,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671928861] [2020-09-24 23:45:26,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 23:45:26,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:26,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 23:45:26,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:45:26,830 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 21 states. [2020-09-24 23:45:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:28,047 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2020-09-24 23:45:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 23:45:28,048 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2020-09-24 23:45:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:28,050 INFO L225 Difference]: With dead ends: 104 [2020-09-24 23:45:28,050 INFO L226 Difference]: Without dead ends: 97 [2020-09-24 23:45:28,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 23:45:28,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-24 23:45:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2020-09-24 23:45:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 23:45:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-24 23:45:28,056 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 74 [2020-09-24 23:45:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:28,057 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-24 23:45:28,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 23:45:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-24 23:45:28,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 23:45:28,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:28,058 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:28,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 23:45:28,059 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:28,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:28,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2107047859, now seen corresponding path program 3 times [2020-09-24 23:45:28,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:28,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761601887] [2020-09-24 23:45:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:28,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:28,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:28,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 23:45:28,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:28,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 870 [2020-09-24 23:45:28,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 23:45:28,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:28,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 23:45:28,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:29,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:29,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:29,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:29,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:29,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:29,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:29,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:29,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:29,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:29,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 23:45:29,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-24 23:45:29,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:29,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 23:45:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 23:45:29,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:29,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:29,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:29,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 23:45:29,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 23:45:29,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 23:45:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 23:45:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-09-24 23:45:29,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:29,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:29,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:29,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:45:29,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 23:45:29,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:45:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:29,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 23:45:29,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:29,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:29,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:29,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:29,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:45:29,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:29,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 23:45:29,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:45:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:45:29,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:30,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:30,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:30,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:45:30,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:30,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 23:45:30,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:45:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:30,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:30,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:30,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:45:30,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 23:45:30,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:45:30,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:30,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:30,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:30,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:30,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:45:30,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:30,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:30,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:30,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-24 23:45:30,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761601887] [2020-09-24 23:45:30,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:30,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 23:45:30,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88581655] [2020-09-24 23:45:30,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 23:45:30,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:30,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 23:45:30,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-09-24 23:45:30,381 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 22 states. [2020-09-24 23:45:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:31,580 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2020-09-24 23:45:31,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 23:45:31,581 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2020-09-24 23:45:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:31,582 INFO L225 Difference]: With dead ends: 109 [2020-09-24 23:45:31,582 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 23:45:31,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 23:45:31,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 23:45:31,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 70. [2020-09-24 23:45:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 23:45:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-24 23:45:31,589 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 75 [2020-09-24 23:45:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:31,589 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-24 23:45:31,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 23:45:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-24 23:45:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 23:45:31,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:31,591 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:31,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 23:45:31,591 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:31,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:31,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1771228740, now seen corresponding path program 3 times [2020-09-24 23:45:31,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:31,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66712362] [2020-09-24 23:45:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:31,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:31,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:32,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:32,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 23:45:32,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:32,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-09-24 23:45:32,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 23:45:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 23:45:32,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:32,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:32,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:32,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:32,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:32,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:32,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:32,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:32,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:33,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 23:45:33,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:33,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-24 23:45:33,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-24 23:45:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 23:45:33,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:33,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:33,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 23:45:33,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:33,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 23:45:33,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 23:45:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:33,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:45:33,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:33,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:33,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:33,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 23:45:33,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-24 23:45:33,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 23:45:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 23:45:33,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:33,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:34,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:45:34,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 23:45:34,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:45:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:45:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:34,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:45:34,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:34,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 23:45:34,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:45:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:34,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 23:45:34,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:34,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:45:34,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:34,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 23:45:34,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:34,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:34,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:45:34,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:34,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:34,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:34,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:45:34,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:34,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 