/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:06:00,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:06:00,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:06:00,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:06:00,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:06:00,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:06:00,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:06:00,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:06:00,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:06:00,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:06:00,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:06:00,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:06:00,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:06:00,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:06:00,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:06:00,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:06:00,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:06:00,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:06:00,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:06:00,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:06:00,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:06:00,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:06:00,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:06:00,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:06:00,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:06:00,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:06:00,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:06:00,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:06:00,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:06:00,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:06:00,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:06:00,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:06:00,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:06:00,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:06:00,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:06:00,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:06:00,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:06:00,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:06:00,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:06:00,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:06:00,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:06:00,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:06:00,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:06:00,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:06:00,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:06:00,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:06:00,530 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:06:00,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:06:00,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:06:00,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:06:00,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:06:00,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:06:00,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:06:00,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:06:00,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:06:00,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:06:00,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:06:00,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:06:00,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:06:00,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:06:00,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:06:00,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:06:00,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:06:00,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:06:00,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:06:00,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:06:00,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:06:00,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:06:00,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:06:00,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:06:00,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:06:00,537 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:06:01,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:06:01,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:06:01,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:06:01,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:06:01,071 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:06:01,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c [2020-09-25 11:06:01,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b09bca6db/78f8e7693dc8429b813be5cd48e03f41/FLAG14c7906d8 [2020-09-25 11:06:01,725 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:06:01,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci03.c [2020-09-25 11:06:01,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b09bca6db/78f8e7693dc8429b813be5cd48e03f41/FLAG14c7906d8 [2020-09-25 11:06:02,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b09bca6db/78f8e7693dc8429b813be5cd48e03f41 [2020-09-25 11:06:02,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:06:02,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:06:02,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:02,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:06:02,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:06:02,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:02" (1/1) ... [2020-09-25 11:06:02,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02, skipping insertion in model container [2020-09-25 11:06:02,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:06:02" (1/1) ... [2020-09-25 11:06:02,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:06:02,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:06:02,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:02,401 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:06:02,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:06:02,435 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:06:02,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02 WrapperNode [2020-09-25 11:06:02,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:06:02,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:06:02,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:06:02,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:06:02,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02" (1/1) ... [2020-09-25 11:06:02,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02" (1/1) ... [2020-09-25 11:06:02,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02" (1/1) ... [2020-09-25 11:06:02,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02" (1/1) ... [2020-09-25 11:06:02,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02" (1/1) ... [2020-09-25 11:06:02,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02" (1/1) ... [2020-09-25 11:06:02,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02" (1/1) ... [2020-09-25 11:06:02,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:06:02,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:06:02,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:06:02,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:06:02,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:06:02,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:06:02,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:06:02,655 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 11:06:02,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:06:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:06:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:06:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 11:06:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:06:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:06:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:06:02,868 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:06:02,869 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:06:02,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:02 BoogieIcfgContainer [2020-09-25 11:06:02,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:06:02,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:06:02,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:06:02,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:06:02,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:06:02" (1/3) ... [2020-09-25 11:06:02,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7d7009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:02, skipping insertion in model container [2020-09-25 11:06:02,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:06:02" (2/3) ... [2020-09-25 11:06:02,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7d7009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:06:02, skipping insertion in model container [2020-09-25 11:06:02,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:06:02" (3/3) ... [2020-09-25 11:06:02,885 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2020-09-25 11:06:02,898 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:06:02,908 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:06:02,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:06:03,015 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:06:03,015 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:06:03,016 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:06:03,016 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:06:03,016 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:06:03,017 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:06:03,017 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:06:03,017 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:06:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-25 11:06:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 11:06:03,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:03,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:03,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:03,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:03,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-25 11:06:03,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:03,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911075163] [2020-09-25 11:06:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:03,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 11:06:03,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:03,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 11:06:03,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:03,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:06:03,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:06:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:03,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:03,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:03,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:03,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:03,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:03,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:03,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:06:03,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:03,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:03,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:03,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:06:03,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911075163] [2020-09-25 11:06:03,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:03,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:06:03,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501731023] [2020-09-25 11:06:03,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:03,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:03,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:03,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:03,554 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-09-25 11:06:03,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:03,691 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 11:06:03,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:06:03,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 11:06:03,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:03,708 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:06:03,708 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 11:06:03,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:06:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 11:06:03,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 11:06:03,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 11:06:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 11:06:03,776 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-25 11:06:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:03,776 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 11:06:03,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 11:06:03,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 11:06:03,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:03,779 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] [2020-09-25 11:06:03,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:06:03,780 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:03,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:03,781 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-25 11:06:03,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:03,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525038635] [2020-09-25 11:06:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:03,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 11:06:03,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 11:06:03,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:03,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:06:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:03,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:03,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:03,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:03,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:03,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:03,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:03,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:03,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 11:06:03,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:03,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:06:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:06:04,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525038635] [2020-09-25 11:06:04,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:06:04,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:06:04,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498884543] [2020-09-25 11:06:04,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:06:04,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:04,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:06:04,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:06:04,005 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-09-25 11:06:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:04,089 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-25 11:06:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:06:04,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-25 11:06:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:04,092 INFO L225 Difference]: With dead ends: 39 [2020-09-25 11:06:04,092 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 11:06:04,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:06:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 11:06:04,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-25 11:06:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 11:06:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 11:06:04,103 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-25 11:06:04,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:04,103 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 11:06:04,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:06:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 11:06:04,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 11:06:04,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:04,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 11:06:04,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:06:04,106 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:04,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-25 11:06:04,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:04,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376050422] [2020-09-25 11:06:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:04,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:06:04,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:04,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-09-25 11:06:04,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:04,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:04,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 11:06:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:04,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:04,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:04,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:04,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:04,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:04,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:04,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:04,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:04,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:04,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:04,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:04,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:04,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 11:06:04,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:04,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:06:04,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:04,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:04,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:04,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:04,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:04,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:06:04,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:04,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:04,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:04,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:04,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:04,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:04,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:04,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:06:04,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:04,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:04,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:04,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 11:06:04,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376050422] [2020-09-25 11:06:04,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:04,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:06:04,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504531318] [2020-09-25 11:06:04,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:06:04,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:04,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:06:04,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:06:04,806 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-09-25 11:06:04,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:04,911 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-09-25 11:06:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:06:04,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 11:06:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:04,914 INFO L225 Difference]: With dead ends: 47 [2020-09-25 11:06:04,914 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 11:06:04,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:06:04,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 11:06:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-09-25 11:06:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 11:06:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-09-25 11:06:04,926 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 36 [2020-09-25 11:06:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:04,927 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-09-25 11:06:04,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:06:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-09-25 11:06:04,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 11:06:04,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:04,929 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 11:06:04,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:06:04,930 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:04,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:04,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-25 11:06:04,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:04,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997404871] [2020-09-25 11:06:04,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 11:06:05,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:05,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-25 11:06:05,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:05,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:06:05,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:05,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:05,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:05,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:06:05,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 11:06:05,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:06:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:05,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:05,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:06:05,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:05,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:05,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:05,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:06:05,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:05,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:05,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:05,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:05,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 11:06:05,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997404871] [2020-09-25 11:06:05,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:05,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:06:05,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8814515] [2020-09-25 11:06:05,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:06:05,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:05,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:06:05,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:06:05,734 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 6 states. [2020-09-25 11:06:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:05,856 INFO L93 Difference]: Finished difference Result 95 states and 141 transitions. [2020-09-25 11:06:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:06:05,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-25 11:06:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:05,860 INFO L225 Difference]: With dead ends: 95 [2020-09-25 11:06:05,860 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 11:06:05,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:06:05,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 11:06:05,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-25 11:06:05,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 11:06:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 84 transitions. [2020-09-25 11:06:05,884 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 84 transitions. Word has length 37 [2020-09-25 11:06:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:05,887 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 84 transitions. [2020-09-25 11:06:05,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:06:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 84 transitions. [2020-09-25 11:06:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 11:06:05,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:05,895 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2020-09-25 11:06:05,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:06:05,896 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:05,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1288436502, now seen corresponding path program 2 times [2020-09-25 11:06:05,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:05,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607510294] [2020-09-25 11:06:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:05,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:06,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:09,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:09,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 11:06:09,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:06:09,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3827 [2020-09-25 11:06:09,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:09,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 11:06:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:09,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:09,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:09,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:09,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:09,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:09,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:09,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:09,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:09,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:09,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:09,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:10,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:11,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:06:11,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:06:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1493 [2020-09-25 11:06:11,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:11,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:11,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:06:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:11,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:11,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:11,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:11,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:11,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 11:06:11,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:11,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:11,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:06:11,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:11,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:11,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:11,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:11,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:06:11,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:11,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:11,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:11,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:11,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:06:11,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:11,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:11,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:06:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:11,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:11,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:11,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:06:11,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:11,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:11,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 11:06:11,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607510294] [2020-09-25 11:06:11,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:11,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:06:11,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192748070] [2020-09-25 11:06:11,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:06:11,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:11,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:06:11,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:06:11,466 INFO L87 Difference]: Start difference. First operand 61 states and 84 transitions. Second operand 6 states. [2020-09-25 11:06:11,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:11,555 INFO L93 Difference]: Finished difference Result 133 states and 196 transitions. [2020-09-25 11:06:11,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:06:11,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-25 11:06:11,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:11,559 INFO L225 Difference]: With dead ends: 133 [2020-09-25 11:06:11,559 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 11:06:11,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:06:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 11:06:11,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-09-25 11:06:11,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 11:06:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2020-09-25 11:06:11,576 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 53 [2020-09-25 11:06:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:11,576 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2020-09-25 11:06:11,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:06:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2020-09-25 11:06:11,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 11:06:11,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:11,579 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-25 11:06:11,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:06:11,579 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:11,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:11,580 INFO L82 PathProgramCache]: Analyzing trace with hash -494889179, now seen corresponding path program 2 times [2020-09-25 11:06:11,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:11,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393618815] [2020-09-25 11:06:11,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:11,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:11,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:12,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:15,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:15,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 11:06:15,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:06:15,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4314 [2020-09-25 11:06:15,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:15,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:15,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 11:06:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 11:06:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:15,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:15,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:15,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:15,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:15,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:15,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:15,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:15,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:15,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:15,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:15,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:16,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:16,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:17,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:19,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:06:19,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:06:19,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3493 [2020-09-25 11:06:19,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:19,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:19,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:06:19,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:06:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:19,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:19,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:19,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 11:06:19,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:19,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:06:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:19,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:19,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:19,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:19,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:06:19,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:19,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:19,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:19,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:19,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:19,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:19,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:19,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:19,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:19,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:19,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:19,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:19,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:19,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:06:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:19,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:06:19,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:19,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:19,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:19,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:19,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 11:06:19,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393618815] [2020-09-25 11:06:19,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:19,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:06:19,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726381321] [2020-09-25 11:06:19,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:06:19,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:19,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:06:19,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:06:19,646 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand 6 states. [2020-09-25 11:06:19,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:19,842 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2020-09-25 11:06:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:06:19,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-25 11:06:19,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:19,848 INFO L225 Difference]: With dead ends: 77 [2020-09-25 11:06:19,848 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 11:06:19,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:06:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 11:06:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2020-09-25 11:06:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 11:06:19,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2020-09-25 11:06:19,874 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 54 [2020-09-25 11:06:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:19,874 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2020-09-25 11:06:19,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:06:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2020-09-25 11:06:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 11:06:19,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:19,879 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 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] [2020-09-25 11:06:19,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:06:19,879 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:19,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:19,880 INFO L82 PathProgramCache]: Analyzing trace with hash -339463207, now seen corresponding path program 3 times [2020-09-25 11:06:19,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:19,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921437666] [2020-09-25 11:06:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:19,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:19,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:23,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 11:06:24,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:06:24,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 11:06:24,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:06:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:06:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:06:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:24,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:24,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:24,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:24,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:24,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:24,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:24,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:26,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:29,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 11:06:29,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:06:29,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:06:29,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:29,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:29,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:06:29,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:06:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:06:29,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:29,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:29,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:29,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:30,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:30,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 11:06:30,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:06:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:30,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:30,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:30,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:06:30,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:30,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:06:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:30,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:30,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:30,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:30,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:06:30,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:30,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:06:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:30,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:30,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:32,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:32,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:06:32,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:06:32,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2789 [2020-09-25 11:06:32,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:32,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:32,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:06:32,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:33,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:33,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:33,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:06:33,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:06:33,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:33,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:06:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:33,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:33,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:33,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:33,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:06:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:33,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:33,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:33,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:06:33,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:33,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:33,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:33,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:06:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:33,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:33,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:06:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:33,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:06:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 58 proven. 65 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 11:06:33,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921437666] [2020-09-25 11:06:33,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:33,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:06:33,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446677245] [2020-09-25 11:06:33,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:06:33,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:33,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:06:33,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:06:33,184 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand 9 states. [2020-09-25 11:06:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:33,563 INFO L93 Difference]: Finished difference Result 131 states and 192 transitions. [2020-09-25 11:06:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:06:33,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-09-25 11:06:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:33,565 INFO L225 Difference]: With dead ends: 131 [2020-09-25 11:06:33,565 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:06:33,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:06:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:06:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:06:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:06:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 11:06:33,576 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 88 [2020-09-25 11:06:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:33,576 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 11:06:33,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:06:33,577 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 11:06:33,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 11:06:33,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:33,580 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:33,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:06:33,581 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:33,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:33,581 INFO L82 PathProgramCache]: Analyzing trace with hash 237402259, now seen corresponding path program 4 times [2020-09-25 11:06:33,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:33,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604074159] [2020-09-25 11:06:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:33,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:38,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 11:06:38,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:06:38,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:06:38,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:38,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:06:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:06:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 11:06:38,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:38,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:06:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:38,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:38,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:06:38,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:38,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:38,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:38,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:06:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:38,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:39,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:43,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 11:06:43,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:06:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:06:43,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:43,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:06:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:06:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 11:06:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:43,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:06:45,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:06:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-09-25 11:06:45,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 11:06:45,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:45,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:45,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:06:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:06:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:06:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:45,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:45,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:45,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:45,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:45,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:45,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:45,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:45,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:06:45,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:45,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:45,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:06:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:45,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:45,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:06:45,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:45,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:45,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:06:45,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:06:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:45,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:45,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:46,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:47,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:47,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 11:06:50,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 11:06:50,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:06:50,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:06:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:06:50,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 11:06:50,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 11:06:50,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:06:50,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:06:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:06:50,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:06:50,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:06:50,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:50,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:06:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:50,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:50,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:06:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:06:50,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:06:50,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:06:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:50,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:06:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:06:50,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:06:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:06:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:06:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:06:50,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:06:50,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:06:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:06:50,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:06:50,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:06:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:06:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:06:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:06:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:06:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 155 proven. 107 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-09-25 11:06:50,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604074159] [2020-09-25 11:06:50,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:06:50,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:06:50,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166541644] [2020-09-25 11:06:50,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:06:50,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:06:50,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:06:50,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:06:50,584 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 10 states. [2020-09-25 11:06:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:06:50,899 INFO L93 Difference]: Finished difference Result 120 states and 168 transitions. [2020-09-25 11:06:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:06:50,900 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2020-09-25 11:06:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:06:50,902 INFO L225 Difference]: With dead ends: 120 [2020-09-25 11:06:50,903 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 11:06:50,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:06:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 11:06:50,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-09-25 11:06:50,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 11:06:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2020-09-25 11:06:50,912 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 126 [2020-09-25 11:06:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:06:50,913 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2020-09-25 11:06:50,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:06:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2020-09-25 11:06:50,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 11:06:50,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:06:50,915 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:06:50,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:06:50,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:06:50,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:06:50,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1698410615, now seen corresponding path program 5 times [2020-09-25 11:06:50,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:06:50,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539066731] [2020-09-25 11:06:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:06:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:06:50,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:50,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:51,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:06:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking...