/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:31:58,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:31:58,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:31:58,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:31:58,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:31:58,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:31:58,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:31:58,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:31:58,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:31:58,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:31:58,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:31:58,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:31:58,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:31:58,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:31:58,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:31:58,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:31:58,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:31:58,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:31:58,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:31:58,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:31:58,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:31:58,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:31:58,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:31:58,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:31:58,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:31:58,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:31:58,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:31:58,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:31:58,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:31:58,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:31:58,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:31:58,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:31:58,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:31:58,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:31:58,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:31:58,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:31:58,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:31:58,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:31:58,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:31:58,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:31:58,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:31:58,704 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 [2020-09-21 12:31:58,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:31:58,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:31:58,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:31:58,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:31:58,754 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:31:58,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:31:58,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:31:58,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:31:58,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:31:58,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:31:58,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:31:58,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:31:58,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:31:58,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:31:58,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:31:58,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:31:58,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:31:58,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:31:58,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:31:58,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:31:58,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:31:58,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:31:58,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:31:58,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:31:58,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:31:58,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:31:58,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:31:58,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:31:58,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:31:58,759 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:31:59,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:31:59,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:31:59,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:31:59,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:31:59,233 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:31:59,234 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-21 12:31:59,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1703e063d/97da9ec5590a48558214d762c5331faf/FLAG7098c555a [2020-09-21 12:32:00,024 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:32:00,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-21 12:32:00,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1703e063d/97da9ec5590a48558214d762c5331faf/FLAG7098c555a [2020-09-21 12:32:00,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1703e063d/97da9ec5590a48558214d762c5331faf [2020-09-21 12:32:00,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:32:00,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:32:00,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:00,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:32:00,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:32:00,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:00" (1/1) ... [2020-09-21 12:32:00,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:00, skipping insertion in model container [2020-09-21 12:32:00,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:00" (1/1) ... [2020-09-21 12:32:00,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:32:00,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:32:00,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:00,937 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:32:01,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:01,098 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:32:01,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:01 WrapperNode [2020-09-21 12:32:01,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:01,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:32:01,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:32:01,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:32:01,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:01" (1/1) ... [2020-09-21 12:32:01,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:01" (1/1) ... [2020-09-21 12:32:01,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:01" (1/1) ... [2020-09-21 12:32:01,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:01" (1/1) ... [2020-09-21 12:32:01,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:01" (1/1) ... [2020-09-21 12:32:01,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:01" (1/1) ... [2020-09-21 12:32:01,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:01" (1/1) ... [2020-09-21 12:32:01,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:32:01,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:32:01,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:32:01,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:32:01,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:01" (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 [2020-09-21 12:32:01,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:32:01,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:32:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:32:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:32:01,352 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:32:01,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:32:01,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:32:01,353 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:32:01,353 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:32:01,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:32:01,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:32:02,700 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:32:02,701 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:32:02,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:02 BoogieIcfgContainer [2020-09-21 12:32:02,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:32:02,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:32:02,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:32:02,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:32:02,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:32:00" (1/3) ... [2020-09-21 12:32:02,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212cb0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:02, skipping insertion in model container [2020-09-21 12:32:02,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:01" (2/3) ... [2020-09-21 12:32:02,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212cb0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:02, skipping insertion in model container [2020-09-21 12:32:02,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:02" (3/3) ... [2020-09-21 12:32:02,719 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-09-21 12:32:02,731 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:32:02,743 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:32:02,767 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:32:02,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:32:02,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:32:02,802 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:32:02,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:32:02,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:32:02,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:32:02,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:32:02,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:32:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-09-21 12:32:02,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:32:02,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:02,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:02,844 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1515832586, now seen corresponding path program 1 times [2020-09-21 12:32:02,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:02,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600226458] [2020-09-21 12:32:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:03,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:03,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 12:32:03,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:03,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-09-21 12:32:03,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 