23:45:34,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:34,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:34,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:34,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:45:34,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:34,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:34,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:34,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:34,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:45:34,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:34,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:34,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 23:45:34,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66712362] [2020-09-24 23:45:34,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:34,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 23:45:34,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232110712] [2020-09-24 23:45:34,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 23:45:34,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:34,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 23:45:34,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-09-24 23:45:34,738 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 23 states. [2020-09-24 23:45:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:36,215 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-09-24 23:45:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 23:45:36,215 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2020-09-24 23:45:36,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:36,217 INFO L225 Difference]: With dead ends: 114 [2020-09-24 23:45:36,217 INFO L226 Difference]: Without dead ends: 107 [2020-09-24 23:45:36,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=167, Invalid=2089, Unknown=0, NotChecked=0, Total=2256 [2020-09-24 23:45:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-24 23:45:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2020-09-24 23:45:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 23:45:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-24 23:45:36,223 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 83 [2020-09-24 23:45:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:36,224 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-24 23:45:36,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 23:45:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-24 23:45:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-24 23:45:36,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:36,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:36,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 23:45:36,225 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:36,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1688547104, now seen corresponding path program 3 times [2020-09-24 23:45:36,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:36,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504085527] [2020-09-24 23:45:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:36,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:37,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 23:45:37,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 959 [2020-09-24 23:45:37,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 23:45:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-24 23:45:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:37,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:37,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:37,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:37,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:37,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:37,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:37,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:37,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 23:45:37,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:37,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-24 23:45:37,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-24 23:45:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 23:45:37,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:37,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:37,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 23:45:37,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:37,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 23:45:37,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 23:45:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:37,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 23:45:37,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:37,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:38,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:38,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 23:45:38,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:38,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 23:45:38,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:38,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 23:45:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:38,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 23:45:38,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:38,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:38,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:38,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:38,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:45:38,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:38,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 23:45:38,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:45:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 23:45:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:38,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:38,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:38,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:45:38,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 23:45:38,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:45:38,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:38,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:45:38,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:38,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:38,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:38,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:45:38,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 23:45:38,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:38,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:45:38,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:38,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:38,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:45:38,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:38,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 23:45:38,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:45:38,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:38,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:38,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:38,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:38,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:45:38,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-24 23:45:38,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504085527] [2020-09-24 23:45:38,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:38,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 23:45:38,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679658123] [2020-09-24 23:45:38,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 23:45:38,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:38,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 23:45:38,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-09-24 23:45:38,830 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 24 states. [2020-09-24 23:45:40,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:40,301 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2020-09-24 23:45:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 23:45:40,302 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 84 [2020-09-24 23:45:40,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:40,303 INFO L225 Difference]: With dead ends: 119 [2020-09-24 23:45:40,304 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 23:45:40,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=184, Invalid=2168, Unknown=0, NotChecked=0, Total=2352 [2020-09-24 23:45:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 23:45:40,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2020-09-24 23:45:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 23:45:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-24 23:45:40,309 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 84 [2020-09-24 23:45:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:40,310 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-24 23:45:40,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 23:45:40,310 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-24 23:45:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-24 23:45:40,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:40,311 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:40,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 23:45:40,311 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:40,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:40,312 INFO L82 PathProgramCache]: Analyzing trace with hash -901694575, now seen corresponding path program 4 times [2020-09-24 23:45:40,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:40,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053524878] [2020-09-24 23:45:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:40,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:41,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:41,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 23:45:41,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:41,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-09-24 23:45:41,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 23:45:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 23:45:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:41,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:41,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:41,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:41,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:41,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:41,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:41,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:41,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:42,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:42,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-24 23:45:42,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:42,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-09-24 23:45:42,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-24 23:45:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 23:45:42,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:42,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:42,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:42,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:42,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 23:45:42,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:42,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 23:45:42,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:42,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 23:45:42,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:42,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 23:45:42,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:42,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:42,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:42,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 23:45:42,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:42,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-24 23:45:42,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 23:45:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:45:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:42,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:42,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:42,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:42,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 23:45:42,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:42,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-24 23:45:42,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 23:45:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:42,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 23:45:42,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:43,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:43,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:43,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:45:43,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:43,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 23:45:43,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:43,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:45:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:45:43,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:43,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:43,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:45:43,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 23:45:43,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:45:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 23:45:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:43,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:43,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:45:43,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:43,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 23:45:43,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:43,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:43,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:43,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:45:43,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:43,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:45:43,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:45:43,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 23:45:43,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:43,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:43,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:43,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:45:43,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:43,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:43,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:43,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:43,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:45:43,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:45:43,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:43,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:43,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:43,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:45:43,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-09-24 23:45:43,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053524878] [2020-09-24 23:45:43,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:43,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-24 23:45:43,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925622659] [2020-09-24 23:45:43,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-24 23:45:43,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:43,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-24 23:45:43,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-09-24 23:45:43,960 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 26 states. [2020-09-24 23:45:45,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:45,622 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2020-09-24 23:45:45,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 23:45:45,622 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 92 [2020-09-24 23:45:45,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:45,624 INFO L225 Difference]: With dead ends: 124 [2020-09-24 23:45:45,624 INFO L226 Difference]: Without dead ends: 117 [2020-09-24 23:45:45,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=203, Invalid=2659, Unknown=0, NotChecked=0, Total=2862 [2020-09-24 23:45:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-24 23:45:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2020-09-24 23:45:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-24 23:45:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-24 23:45:45,637 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 92 [2020-09-24 23:45:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:45,637 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-24 23:45:45,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-24 23:45:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-24 23:45:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 23:45:45,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:45,641 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:45,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 23:45:45,641 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:45,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:45,642 INFO L82 PathProgramCache]: Analyzing trace with hash -751656891, now seen corresponding path program 4 times [2020-09-24 23:45:45,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:45,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465838371] [2020-09-24 23:45:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:46,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:46,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 23:45:46,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:46,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-09-24 23:45:46,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:46,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 23:45:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 23:45:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 23:45:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:47,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:45:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:47,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:47,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:47,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:45:47,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:47,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:45:47,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:45:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:45:47,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:47,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:45:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:47,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:47,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 23:45:47,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:47,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 23:45:47,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-24 23:45:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 23:45:47,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:47,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:47,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 23:45:47,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:47,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 23:45:47,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 23:45:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:47,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 23:45:47,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:47,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:47,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:47,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:47,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 23:45:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 23:45:47,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 23:45:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:47,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 23:45:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:47,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:47,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:47,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 23:45:47,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 23:45:47,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 23:45:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 23:45:47,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:47,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:47,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 23:45:48,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 23:45:48,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:45:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 23:45:48,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:48,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:45:48,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 23:45:48,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 23:45:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:45:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:48,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:45:48,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 23:45:48,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:45:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 23:45:48,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:45:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:45:48,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 23:45:48,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:45:48,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:45:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:48,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:45:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:48,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:45:48,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:45:48,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:45:48,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:45:48,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:45:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:45:48,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:45:48,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:45:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:45:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 23:45:48,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465838371] [2020-09-24 23:45:48,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:45:48,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 23:45:48,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901983802] [2020-09-24 23:45:48,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 23:45:48,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:45:48,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 23:45:48,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-09-24 23:45:48,688 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 25 states. [2020-09-24 23:45:50,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:45:50,401 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2020-09-24 23:45:50,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 23:45:50,402 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 93 [2020-09-24 23:45:50,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:45:50,403 INFO L225 Difference]: With dead ends: 129 [2020-09-24 23:45:50,403 INFO L226 Difference]: Without dead ends: 122 [2020-09-24 23:45:50,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=186, Invalid=2570, Unknown=0, NotChecked=0, Total=2756 [2020-09-24 23:45:50,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-24 23:45:50,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 80. [2020-09-24 23:45:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-24 23:45:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-24 23:45:50,410 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 93 [2020-09-24 23:45:50,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:45:50,410 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-24 23:45:50,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 23:45:50,411 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-24 23:45:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 23:45:50,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:45:50,412 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:45:50,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 23:45:50,412 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:45:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:45:50,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1968989964, now seen corresponding path program 4 times [2020-09-24 23:45:50,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:45:50,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223768967] [2020-09-24 23:45:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:45:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:45:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:45:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking...