/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:24:23,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:24:23,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:24:23,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:24:23,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:24:23,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:24:23,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:24:23,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:24:23,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:24:23,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:24:23,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:24:23,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:24:23,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:24:23,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:24:23,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:24:23,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:24:23,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:24:23,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:24:23,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:24:23,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:24:23,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:24:23,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:24:23,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:24:23,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:24:23,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:24:23,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:24:23,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:24:23,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:24:23,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:24:23,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:24:23,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:24:23,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:24:23,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:24:23,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:24:23,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:24:23,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:24:23,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:24:23,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:24:23,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:24:23,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:24:23,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:24:23,462 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 18:24:23,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:24:23,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:24:23,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:24:23,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:24:23,489 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:24:23,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:24:23,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:24:23,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:24:23,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:24:23,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:24:23,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:24:23,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:24:23,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:24:23,491 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:24:23,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:24:23,491 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:24:23,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:24:23,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:24:23,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:24:23,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:24:23,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:24:23,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:24:23,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:24:23,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:24:23,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:24:23,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:24:23,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:24:23,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:24:23,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:24:23,494 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:24:23,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:24:23,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:24:23,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:24:23,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:24:23,983 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:24:23,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-24 18:24:24,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9acfa13a0/3b804cc3b8d141fcb5e1671289e62045/FLAG1577df662 [2020-09-24 18:24:24,695 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:24:24,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-24 18:24:24,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9acfa13a0/3b804cc3b8d141fcb5e1671289e62045/FLAG1577df662 [2020-09-24 18:24:24,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9acfa13a0/3b804cc3b8d141fcb5e1671289e62045 [2020-09-24 18:24:24,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:24:24,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:24:24,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:24,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:24:24,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:24:24,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:24" (1/1) ... [2020-09-24 18:24:25,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4667a720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:24, skipping insertion in model container [2020-09-24 18:24:25,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:24" (1/1) ... [2020-09-24 18:24:25,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:24:25,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:24:25,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:25,697 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:24:25,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:25,837 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:24:25,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25 WrapperNode [2020-09-24 18:24:25,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:25,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:24:25,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:24:25,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:24:25,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ... [2020-09-24 18:24:25,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ... [2020-09-24 18:24:25,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ... [2020-09-24 18:24:25,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ... [2020-09-24 18:24:25,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ... [2020-09-24 18:24:25,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ... [2020-09-24 18:24:25,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (1/1) ... [2020-09-24 18:24:25,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:24:25,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:24:25,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:24:25,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:24:25,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (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 18:24:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:24:26,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:24:26,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:24:26,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:24:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:24:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:24:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:24:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:24:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:24:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:24:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:24:27,423 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:24:27,423 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:24:27,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:27 BoogieIcfgContainer [2020-09-24 18:24:27,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:24:27,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:24:27,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:24:27,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:24:27,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:24" (1/3) ... [2020-09-24 18:24:27,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7f0900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:27, skipping insertion in model container [2020-09-24 18:24:27,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:25" (2/3) ... [2020-09-24 18:24:27,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7f0900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:27, skipping insertion in model container [2020-09-24 18:24:27,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:27" (3/3) ... [2020-09-24 18:24:27,441 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label15.c [2020-09-24 18:24:27,452 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:24:27,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:24:27,486 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:24:27,519 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:24:27,519 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:24:27,519 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:24:27,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:24:27,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:24:27,520 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:24:27,520 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:24:27,520 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:24:27,550 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:24:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 18:24:27,558 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:27,560 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 18:24:27,560 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:27,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1814812065, now seen corresponding path program 1 times [2020-09-24 18:24:27,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:27,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853044983] [2020-09-24 18:24:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:28,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:28,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:28,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 18:24:28,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:24:28,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-24 18:24:28,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:24:28,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 18:24:28,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:24:28,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:28,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:28,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:28,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:28,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:28,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:24:28,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:28,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:24:28,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:28,323 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 18:24:28,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853044983] [2020-09-24 18:24:28,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:28,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:24:28,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588798204] [2020-09-24 18:24:28,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:24:28,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:28,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:24:28,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:24:28,355 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:24:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:30,308 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 18:24:30,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:24:30,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-24 18:24:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:30,332 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 18:24:30,333 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 18:24:30,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 18:24:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 18:24:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 18:24:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 18:24:30,436 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 29 [2020-09-24 18:24:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:30,437 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 18:24:30,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:24:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 18:24:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-24 18:24:30,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:30,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:30,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:24:30,444 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:30,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:30,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1743569131, now seen corresponding path program 1 times [2020-09-24 18:24:30,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:30,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929791885] [2020-09-24 18:24:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:30,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:31,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 18:24:32,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:32,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1877 [2020-09-24 18:24:32,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:32,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:24:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:24:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:32,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:32,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:32,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:32,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:32,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:24:32,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:32,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 18:24:32,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:32,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:24:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:32,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929791885] [2020-09-24 18:24:32,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:32,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:24:32,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567933261] [2020-09-24 18:24:32,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:24:32,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:32,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:24:32,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:32,661 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-24 18:24:35,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:35,026 INFO L93 Difference]: Finished difference Result 1701 states and 2260 transitions. [2020-09-24 18:24:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:24:35,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-09-24 18:24:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:35,035 INFO L225 Difference]: With dead ends: 1701 [2020-09-24 18:24:35,035 INFO L226 Difference]: Without dead ends: 1173 [2020-09-24 18:24:35,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:24:35,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-09-24 18:24:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1151. [2020-09-24 18:24:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-09-24 18:24:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1479 transitions. [2020-09-24 18:24:35,099 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1479 transitions. Word has length 109 [2020-09-24 18:24:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:35,100 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1479 transitions. [2020-09-24 18:24:35,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:24:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1479 transitions. [2020-09-24 18:24:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-24 18:24:35,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:35,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:35,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:24:35,120 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:35,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1939346792, now seen corresponding path program 1 times [2020-09-24 18:24:35,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:35,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157215359] [2020-09-24 18:24:35,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:35,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:37,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:40,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-24 18:24:40,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:24:40,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:24:40,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:40,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-09-24 18:24:40,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:24:40,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:40,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:40,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:40,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:40,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:40,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:40,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:40,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:40,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:40,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:40,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 18:24:40,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:40,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 18:24:40,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 18:24:40,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:40,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157215359] [2020-09-24 18:24:40,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:40,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:40,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123692742] [2020-09-24 18:24:40,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:40,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:40,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:40,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:40,694 INFO L87 Difference]: Start difference. First operand 1151 states and 1479 transitions. Second operand 5 states. [2020-09-24 18:24:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:42,414 INFO L93 Difference]: Finished difference Result 2755 states and 3643 transitions. [2020-09-24 18:24:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:42,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-24 18:24:42,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:42,424 INFO L225 Difference]: With dead ends: 2755 [2020-09-24 18:24:42,425 INFO L226 Difference]: Without dead ends: 1129 [2020-09-24 18:24:42,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-09-24 18:24:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1117. [2020-09-24 18:24:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2020-09-24 18:24:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1403 transitions. [2020-09-24 18:24:42,477 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1403 transitions. Word has length 180 [2020-09-24 18:24:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:42,478 INFO L479 AbstractCegarLoop]: Abstraction has 1117 states and 1403 transitions. [2020-09-24 18:24:42,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1403 transitions. [2020-09-24 18:24:42,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 18:24:42,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:42,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:42,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:24:42,490 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:42,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:42,491 INFO L82 PathProgramCache]: Analyzing trace with hash 369135611, now seen corresponding path program 1 times [2020-09-24 18:24:42,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:42,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218765206] [2020-09-24 18:24:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:42,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:43,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:44,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:44,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:46,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:46,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 18:24:46,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:46,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3665 [2020-09-24 18:24:46,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:46,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:46,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:24:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:24:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:46,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:46,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:46,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:46,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:46,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:46,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:46,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:46,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:46,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:46,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:46,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:24:46,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 18:24:46,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:24:46,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:46,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 18:24:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:46,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:46,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:24:46,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-24 18:24:46,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:46,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:24:46,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:46,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218765206] [2020-09-24 18:24:46,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:46,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:46,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147524386] [2020-09-24 18:24:46,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:46,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:46,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:46,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:46,816 INFO L87 Difference]: Start difference. First operand 1117 states and 1403 transitions. Second operand 7 states. [2020-09-24 18:24:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:49,194 INFO L93 Difference]: Finished difference Result 3007 states and 4006 transitions. [2020-09-24 18:24:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:24:49,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-09-24 18:24:49,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:49,212 INFO L225 Difference]: With dead ends: 3007 [2020-09-24 18:24:49,212 INFO L226 Difference]: Without dead ends: 1905 [2020-09-24 18:24:49,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:24:49,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2020-09-24 18:24:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1748. [2020-09-24 18:24:49,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2020-09-24 18:24:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2174 transitions. [2020-09-24 18:24:49,297 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2174 transitions. Word has length 244 [2020-09-24 18:24:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:49,297 INFO L479 AbstractCegarLoop]: Abstraction has 1748 states and 2174 transitions. [2020-09-24 18:24:49,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2174 transitions. [2020-09-24 18:24:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-24 18:24:49,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:49,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:49,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:49,305 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:49,306 INFO L82 PathProgramCache]: Analyzing trace with hash -335524442, now seen corresponding path program 1 times [2020-09-24 18:24:49,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:49,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662413083] [2020-09-24 18:24:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:54,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:54,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-09-24 18:24:54,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:54,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:24:54,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-24 18:24:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:24:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:54,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:54,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:54,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:54,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:54,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:24:54,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:54,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:54,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:54,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:54,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 18:24:54,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 18:24:54,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 18:24:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:54,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-24 18:24:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:54,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:54,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:24:54,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:54,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-24 18:24:54,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:54,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:54,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:24:54,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:24:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:55,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662413083] [2020-09-24 18:24:55,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:55,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:24:55,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199520339] [2020-09-24 18:24:55,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:24:55,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:55,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:24:55,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:55,226 INFO L87 Difference]: Start difference. First operand 1748 states and 2174 transitions. Second operand 7 states. [2020-09-24 18:24:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:57,153 INFO L93 Difference]: Finished difference Result 4001 states and 5020 transitions. [2020-09-24 18:24:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:24:57,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-09-24 18:24:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:57,166 INFO L225 Difference]: With dead ends: 4001 [2020-09-24 18:24:57,166 INFO L226 Difference]: Without dead ends: 2268 [2020-09-24 18:24:57,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:24:57,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2020-09-24 18:24:57,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2230. [2020-09-24 18:24:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2230 states. [2020-09-24 18:24:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 2744 transitions. [2020-09-24 18:24:57,238 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 2744 transitions. Word has length 255 [2020-09-24 18:24:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:57,239 INFO L479 AbstractCegarLoop]: Abstraction has 2230 states and 2744 transitions. [2020-09-24 18:24:57,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:24:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 2744 transitions. [2020-09-24 18:24:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-24 18:24:57,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:57,250 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:24:57,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:57,251 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:57,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2072260567, now seen corresponding path program 1 times [2020-09-24 18:24:57,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:57,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440794120] [2020-09-24 18:24:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:57,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:59,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:02,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-09-24 18:25:02,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:25:02,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5208 [2020-09-24 18:25:02,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:25:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 18:25:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:02,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:02,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:02,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:25:02,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:02,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:02,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:02,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:02,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:25:02,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 18:25:02,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:02,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:25:02,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:02,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:25:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:02,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:02,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:25:02,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:02,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 18:25:02,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 18:25:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:02,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-24 18:25:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:03,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:03,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:25:03,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 18:25:03,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 18:25:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:03,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 122 proven. 84 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-24 18:25:03,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440794120] [2020-09-24 18:25:03,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:03,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:25:03,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374609906] [2020-09-24 18:25:03,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:03,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:03,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:03,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:03,219 INFO L87 Difference]: Start difference. First operand 2230 states and 2744 transitions. Second operand 7 states. [2020-09-24 18:25:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:05,208 INFO L93 Difference]: Finished difference Result 4471 states and 5513 transitions. [2020-09-24 18:25:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:25:05,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-09-24 18:25:05,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:05,220 INFO L225 Difference]: With dead ends: 4471 [2020-09-24 18:25:05,220 INFO L226 Difference]: Without dead ends: 2256 [2020-09-24 18:25:05,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:25:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2020-09-24 18:25:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2078. [2020-09-24 18:25:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2078 states. [2020-09-24 18:25:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2357 transitions. [2020-09-24 18:25:05,287 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2357 transitions. Word has length 337 [2020-09-24 18:25:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:05,288 INFO L479 AbstractCegarLoop]: Abstraction has 2078 states and 2357 transitions. [2020-09-24 18:25:05,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:25:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2357 transitions. [2020-09-24 18:25:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-09-24 18:25:05,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:05,299 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:05,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:25:05,300 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:05,301 INFO L82 PathProgramCache]: Analyzing trace with hash -644191716, now seen corresponding path program 1 times [2020-09-24 18:25:05,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:05,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849067707] [2020-09-24 18:25:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:05,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:05,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:05,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:10,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-09-24 18:25:10,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:25:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-24 18:25:10,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-09-24 18:25:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 18:25:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:10,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:10,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:10,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:10,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:10,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:10,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:10,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:10,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:10,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:10,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:10,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:10,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 18:25:10,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:25:10,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:10,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:10,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 18:25:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:10,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:25:10,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:10,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 18:25:10,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 18:25:10,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:10,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-09-24 18:25:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:10,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:10,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 18:25:10,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:10,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-24 18:25:10,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:10,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 18:25:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-24 18:25:11,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849067707] [2020-09-24 18:25:11,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:11,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:25:11,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623527605] [2020-09-24 18:25:11,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:11,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:11,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:11,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:11,127 INFO L87 Difference]: Start difference. First operand 2078 states and 2357 transitions. Second operand 7 states.