12:32:03,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:32:03,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:03,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:03,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:03,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:32:03,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:03,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:03,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:03,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600226458] [2020-09-21 12:32:03,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:03,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:32:03,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750556686] [2020-09-21 12:32:03,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:03,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:03,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:03,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:03,902 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 4 states. [2020-09-21 12:32:05,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:05,639 INFO L93 Difference]: Finished difference Result 581 states and 1007 transitions. [2020-09-21 12:32:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:05,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:32:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:05,674 INFO L225 Difference]: With dead ends: 581 [2020-09-21 12:32:05,674 INFO L226 Difference]: Without dead ends: 302 [2020-09-21 12:32:05,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-21 12:32:05,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 296. [2020-09-21 12:32:05,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-09-21 12:32:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 423 transitions. [2020-09-21 12:32:05,767 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 423 transitions. Word has length 47 [2020-09-21 12:32:05,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:05,768 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 423 transitions. [2020-09-21 12:32:05,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:05,768 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 423 transitions. [2020-09-21 12:32:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-21 12:32:05,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:05,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:05,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:32:05,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:05,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:05,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1094514294, now seen corresponding path program 1 times [2020-09-21 12:32:05,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:05,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014117601] [2020-09-21 12:32:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:05,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:06,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:06,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:06,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-21 12:32:06,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:06,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-21 12:32:06,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:06,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:06,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-21 12:32:06,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:32:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:06,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:06,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:06,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:06,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:06,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:32:06,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:07,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:07,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:07,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:32:07,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:07,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:32:07,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:07,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-21 12:32:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:32:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:07,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014117601] [2020-09-21 12:32:07,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:07,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:32:07,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199026189] [2020-09-21 12:32:07,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:32:07,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:07,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:32:07,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:07,207 INFO L87 Difference]: Start difference. First operand 296 states and 423 transitions. Second operand 6 states. [2020-09-21 12:32:09,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:09,173 INFO L93 Difference]: Finished difference Result 882 states and 1309 transitions. [2020-09-21 12:32:09,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:32:09,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-09-21 12:32:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:09,183 INFO L225 Difference]: With dead ends: 882 [2020-09-21 12:32:09,183 INFO L226 Difference]: Without dead ends: 592 [2020-09-21 12:32:09,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:32:09,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-09-21 12:32:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 588. [2020-09-21 12:32:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2020-09-21 12:32:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 829 transitions. [2020-09-21 12:32:09,265 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 829 transitions. Word has length 119 [2020-09-21 12:32:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:09,266 INFO L479 AbstractCegarLoop]: Abstraction has 588 states and 829 transitions. [2020-09-21 12:32:09,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:32:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 829 transitions. [2020-09-21 12:32:09,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-21 12:32:09,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:09,280 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:09,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:32:09,280 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:09,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:09,281 INFO L82 PathProgramCache]: Analyzing trace with hash -446355495, now seen corresponding path program 1 times [2020-09-21 12:32:09,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:09,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505476150] [2020-09-21 12:32:09,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:09,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:09,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:09,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-21 12:32:09,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:09,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-09-21 12:32:09,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:09,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-21 12:32:09,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:32:09,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:10,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:10,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:10,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:10,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:10,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:10,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:10,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:10,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:10,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:32:10,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-21 12:32:10,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:10,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:10,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-21 12:32:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:32:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:10,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505476150] [2020-09-21 12:32:10,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:10,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:10,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479615622] [2020-09-21 12:32:10,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:10,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:10,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:10,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:10,429 INFO L87 Difference]: Start difference. First operand 588 states and 829 transitions. Second operand 5 states. [2020-09-21 12:32:13,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:13,921 INFO L93 Difference]: Finished difference Result 1758 states and 2543 transitions. [2020-09-21 12:32:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:13,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-21 12:32:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:13,937 INFO L225 Difference]: With dead ends: 1758 [2020-09-21 12:32:13,937 INFO L226 Difference]: Without dead ends: 1176 [2020-09-21 12:32:13,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-09-21 12:32:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1025. [2020-09-21 12:32:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-09-21 12:32:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1369 transitions. [2020-09-21 12:32:13,990 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1369 transitions. Word has length 126 [2020-09-21 12:32:13,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:13,994 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 1369 transitions. [2020-09-21 12:32:13,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:13,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1369 transitions. [2020-09-21 12:32:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-21 12:32:14,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:14,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:14,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:32:14,007 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:14,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:14,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1926007174, now seen corresponding path program 1 times [2020-09-21 12:32:14,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:14,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117691372] [2020-09-21 12:32:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:15,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:15,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-21 12:32:15,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:32:15,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-21 12:32:15,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:32:15,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:15,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:15,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:15,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:15,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:15,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:15,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:15,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:15,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:15,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:15,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-21 12:32:15,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 12:32:15,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:32:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:15,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117691372] [2020-09-21 12:32:15,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:15,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:15,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345089548] [2020-09-21 12:32:15,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:15,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:15,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:15,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:15,313 INFO L87 Difference]: Start difference. First operand 1025 states and 1369 transitions. Second operand 5 states. [2020-09-21 12:32:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:16,563 INFO L93 Difference]: Finished difference Result 2067 states and 2785 transitions. [2020-09-21 12:32:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:16,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-21 12:32:16,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:16,572 INFO L225 Difference]: With dead ends: 2067 [2020-09-21 12:32:16,572 INFO L226 Difference]: Without dead ends: 1033 [2020-09-21 12:32:16,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-09-21 12:32:16,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1025. [2020-09-21 12:32:16,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-09-21 12:32:16,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1366 transitions. [2020-09-21 12:32:16,618 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1366 transitions. Word has length 137 [2020-09-21 12:32:16,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:16,619 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 1366 transitions. [2020-09-21 12:32:16,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:16,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1366 transitions. [2020-09-21 12:32:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-21 12:32:16,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:16,622 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:16,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:32:16,623 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:16,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:16,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1514289222, now seen corresponding path program 1 times [2020-09-21 12:32:16,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:16,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637382382] [2020-09-21 12:32:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:16,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:16,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:17,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:17,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-21 12:32:17,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:32:17,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-09-21 12:32:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:32:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:17,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:17,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:17,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:17,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:17,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:17,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:17,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:17,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:17,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:17,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 12:32:17,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:17,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 12:32:17,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-21 12:32:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:18,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637382382] [2020-09-21 12:32:18,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:18,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:18,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28362503] [2020-09-21 12:32:18,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:18,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:18,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:18,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:18,011 INFO L87 Difference]: Start difference. First operand 1025 states and 1366 transitions. Second operand 5 states. [2020-09-21 12:32:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:19,083 INFO L93 Difference]: Finished difference Result 2071 states and 2783 transitions. [2020-09-21 12:32:19,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:19,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-21 12:32:19,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:19,093 INFO L225 Difference]: With dead ends: 2071 [2020-09-21 12:32:19,094 INFO L226 Difference]: Without dead ends: 1033 [2020-09-21 12:32:19,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:19,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-09-21 12:32:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1025. [2020-09-21 12:32:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-09-21 12:32:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1363 transitions. [2020-09-21 12:32:19,133 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1363 transitions. Word has length 159 [2020-09-21 12:32:19,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:19,134 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 1363 transitions. [2020-09-21 12:32:19,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:19,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1363 transitions. [2020-09-21 12:32:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-21 12:32:19,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:19,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:19,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:32:19,140 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:19,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:19,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1897150203, now seen corresponding path program 1 times [2020-09-21 12:32:19,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:19,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82562791] [2020-09-21 12:32:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:19,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:19,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:20,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:20,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-21 12:32:20,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:20,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-09-21 12:32:20,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:20,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:20,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-21 12:32:20,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:32:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:20,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:20,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:20,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:20,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:20,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:32:20,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:20,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:20,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:20,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:20,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 12:32:20,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:20,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-21 12:32:20,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-21 12:32:20,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:20,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82562791] [2020-09-21 12:32:20,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:20,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:20,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244393319] [2020-09-21 12:32:20,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:20,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:20,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:20,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:20,774 INFO L87 Difference]: Start difference. First operand 1025 states and 1363 transitions. Second operand 5 states. [2020-09-21 12:32:21,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:21,831 INFO L93 Difference]: Finished difference Result 2074 states and 2783 transitions. [2020-09-21 12:32:21,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:21,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-21 12:32:21,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:21,837 INFO L225 Difference]: With dead ends: 2074 [2020-09-21 12:32:21,838 INFO L226 Difference]: Without dead ends: 1033 [2020-09-21 12:32:21,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-09-21 12:32:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1025. [2020-09-21 12:32:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-09-21 12:32:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1358 transitions. [2020-09-21 12:32:21,871 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1358 transitions. Word has length 164 [2020-09-21 12:32:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:21,872 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 1358 transitions. [2020-09-21 12:32:21,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1358 transitions. [2020-09-21 12:32:21,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-21 12:32:21,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:21,875 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:21,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:32:21,876 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:21,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:21,876 INFO L82 PathProgramCache]: Analyzing trace with hash -757427466, now seen corresponding path program 1 times [2020-09-21 12:32:21,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:21,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802993563] [2020-09-21 12:32:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:22,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:22,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-21 12:32:22,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-21 12:32:22,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-21 12:32:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:32:22,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:23,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:23,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:23,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:23,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:23,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:23,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:23,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:23,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:23,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:23,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:23,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-21 12:32:23,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:23,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-21 12:32:23,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-21 12:32:23,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:23,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802993563] [2020-09-21 12:32:23,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:23,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:23,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461743160] [2020-09-21 12:32:23,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:23,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:23,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:23,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:23,324 INFO L87 Difference]: Start difference. First operand 1025 states and 1358 transitions. Second operand 5 states. [2020-09-21 12:32:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:24,772 INFO L93 Difference]: Finished difference Result 2073 states and 2772 transitions. [2020-09-21 12:32:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:24,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-21 12:32:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:24,791 INFO L225 Difference]: With dead ends: 2073 [2020-09-21 12:32:24,792 INFO L226 Difference]: Without dead ends: 1033 [2020-09-21 12:32:24,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-09-21 12:32:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1025. [2020-09-21 12:32:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2020-09-21 12:32:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1353 transitions. [2020-09-21 12:32:24,863 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1353 transitions. Word has length 183 [2020-09-21 12:32:24,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:24,864 INFO L479 AbstractCegarLoop]: Abstraction has 1025 states and 1353 transitions. [2020-09-21 12:32:24,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:24,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1353 transitions. [2020-09-21 12:32:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-21 12:32:24,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:24,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:24,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:32:24,871 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1940687691, now seen corresponding path program 1 times [2020-09-21 12:32:24,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:24,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224909073] [2020-09-21 12:32:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:25,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:25,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:25,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-21 12:32:25,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-21 12:32:25,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-21 12:32:25,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:26,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:26,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:26,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:26,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:26,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:26,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:26,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:26,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:26,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:26,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:26,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:26,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:26,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:26,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-21 12:32:26,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:26,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-21 12:32:26,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:26,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-21 12:32:26,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:26,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224909073] [2020-09-21 12:32:26,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:26,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:32:26,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224038397] [2020-09-21 12:32:26,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:26,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:26,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:26,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:26,420 INFO L87 Difference]: Start difference. First operand 1025 states and 1353 transitions. Second operand 7 states. [2020-09-21 12:32:28,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:28,232 INFO L93 Difference]: Finished difference Result 2360 states and 3215 transitions. [2020-09-21 12:32:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:32:28,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-21 12:32:28,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:28,241 INFO L225 Difference]: With dead ends: 2360 [2020-09-21 12:32:28,241 INFO L226 Difference]: Without dead ends: 1341 [2020-09-21 12:32:28,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:28,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-09-21 12:32:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1331. [2020-09-21 12:32:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-09-21 12:32:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1698 transitions. [2020-09-21 12:32:28,279 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1698 transitions. Word has length 188 [2020-09-21 12:32:28,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:28,280 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1698 transitions. [2020-09-21 12:32:28,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1698 transitions. [2020-09-21 12:32:28,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-21 12:32:28,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:28,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:28,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:32:28,284 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:28,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:28,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2102240106, now seen corresponding path program 1 times [2020-09-21 12:32:28,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:28,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050068806] [2020-09-21 12:32:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:28,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:28,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:29,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:29,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-21 12:32:29,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:29,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:32:29,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-21 12:32:29,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:32:29,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:29,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:29,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:29,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:29,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:29,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:29,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:29,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:29,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:32:29,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:29,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-21 12:32:29,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:29,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:29,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-21 12:32:29,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:29,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-21 12:32:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:29,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:29,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:29,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:29,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-21 12:32:29,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-21 12:32:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:29,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050068806] [2020-09-21 12:32:29,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:29,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:29,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415161385] [2020-09-21 12:32:29,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:29,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:29,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:29,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:29,850 INFO L87 Difference]: Start difference. First operand 1331 states and 1698 transitions. Second operand 7 states. [2020-09-21 12:32:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:31,688 INFO L93 Difference]: Finished difference Result 2688 states and 3447 transitions. [2020-09-21 12:32:31,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:31,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-09-21 12:32:31,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:31,701 INFO L225 Difference]: With dead ends: 2688 [2020-09-21 12:32:31,702 INFO L226 Difference]: Without dead ends: 922 [2020-09-21 12:32:31,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:31,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2020-09-21 12:32:31,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 898. [2020-09-21 12:32:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-09-21 12:32:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 998 transitions. [2020-09-21 12:32:31,729 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 998 transitions. Word has length 199 [2020-09-21 12:32:31,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:31,729 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 998 transitions. [2020-09-21 12:32:31,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 998 transitions. [2020-09-21 12:32:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-21 12:32:31,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:31,735 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:31,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:32:31,735 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:31,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:31,736 INFO L82 PathProgramCache]: Analyzing trace with hash 740497305, now seen corresponding path program 1 times [2020-09-21 12:32:31,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:31,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417844535] [2020-09-21 12:32:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:31,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:32,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-21 12:32:32,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:32,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1036 [2020-09-21 12:32:32,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:32:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-21 12:32:32,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:32,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:32,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:32,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:32,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:32,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:32:32,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:32,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:32:32,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-21 12:32:32,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:33,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:32:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:33,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:33,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:33,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-21 12:32:33,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-21 12:32:33,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-21 12:32:33,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:33,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417844535] [2020-09-21 12:32:33,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:33,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:33,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412381634] [2020-09-21 12:32:33,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:33,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:33,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:33,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:33,513 INFO L87 Difference]: Start difference. First operand 898 states and 998 transitions. Second operand 7 states. [2020-09-21 12:32:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:35,127 INFO L93 Difference]: Finished difference Result 1820 states and 2044 transitions. [2020-09-21 12:32:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:35,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-09-21 12:32:35,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:35,133 INFO L225 Difference]: With dead ends: 1820 [2020-09-21 12:32:35,134 INFO L226 Difference]: Without dead ends: 928 [2020-09-21 12:32:35,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-09-21 12:32:35,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 896. [2020-09-21 12:32:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-09-21 12:32:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 971 transitions. [2020-09-21 12:32:35,160 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 971 transitions. Word has length 258 [2020-09-21 12:32:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:35,160 INFO L479 AbstractCegarLoop]: Abstraction has 896 states and 971 transitions. [2020-09-21 12:32:35,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 971 transitions. [2020-09-21 12:32:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-09-21 12:32:35,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:35,165 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:35,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:32:35,165 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:35,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:35,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2035949762, now seen corresponding path program 1 times [2020-09-21 12:32:35,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:35,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940084431] [2020-09-21 12:32:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:35,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:35,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-21 12:32:36,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:36,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-21 12:32:36,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:36,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-09-21 12:32:36,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:32:36,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:36,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:36,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:36,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:36,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:36,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:36,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:36,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:36,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:36,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:32:36,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:36,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:32:36,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:36,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:36,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:36,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:32:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-21 12:32:36,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:36,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-21 12:32:36,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:36,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-21 12:32:36,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-21 12:32:36,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940084431] [2020-09-21 12:32:36,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:36,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:36,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766044972] [2020-09-21 12:32:36,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:36,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:36,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:36,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:36,690 INFO L87 Difference]: Start difference. First operand 896 states and 971 transitions. Second operand 5 states. [2020-09-21 12:32:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:37,766 INFO L93 Difference]: Finished difference Result 1062 states and 1142 transitions. [2020-09-21 12:32:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:37,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-09-21 12:32:37,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:37,773 INFO L225 Difference]: With dead ends: 1062 [2020-09-21 12:32:37,774 INFO L226 Difference]: Without dead ends: 906 [2020-09-21 12:32:37,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-09-21 12:32:37,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 894. [2020-09-21 12:32:37,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-09-21 12:32:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 968 transitions. [2020-09-21 12:32:37,807 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 968 transitions. Word has length 259 [2020-09-21 12:32:37,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:37,807 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 968 transitions. [2020-09-21 12:32:37,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 968 transitions. [2020-09-21 12:32:37,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-21 12:32:37,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:37,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:37,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:32:37,813 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:37,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1698020394, now seen corresponding path program 1 times [2020-09-21 12:32:37,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:37,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087786671] [2020-09-21 12:32:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:38,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:38,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:38,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-09-21 12:32:38,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:38,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:32:38,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:38,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 269 [2020-09-21 12:32:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:32:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:38,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:38,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:38,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:38,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:38,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:38,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:38,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:38,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:39,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:32:39,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:39,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:32:39,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:39,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:39,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:39,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:39,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:32:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:39,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-21 12:32:39,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-21 12:32:39,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-21 12:32:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-21 12:32:39,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087786671] [2020-09-21 12:32:39,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:39,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:39,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950883237] [2020-09-21 12:32:39,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:39,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:39,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:39,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:39,286 INFO L87 Difference]: Start difference. First operand 894 states and 968 transitions. Second operand 5 states. [2020-09-21 12:32:40,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:40,682 INFO L93 Difference]: Finished difference Result 2088 states and 2274 transitions. [2020-09-21 12:32:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:40,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-09-21 12:32:40,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:40,690 INFO L225 Difference]: With dead ends: 2088 [2020-09-21 12:32:40,690 INFO L226 Difference]: Without dead ends: 1053 [2020-09-21 12:32:40,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:40,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2020-09-21 12:32:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1041. [2020-09-21 12:32:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-09-21 12:32:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1128 transitions. [2020-09-21 12:32:40,718 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1128 transitions. Word has length 303 [2020-09-21 12:32:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:40,718 INFO L479 AbstractCegarLoop]: Abstraction has 1041 states and 1128 transitions. [2020-09-21 12:32:40,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1128 transitions. [2020-09-21 12:32:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-09-21 12:32:40,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:40,724 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:40,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:32:40,725 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:40,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1642979938, now seen corresponding path program 1 times [2020-09-21 12:32:40,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:40,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993005096] [2020-09-21 12:32:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:41,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:41,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:41,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-09-21 12:32:41,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:41,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:32:41,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-09-21 12:32:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:32:41,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:41,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:41,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:41,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:41,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:41,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:41,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:41,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:41,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:41,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:32:41,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:41,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:32:41,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:41,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:32:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:42,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-21 12:32:42,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:32:42,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:42,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-21 12:32:42,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-21 12:32:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:42,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:42,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:42,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-21 12:32:42,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:42,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-21 12:32:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-21 12:32:42,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993005096] [2020-09-21 12:32:42,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:42,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:42,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542253008] [2020-09-21 12:32:42,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:42,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:42,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:42,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:42,459 INFO L87 Difference]: Start difference. First operand 1041 states and 1128 transitions. Second operand 7 states. [2020-09-21 12:32:44,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:44,353 INFO L93 Difference]: Finished difference Result 2396 states and 2626 transitions. [2020-09-21 12:32:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:32:44,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-09-21 12:32:44,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:44,359 INFO L225 Difference]: With dead ends: 2396 [2020-09-21 12:32:44,360 INFO L226 Difference]: Without dead ends: 1361 [2020-09-21 12:32:44,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-21 12:32:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1343. [2020-09-21 12:32:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1343 states. [2020-09-21 12:32:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1446 transitions. [2020-09-21 12:32:44,399 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1446 transitions. Word has length 307 [2020-09-21 12:32:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:44,400 INFO L479 AbstractCegarLoop]: Abstraction has 1343 states and 1446 transitions. [2020-09-21 12:32:44,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1446 transitions. [2020-09-21 12:32:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-09-21 12:32:44,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:44,410 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:44,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:32:44,410 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:44,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:44,411 INFO L82 PathProgramCache]: Analyzing trace with hash 2136446761, now seen corresponding path program 1 times [2020-09-21 12:32:44,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:44,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319919887] [2020-09-21 12:32:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-09-21 12:32:45,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:32:45,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 288 [2020-09-21 12:32:45,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:32:45,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:45,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:32:45,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:45,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 12:32:45,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:32:45,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:45,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:45,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:45,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:45,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:32:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-21 12:32:45,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:32:45,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:45,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:45,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-09-21 12:32:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:45,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-21 12:32:45,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:45,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 123 proven. 3 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-09-21 12:32:45,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319919887] [2020-09-21 12:32:45,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:45,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:45,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955410716] [2020-09-21 12:32:45,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:45,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:45,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:45,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:45,921 INFO L87 Difference]: Start difference. First operand 1343 states and 1446 transitions. Second operand 5 states. [2020-09-21 12:32:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:46,924 INFO L93 Difference]: Finished difference Result 1360 states and 1471 transitions. [2020-09-21 12:32:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:46,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-09-21 12:32:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:46,926 INFO L225 Difference]: With dead ends: 1360 [2020-09-21 12:32:46,926 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:32:46,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:46,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:32:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:32:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:32:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:32:46,930 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 320 [2020-09-21 12:32:46,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:46,931 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:32:46,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:32:46,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:32:46,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:32:46,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:32:47,891 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 119 [2020-09-21 12:32:48,413 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 119