/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=0.4 --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 13:21:26,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:21:26,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:21:26,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:21:26,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:21:26,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:21:26,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:21:26,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:21:26,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:21:26,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:21:26,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:21:26,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:21:26,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:21:26,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:21:26,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:21:26,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:21:26,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:21:26,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:21:26,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:21:26,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:21:26,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:21:26,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:21:26,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:21:26,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:21:26,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:21:26,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:21:26,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:21:26,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:21:26,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:21:26,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:21:26,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:21:26,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:21:26,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:21:26,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:21:26,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:21:26,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:21:26,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:21:26,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:21:26,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:21:26,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:21:26,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:21:26,546 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 13:21:26,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:21:26,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:21:26,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:21:26,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:21:26,577 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:21:26,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:21:26,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:21:26,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:21:26,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:21:26,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:21:26,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:21:26,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:21:26,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:21:26,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:21:26,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:21:26,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:21:26,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:21:26,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:21:26,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:21:26,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:21:26,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:21:26,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:21:26,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:21:26,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:21:26,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:21:26,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:21:26,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:21:26,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:21:26,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:21:26,584 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:21:27,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:21:27,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:21:27,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:21:27,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:21:27,112 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:21:27,113 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c [2020-09-25 13:21:27,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e214702/0ddf9dda44864e44bb7f0d5c26b814a3/FLAG476ef52b5 [2020-09-25 13:21:27,773 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:21:27,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci03.c [2020-09-25 13:21:27,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e214702/0ddf9dda44864e44bb7f0d5c26b814a3/FLAG476ef52b5 [2020-09-25 13:21:28,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58e214702/0ddf9dda44864e44bb7f0d5c26b814a3 [2020-09-25 13:21:28,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:21:28,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:21:28,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:28,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:21:28,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:21:28,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28, skipping insertion in model container [2020-09-25 13:21:28,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:21:28,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:21:28,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:28,430 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:21:28,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:28,476 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:21:28,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28 WrapperNode [2020-09-25 13:21:28,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:28,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:21:28,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:21:28,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:21:28,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:21:28,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:21:28,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:21:28,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:21:28,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28" (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 13:21:28,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:21:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:21:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 13:21:28,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:21:28,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:21:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:21:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 13:21:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:21:28,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:21:28,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:21:28,932 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:21:28,932 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:21:28,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:28 BoogieIcfgContainer [2020-09-25 13:21:28,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:21:28,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:21:28,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:21:28,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:21:28,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:21:28" (1/3) ... [2020-09-25 13:21:28,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183fb9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:28, skipping insertion in model container [2020-09-25 13:21:28,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28" (2/3) ... [2020-09-25 13:21:28,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183fb9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:28, skipping insertion in model container [2020-09-25 13:21:28,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:28" (3/3) ... [2020-09-25 13:21:28,948 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2020-09-25 13:21:28,960 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:21:28,971 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:21:28,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:21:29,024 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:21:29,024 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:21:29,024 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:21:29,024 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:21:29,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:21:29,025 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:21:29,025 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:21:29,025 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:21:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-25 13:21:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 13:21:29,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:29,056 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 13:21:29,056 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:29,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:29,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-25 13:21:29,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:29,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539850292] [2020-09-25 13:21:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:29,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 13:21:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 13:21:29,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:29,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:29,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:21:29,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:21:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:29,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:29,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:21:29,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:29,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:21:29,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:29,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:29,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:29,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 13:21:29,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:29,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:21:29,562 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 13:21:29,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539850292] [2020-09-25 13:21:29,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:29,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:21:29,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82794646] [2020-09-25 13:21:29,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:21:29,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:29,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:21:29,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:21:29,596 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-09-25 13:21:29,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:29,740 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 13:21:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:21:29,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 13:21:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:29,758 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:21:29,758 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 13:21:29,762 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 13:21:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 13:21:29,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 13:21:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 13:21:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 13:21:29,818 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-25 13:21:29,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:29,819 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 13:21:29,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:21:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 13:21:29,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 13:21:29,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:29,822 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 13:21:29,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:21:29,823 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:29,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:29,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-25 13:21:29,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:29,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433317849] [2020-09-25 13:21:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:29,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:21:29,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:29,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 13:21:29,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:29,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:29,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:21:29,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:21:29,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:29,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:29,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:29,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:29,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:29,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:30,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:21:30,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,028 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 13:21:30,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433317849] [2020-09-25 13:21:30,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:30,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:21:30,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064957512] [2020-09-25 13:21:30,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:21:30,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:30,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:21:30,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:21:30,033 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-09-25 13:21:30,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:30,129 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-25 13:21:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:21:30,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-25 13:21:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:30,132 INFO L225 Difference]: With dead ends: 39 [2020-09-25 13:21:30,132 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 13:21:30,134 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 13:21:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 13:21:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-25 13:21:30,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 13:21:30,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 13:21:30,143 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-25 13:21:30,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:30,144 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 13:21:30,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:21:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 13:21:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 13:21:30,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:30,147 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 13:21:30,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:21:30,147 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:30,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-25 13:21:30,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:30,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995313864] [2020-09-25 13:21:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:21:30,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-25 13:21:30,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:30,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:30,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:21:30,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:30,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:21:30,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:30,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:21:30,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:30,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 13:21:30,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:21:30,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:30,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:21:30,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:30,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:30,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:30,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:21:30,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:30,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:30,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,981 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 13:21:30,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995313864] [2020-09-25 13:21:30,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:30,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:21:30,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417268555] [2020-09-25 13:21:30,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:21:30,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:30,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:21:30,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:21:30,988 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-09-25 13:21:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:31,107 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-09-25 13:21:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:21:31,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-25 13:21:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:31,112 INFO L225 Difference]: With dead ends: 47 [2020-09-25 13:21:31,112 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 13:21:31,115 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 13:21:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 13:21:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-09-25 13:21:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 13:21:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-09-25 13:21:31,134 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 36 [2020-09-25 13:21:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:31,137 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-09-25 13:21:31,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:21:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-09-25 13:21:31,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 13:21:31,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:31,144 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 13:21:31,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:21:31,145 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-25 13:21:31,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:31,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097958645] [2020-09-25 13:21:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 13:21:31,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:31,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-09-25 13:21:31,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:21:31,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:31,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:31,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:31,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:31,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:31,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:31,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:31,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:31,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 13:21:31,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:32,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:32,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:21:32,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:32,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:32,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:21:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:32,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:32,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:21:32,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:32,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 13:21:32,105 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 13:21:32,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097958645] [2020-09-25 13:21:32,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:32,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:21:32,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364562927] [2020-09-25 13:21:32,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:21:32,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:32,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:21:32,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:21:32,110 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 6 states. [2020-09-25 13:21:32,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:32,243 INFO L93 Difference]: Finished difference Result 95 states and 141 transitions. [2020-09-25 13:21:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:21:32,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-25 13:21:32,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:32,247 INFO L225 Difference]: With dead ends: 95 [2020-09-25 13:21:32,247 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 13:21:32,249 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 13:21:32,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 13:21:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-25 13:21:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 13:21:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 84 transitions. [2020-09-25 13:21:32,264 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 84 transitions. Word has length 37 [2020-09-25 13:21:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:32,265 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 84 transitions. [2020-09-25 13:21:32,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:21:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 84 transitions. [2020-09-25 13:21:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:21:32,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:32,270 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 13:21:32,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:21:32,270 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:32,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1288436502, now seen corresponding path program 2 times [2020-09-25 13:21:32,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:32,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746753980] [2020-09-25 13:21:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:36,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 13:21:36,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:21:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3744 [2020-09-25 13:21:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:36,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:21:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:36,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:36,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:36,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:36,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:36,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:36,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:36,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:21:37,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:21:37,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1585 [2020-09-25 13:21:37,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:21:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:37,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:37,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 13:21:37,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:21:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:37,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:37,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:37,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:37,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:21:37,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:37,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:37,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:37,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:21:37,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:21:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:37,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:37,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:37,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:21:37,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:37,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:37,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:37,835 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 13:21:37,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746753980] [2020-09-25 13:21:37,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:37,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:21:37,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013960535] [2020-09-25 13:21:37,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:21:37,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:37,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:21:37,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:21:37,839 INFO L87 Difference]: Start difference. First operand 61 states and 84 transitions. Second operand 6 states. [2020-09-25 13:21:37,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:37,935 INFO L93 Difference]: Finished difference Result 133 states and 196 transitions. [2020-09-25 13:21:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:21:37,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-25 13:21:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:37,945 INFO L225 Difference]: With dead ends: 133 [2020-09-25 13:21:37,945 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 13:21:37,951 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 13:21:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 13:21:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-09-25 13:21:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 13:21:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2020-09-25 13:21:37,966 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 53 [2020-09-25 13:21:37,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:37,966 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2020-09-25 13:21:37,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:21:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2020-09-25 13:21:37,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 13:21:37,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:37,969 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 13:21:37,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:21:37,970 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:37,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:37,970 INFO L82 PathProgramCache]: Analyzing trace with hash -494889179, now seen corresponding path program 2 times [2020-09-25 13:21:37,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:37,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829707845] [2020-09-25 13:21:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:42,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 13:21:42,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:21:42,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4335 [2020-09-25 13:21:42,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:42,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:42,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:42,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:42,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 13:21:42,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:42,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:42,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:42,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:42,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:42,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:42,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:42,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:42,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:42,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:44,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:21:45,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:21:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3339 [2020-09-25 13:21:45,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:21:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:45,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:45,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 13:21:45,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:21:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:45,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:45,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:45,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:45,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:45,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:45,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:45,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:45,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:45,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:45,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:45,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:45,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:45,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:21:45,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:45,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:45,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:45,881 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 13:21:45,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829707845] [2020-09-25 13:21:45,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:45,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:21:45,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768622956] [2020-09-25 13:21:45,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:21:45,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:45,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:21:45,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:21:45,888 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand 6 states. [2020-09-25 13:21:46,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:46,027 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2020-09-25 13:21:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:21:46,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-25 13:21:46,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:46,029 INFO L225 Difference]: With dead ends: 77 [2020-09-25 13:21:46,029 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 13:21:46,030 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 13:21:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 13:21:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2020-09-25 13:21:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 13:21:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2020-09-25 13:21:46,054 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 54 [2020-09-25 13:21:46,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:46,055 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2020-09-25 13:21:46,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:21:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2020-09-25 13:21:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 13:21:46,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:46,068 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 13:21:46,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:21:46,069 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:46,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:46,069 INFO L82 PathProgramCache]: Analyzing trace with hash -339463207, now seen corresponding path program 3 times [2020-09-25 13:21:46,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:46,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20222933] [2020-09-25 13:21:46,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:51,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 13:21:51,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:21:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:21:51,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:51,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:21:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:21:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:51,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:51,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:51,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:51,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:51,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:51,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:51,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:51,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:56,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 13:21:56,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:21:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:21:56,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:56,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:21:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:21:56,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:56,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:56,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:56,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 13:21:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:56,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:56,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:21:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:56,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:56,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:56,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:56,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:21:56,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:56,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:56,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:56,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:56,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:56,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:56,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:56,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:21:56,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:56,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:56,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:56,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:58,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:21:58,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:21:58,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2438 [2020-09-25 13:21:58,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:58,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:58,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:58,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:21:58,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:21:58,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:58,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:58,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:58,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:58,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 13:21:58,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:58,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:58,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:21:58,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:58,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:59,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:59,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:21:59,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:59,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:59,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:59,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:21:59,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:59,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:59,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:59,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:21:59,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:59,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 54 proven. 69 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 13:21:59,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20222933] [2020-09-25 13:21:59,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:59,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:21:59,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023897490] [2020-09-25 13:21:59,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:21:59,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:59,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:21:59,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:21:59,064 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand 9 states. [2020-09-25 13:21:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:59,323 INFO L93 Difference]: Finished difference Result 104 states and 139 transitions. [2020-09-25 13:21:59,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:21:59,324 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-09-25 13:21:59,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:59,325 INFO L225 Difference]: With dead ends: 104 [2020-09-25 13:21:59,325 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 13:21:59,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:21:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 13:21:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-09-25 13:21:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 13:21:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-09-25 13:21:59,333 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 88 [2020-09-25 13:21:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:59,334 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-09-25 13:21:59,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:21:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-09-25 13:21:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 13:21:59,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:59,337 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 13:21:59,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:21:59,337 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:59,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:59,338 INFO L82 PathProgramCache]: Analyzing trace with hash -778718797, now seen corresponding path program 4 times [2020-09-25 13:21:59,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:59,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509994005] [2020-09-25 13:21:59,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:04,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 13:22:04,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:22:04,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:22:04,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:04,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:22:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:22:04,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:04,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:04,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:04,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:04,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:04,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:04,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:04,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:04,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:04,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:04,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:09,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 13:22:09,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:22:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:22:09,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:09,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:22:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:09,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:09,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:09,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:09,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 13:22:09,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:09,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:22:09,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:09,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:09,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:09,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:09,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:09,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:22:09,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:09,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:09,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:09,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:09,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:09,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:22:09,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:09,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:09,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:09,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:22:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:22:12,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:22:12,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2508 [2020-09-25 13:22:12,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:22:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:12,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:12,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:22:12,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:12,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:12,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:12,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:12,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:12,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:12,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:12,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:12,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:22:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:12,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:22:12,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 61 proven. 64 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-25 13:22:12,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509994005] [2020-09-25 13:22:12,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:12,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:22:12,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868273083] [2020-09-25 13:22:12,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:22:12,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:12,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:22:12,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:12,350 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states. [2020-09-25 13:22:12,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:12,673 INFO L93 Difference]: Finished difference Result 99 states and 129 transitions. [2020-09-25 13:22:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:22:12,674 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-09-25 13:22:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:12,676 INFO L225 Difference]: With dead ends: 99 [2020-09-25 13:22:12,676 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:22:12,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:22:12,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:22:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 13:22:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:22:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 13:22:12,685 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 90 [2020-09-25 13:22:12,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:12,686 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 13:22:12,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:22:12,686 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 13:22:12,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 13:22:12,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:12,688 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 13:22:12,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:22:12,689 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:12,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:12,689 INFO L82 PathProgramCache]: Analyzing trace with hash 237402259, now seen corresponding path program 5 times [2020-09-25 13:22:12,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:12,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763403341] [2020-09-25 13:22:12,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 13:22:17,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:22:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:22:17,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:17,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:22:17,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 13:22:17,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:17,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:17,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:17,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:20,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:20,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:20,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking...