/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:12:06,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:12:06,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:12:06,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:12:06,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:12:06,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:12:06,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:12:06,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:12:06,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:12:06,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:12:06,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:12:06,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:12:06,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:12:06,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:12:06,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:12:06,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:12:06,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:12:06,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:12:06,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:12:06,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:12:06,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:12:06,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:12:06,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:12:06,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:12:06,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:12:06,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:12:06,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:12:06,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:12:06,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:12:06,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:12:06,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:12:06,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:12:06,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:12:06,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:12:06,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:12:06,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:12:06,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:12:06,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:12:06,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:12:06,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:12:06,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:12:06,518 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 [2020-10-12 14:12:06,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:12:06,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:12:06,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:12:06,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:12:06,560 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:12:06,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:12:06,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:12:06,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:12:06,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:12:06,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:12:06,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:12:06,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:12:06,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:12:06,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:12:06,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:12:06,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:12:06,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:12:06,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:12:06,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:12:06,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:12:06,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:12:06,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:12:06,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:12:06,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:12:06,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:12:06,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:12:06,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:12:06,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:12:06,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:12:06,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:12:06,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:12:06,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:12:06,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:12:06,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:12:06,926 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:12:06,927 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26.c [2020-10-12 14:12:06,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b96d05ac/09d611264cb74530a64bf6ebb2361247/FLAG5593473cf [2020-10-12 14:12:07,802 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:12:07,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label26.c [2020-10-12 14:12:07,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b96d05ac/09d611264cb74530a64bf6ebb2361247/FLAG5593473cf [2020-10-12 14:12:08,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b96d05ac/09d611264cb74530a64bf6ebb2361247 [2020-10-12 14:12:08,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:12:08,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:12:08,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:12:08,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:12:08,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:12:08,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:12:08" (1/1) ... [2020-10-12 14:12:08,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:08, skipping insertion in model container [2020-10-12 14:12:08,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:12:08" (1/1) ... [2020-10-12 14:12:08,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:12:08,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:12:09,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:12:09,364 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:12:09,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:12:09,683 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:12:09,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:09 WrapperNode [2020-10-12 14:12:09,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:12:09,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:12:09,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:12:09,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:12:09,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:09" (1/1) ... [2020-10-12 14:12:09,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:09" (1/1) ... [2020-10-12 14:12:09,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:09" (1/1) ... [2020-10-12 14:12:09,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:09" (1/1) ... [2020-10-12 14:12:09,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:09" (1/1) ... [2020-10-12 14:12:09,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:09" (1/1) ... [2020-10-12 14:12:09,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:09" (1/1) ... [2020-10-12 14:12:09,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:12:09,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:12:09,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:12:09,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:12:09,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:09" (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 [2020-10-12 14:12:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:12:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:12:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:12:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:12:10,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:12:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:12:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:12:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:12:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:12:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:12:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:12:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:12:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:12:16,732 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:12:16,732 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:12:16,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:12:16 BoogieIcfgContainer [2020-10-12 14:12:16,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:12:16,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:12:16,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:12:16,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:12:16,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:12:08" (1/3) ... [2020-10-12 14:12:16,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9c55bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:12:16, skipping insertion in model container [2020-10-12 14:12:16,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:12:09" (2/3) ... [2020-10-12 14:12:16,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9c55bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:12:16, skipping insertion in model container [2020-10-12 14:12:16,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:12:16" (3/3) ... [2020-10-12 14:12:16,757 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label26.c [2020-10-12 14:12:16,769 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:12:16,778 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:12:16,793 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:12:16,824 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:12:16,825 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:12:16,825 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:12:16,825 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:12:16,825 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:12:16,825 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:12:16,826 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:12:16,826 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:12:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:12:16,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 14:12:16,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:12:16,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:12:16,867 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:12:16,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:12:16,874 INFO L82 PathProgramCache]: Analyzing trace with hash -35790891, now seen corresponding path program 1 times [2020-10-12 14:12:16,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:12:16,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645089751] [2020-10-12 14:12:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:12:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:17,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:17,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 14:12:17,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:17,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-12 14:12:17,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:12:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:12:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 14:12:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:12:17,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:12:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:17,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:17,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:12:17,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:17,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:12:17,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:17,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:12:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:12:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:12:17,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645089751] [2020-10-12 14:12:17,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:12:17,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 14:12:17,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084059540] [2020-10-12 14:12:17,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:12:17,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:17,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:12:17,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:12:17,796 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2020-10-12 14:12:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:12:27,282 INFO L93 Difference]: Finished difference Result 1517 states and 2786 transitions. [2020-10-12 14:12:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:12:27,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-12 14:12:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:12:27,317 INFO L225 Difference]: With dead ends: 1517 [2020-10-12 14:12:27,318 INFO L226 Difference]: Without dead ends: 1010 [2020-10-12 14:12:27,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:12:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-12 14:12:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1000. [2020-10-12 14:12:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-12 14:12:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1378 transitions. [2020-10-12 14:12:27,459 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1378 transitions. Word has length 59 [2020-10-12 14:12:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:12:27,460 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1378 transitions. [2020-10-12 14:12:27,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:12:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1378 transitions. [2020-10-12 14:12:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 14:12:27,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:12:27,466 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, 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] [2020-10-12 14:12:27,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:12:27,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:12:27,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:12:27,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1287315378, now seen corresponding path program 1 times [2020-10-12 14:12:27,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:12:27,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445818844] [2020-10-12 14:12:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:12:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:27,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:30,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:30,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 14:12:30,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:12:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2526 [2020-10-12 14:12:30,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:30,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:12:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 14:12:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 14:12:30,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:12:30,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:12:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:30,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:30,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:12:30,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:30,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:12:30,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:12:30,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:12:30,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:12:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:30,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:30,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:12:30,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 14:12:30,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:12:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:30,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 14:12:30,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:12:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:12:30,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445818844] [2020-10-12 14:12:30,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:12:30,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:12:30,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747869109] [2020-10-12 14:12:30,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:12:30,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:30,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:12:30,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:12:30,713 INFO L87 Difference]: Start difference. First operand 1000 states and 1378 transitions. Second operand 8 states. [2020-10-12 14:12:37,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:12:37,251 INFO L93 Difference]: Finished difference Result 1818 states and 2541 transitions. [2020-10-12 14:12:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:12:37,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-10-12 14:12:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:12:37,274 INFO L225 Difference]: With dead ends: 1818 [2020-10-12 14:12:37,274 INFO L226 Difference]: Without dead ends: 1006 [2020-10-12 14:12:37,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:12:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2020-10-12 14:12:37,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1000. [2020-10-12 14:12:37,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-12 14:12:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1270 transitions. [2020-10-12 14:12:37,355 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1270 transitions. Word has length 128 [2020-10-12 14:12:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:12:37,359 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1270 transitions. [2020-10-12 14:12:37,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:12:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1270 transitions. [2020-10-12 14:12:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 14:12:37,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:12:37,372 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, 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] [2020-10-12 14:12:37,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:12:37,373 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:12:37,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:12:37,374 INFO L82 PathProgramCache]: Analyzing trace with hash -933741655, now seen corresponding path program 1 times [2020-10-12 14:12:37,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:12:37,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470954173] [2020-10-12 14:12:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:12:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:37,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:39,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:39,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 14:12:39,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:12:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1576 [2020-10-12 14:12:39,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:12:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:12:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 14:12:39,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:39,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:12:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:39,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:39,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:12:39,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:39,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 14:12:39,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:12:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:12:39,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:12:39,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:12:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:39,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:39,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:12:39,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:39,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 14:12:39,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:12:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:12:39,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:12:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:12:39,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470954173] [2020-10-12 14:12:39,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:12:39,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:12:39,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333808540] [2020-10-12 14:12:39,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:12:39,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:39,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:12:39,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:12:39,681 INFO L87 Difference]: Start difference. First operand 1000 states and 1270 transitions. Second operand 7 states. [2020-10-12 14:12:48,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:12:48,846 INFO L93 Difference]: Finished difference Result 2328 states and 2907 transitions. [2020-10-12 14:12:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:12:48,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-12 14:12:48,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:12:48,854 INFO L225 Difference]: With dead ends: 2328 [2020-10-12 14:12:48,854 INFO L226 Difference]: Without dead ends: 1334 [2020-10-12 14:12:48,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:12:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-10-12 14:12:48,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1321. [2020-10-12 14:12:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-10-12 14:12:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1598 transitions. [2020-10-12 14:12:48,895 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1598 transitions. Word has length 139 [2020-10-12 14:12:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:12:48,896 INFO L479 AbstractCegarLoop]: Abstraction has 1321 states and 1598 transitions. [2020-10-12 14:12:48,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:12:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1598 transitions. [2020-10-12 14:12:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-12 14:12:48,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:12:48,901 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:12:48,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:12:48,901 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:12:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:12:48,902 INFO L82 PathProgramCache]: Analyzing trace with hash 586609153, now seen corresponding path program 1 times [2020-10-12 14:12:48,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:12:48,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166389223] [2020-10-12 14:12:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:12:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:49,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:50,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:51,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:51,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-12 14:12:51,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:12:51,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2050 [2020-10-12 14:12:51,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:12:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:12:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-12 14:12:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:51,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:12:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:51,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:51,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:12:51,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:51,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:12:51,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:51,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:12:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:12:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:12:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:51,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:12:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:12:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:12:51,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:12:51,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 14:12:51,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:12:51,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-12 14:12:51,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:12:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:12:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:12:51,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-12 14:12:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:12:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:12:52,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166389223] [2020-10-12 14:12:52,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:12:52,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:12:52,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434999474] [2020-10-12 14:12:52,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:12:52,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:12:52,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:12:52,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:12:52,178 INFO L87 Difference]: Start difference. First operand 1321 states and 1598 transitions. Second operand 8 states. [2020-10-12 14:13:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:13:02,546 INFO L93 Difference]: Finished difference Result 2413 states and 3137 transitions. [2020-10-12 14:13:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:13:02,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 296 [2020-10-12 14:13:02,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:13:02,557 INFO L225 Difference]: With dead ends: 2413 [2020-10-12 14:13:02,557 INFO L226 Difference]: Without dead ends: 1675 [2020-10-12 14:13:02,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:13:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2020-10-12 14:13:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1645. [2020-10-12 14:13:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1645 states. [2020-10-12 14:13:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2102 transitions. [2020-10-12 14:13:02,645 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2102 transitions. Word has length 296 [2020-10-12 14:13:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:13:02,647 INFO L479 AbstractCegarLoop]: Abstraction has 1645 states and 2102 transitions. [2020-10-12 14:13:02,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:13:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2102 transitions. [2020-10-12 14:13:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-12 14:13:02,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:13:02,654 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:13:02,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:13:02,655 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:13:02,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:13:02,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1224688853, now seen corresponding path program 1 times [2020-10-12 14:13:02,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:13:02,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645649468] [2020-10-12 14:13:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:13:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:02,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:03,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:05,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:05,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-12 14:13:05,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:13:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2410 [2020-10-12 14:13:05,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-12 14:13:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 14:13:05,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:05,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:13:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:05,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:05,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:13:05,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:13:05,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:05,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:13:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:13:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:05,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:05,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:05,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:13:05,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-12 14:13:05,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:05,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:05,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:13:05,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:13:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:06,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:06,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:13:06,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:06,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 14:13:06,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:13:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:06,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:13:06,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:13:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 14:13:06,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645649468] [2020-10-12 14:13:06,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:13:06,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:13:06,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161129339] [2020-10-12 14:13:06,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:13:06,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:13:06,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:13:06,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:13:06,470 INFO L87 Difference]: Start difference. First operand 1645 states and 2102 transitions. Second operand 5 states. [2020-10-12 14:13:16,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:13:16,790 INFO L93 Difference]: Finished difference Result 4232 states and 5607 transitions. [2020-10-12 14:13:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:13:16,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 413 [2020-10-12 14:13:16,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:13:16,808 INFO L225 Difference]: With dead ends: 4232 [2020-10-12 14:13:16,808 INFO L226 Difference]: Without dead ends: 2900 [2020-10-12 14:13:16,813 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 [2020-10-12 14:13:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2020-10-12 14:13:16,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 2894. [2020-10-12 14:13:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2894 states. [2020-10-12 14:13:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 3462 transitions. [2020-10-12 14:13:16,902 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 3462 transitions. Word has length 413 [2020-10-12 14:13:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:13:16,904 INFO L479 AbstractCegarLoop]: Abstraction has 2894 states and 3462 transitions. [2020-10-12 14:13:16,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:13:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 3462 transitions. [2020-10-12 14:13:16,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-12 14:13:16,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:13:16,914 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:13:16,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:13:16,915 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:13:16,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:13:16,915 INFO L82 PathProgramCache]: Analyzing trace with hash 2021108461, now seen corresponding path program 1 times [2020-10-12 14:13:16,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:13:16,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424074942] [2020-10-12 14:13:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:13:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:17,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:19,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-12 14:13:19,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:13:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1998 [2020-10-12 14:13:19,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 371 [2020-10-12 14:13:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 14:13:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:19,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:13:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:19,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:19,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:19,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:13:19,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:19,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:13:19,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:19,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:19,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:13:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:19,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:19,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:13:19,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 14:13:19,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:19,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:19,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:13:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:19,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:19,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 14:13:19,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 14:13:19,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:13:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:13:19,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-12 14:13:19,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424074942] [2020-10-12 14:13:19,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:13:19,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:13:19,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297417665] [2020-10-12 14:13:19,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:13:19,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:13:19,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:13:19,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:13:19,754 INFO L87 Difference]: Start difference. First operand 2894 states and 3462 transitions. Second operand 5 states. [2020-10-12 14:13:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:13:27,384 INFO L93 Difference]: Finished difference Result 5860 states and 7436 transitions. [2020-10-12 14:13:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:13:27,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 418 [2020-10-12 14:13:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:13:27,408 INFO L225 Difference]: With dead ends: 5860 [2020-10-12 14:13:27,408 INFO L226 Difference]: Without dead ends: 3899 [2020-10-12 14:13:27,415 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 [2020-10-12 14:13:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2020-10-12 14:13:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3578. [2020-10-12 14:13:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3578 states. [2020-10-12 14:13:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 4377 transitions. [2020-10-12 14:13:27,519 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 4377 transitions. Word has length 418 [2020-10-12 14:13:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:13:27,521 INFO L479 AbstractCegarLoop]: Abstraction has 3578 states and 4377 transitions. [2020-10-12 14:13:27,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:13:27,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 4377 transitions. [2020-10-12 14:13:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-12 14:13:27,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:13:27,530 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:13:27,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:13:27,530 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:13:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:13:27,531 INFO L82 PathProgramCache]: Analyzing trace with hash -63148319, now seen corresponding path program 1 times [2020-10-12 14:13:27,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:13:27,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743907995] [2020-10-12 14:13:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:13:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:29,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:29,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:29,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-12 14:13:29,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:13:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2195 [2020-10-12 14:13:29,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:13:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:13:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:29,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:13:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:29,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:29,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:29,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:13:29,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:29,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:13:29,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:29,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:29,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:29,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:29,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:29,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:13:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:30,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:30,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:13:30,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:30,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 14:13:30,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:13:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:13:30,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:13:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:30,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:30,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:30,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:13:30,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:13:30,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-12 14:13:30,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:13:30,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:13:30,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:13:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:13:31,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743907995] [2020-10-12 14:13:31,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:13:31,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:13:31,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934225691] [2020-10-12 14:13:31,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:13:31,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:13:31,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:13:31,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:13:31,006 INFO L87 Difference]: Start difference. First operand 3578 states and 4377 transitions. Second operand 7 states. [2020-10-12 14:13:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:13:42,989 INFO L93 Difference]: Finished difference Result 9738 states and 12306 transitions. [2020-10-12 14:13:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:13:42,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-12 14:13:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:13:43,029 INFO L225 Difference]: With dead ends: 9738 [2020-10-12 14:13:43,030 INFO L226 Difference]: Without dead ends: 6473 [2020-10-12 14:13:43,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:13:43,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6473 states. [2020-10-12 14:13:43,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6473 to 6419. [2020-10-12 14:13:43,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6419 states. [2020-10-12 14:13:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6419 states to 6419 states and 8040 transitions. [2020-10-12 14:13:43,297 INFO L78 Accepts]: Start accepts. Automaton has 6419 states and 8040 transitions. Word has length 419 [2020-10-12 14:13:43,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:13:43,298 INFO L479 AbstractCegarLoop]: Abstraction has 6419 states and 8040 transitions. [2020-10-12 14:13:43,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:13:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6419 states and 8040 transitions. [2020-10-12 14:13:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-12 14:13:43,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:13:43,313 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:13:43,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:13:43,313 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:13:43,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:13:43,314 INFO L82 PathProgramCache]: Analyzing trace with hash 370580767, now seen corresponding path program 1 times [2020-10-12 14:13:43,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:13:43,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747543051] [2020-10-12 14:13:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:13:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:43,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:45,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:45,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-12 14:13:45,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:13:45,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1974 [2020-10-12 14:13:45,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:45,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:45,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 371 [2020-10-12 14:13:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 14:13:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:45,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:13:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:45,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:45,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:45,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:13:45,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:13:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:45,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:13:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:45,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:45,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:45,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:13:45,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:45,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 14:13:45,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:45,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:45,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:13:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:45,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:45,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:13:45,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 14:13:45,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:13:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:13:45,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 14:13:45,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747543051] [2020-10-12 14:13:45,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:13:45,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:13:45,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140742382] [2020-10-12 14:13:45,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:13:45,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:13:45,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:13:45,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:13:45,965 INFO L87 Difference]: Start difference. First operand 6419 states and 8040 transitions. Second operand 5 states. [2020-10-12 14:13:56,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:13:56,142 INFO L93 Difference]: Finished difference Result 15048 states and 19292 transitions. [2020-10-12 14:13:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:13:56,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 419 [2020-10-12 14:13:56,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:13:56,201 INFO L225 Difference]: With dead ends: 15048 [2020-10-12 14:13:56,202 INFO L226 Difference]: Without dead ends: 8942 [2020-10-12 14:13:56,218 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 [2020-10-12 14:13:56,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8942 states. [2020-10-12 14:13:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8942 to 7976. [2020-10-12 14:13:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7976 states. [2020-10-12 14:13:56,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 10338 transitions. [2020-10-12 14:13:56,504 INFO L78 Accepts]: Start accepts. Automaton has 7976 states and 10338 transitions. Word has length 419 [2020-10-12 14:13:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:13:56,505 INFO L479 AbstractCegarLoop]: Abstraction has 7976 states and 10338 transitions. [2020-10-12 14:13:56,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:13:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 7976 states and 10338 transitions. [2020-10-12 14:13:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-12 14:13:56,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:13:56,511 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:13:56,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:13:56,512 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:13:56,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:13:56,512 INFO L82 PathProgramCache]: Analyzing trace with hash -862804105, now seen corresponding path program 1 times [2020-10-12 14:13:56,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:13:56,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984610380] [2020-10-12 14:13:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:13:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:57,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:58,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:58,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-12 14:13:58,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:13:58,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1721 [2020-10-12 14:13:58,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:13:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 385 [2020-10-12 14:13:58,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 14:13:58,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:58,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:13:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:58,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:58,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:13:58,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:58,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:13:58,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:58,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:58,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:58,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:13:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:58,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:58,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:58,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:13:58,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:13:58,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:13:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:13:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:13:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:13:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:13:58,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:13:58,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 14:13:58,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:13:58,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:13:58,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:13:58,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:13:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:13:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 14:13:58,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:13:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-12 14:13:58,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984610380] [2020-10-12 14:13:58,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:13:58,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:13:58,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567889251] [2020-10-12 14:13:58,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:13:58,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:13:58,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:13:58,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:13:58,887 INFO L87 Difference]: Start difference. First operand 7976 states and 10338 transitions. Second operand 5 states. [2020-10-12 14:14:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:14:05,586 INFO L93 Difference]: Finished difference Result 17213 states and 23274 transitions. [2020-10-12 14:14:05,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:14:05,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 432 [2020-10-12 14:14:05,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:14:05,642 INFO L225 Difference]: With dead ends: 17213 [2020-10-12 14:14:05,642 INFO L226 Difference]: Without dead ends: 10483 [2020-10-12 14:14:05,662 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 [2020-10-12 14:14:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10483 states. [2020-10-12 14:14:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10483 to 10164. [2020-10-12 14:14:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10164 states. [2020-10-12 14:14:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10164 states to 10164 states and 13517 transitions. [2020-10-12 14:14:06,020 INFO L78 Accepts]: Start accepts. Automaton has 10164 states and 13517 transitions. Word has length 432 [2020-10-12 14:14:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:14:06,021 INFO L479 AbstractCegarLoop]: Abstraction has 10164 states and 13517 transitions. [2020-10-12 14:14:06,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:14:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand 10164 states and 13517 transitions. [2020-10-12 14:14:06,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-12 14:14:06,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:14:06,031 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:14:06,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:14:06,032 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:14:06,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:14:06,033 INFO L82 PathProgramCache]: Analyzing trace with hash 434129528, now seen corresponding path program 1 times [2020-10-12 14:14:06,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:14:06,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392291979] [2020-10-12 14:14:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:14:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:06,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:07,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:07,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-12 14:14:07,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:14:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1547 [2020-10-12 14:14:07,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:14:07,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 396 [2020-10-12 14:14:07,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 14:14:07,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:08,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:14:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:08,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:08,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:08,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:14:08,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:08,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:14:08,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:08,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:08,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:14:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:08,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:08,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:14:08,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 14:14:08,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:08,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:08,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:14:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:08,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:08,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:14:08,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:08,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:14:08,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:14:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 14:14:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-12 14:14:08,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392291979] [2020-10-12 14:14:08,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:14:08,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:14:08,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052294452] [2020-10-12 14:14:08,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:14:08,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:14:08,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:14:08,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:14:08,470 INFO L87 Difference]: Start difference. First operand 10164 states and 13517 transitions. Second operand 6 states. [2020-10-12 14:14:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:14:22,380 INFO L93 Difference]: Finished difference Result 29666 states and 42615 transitions. [2020-10-12 14:14:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:14:22,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 443 [2020-10-12 14:14:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:14:22,478 INFO L225 Difference]: With dead ends: 29666 [2020-10-12 14:14:22,478 INFO L226 Difference]: Without dead ends: 19815 [2020-10-12 14:14:22,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:14:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19815 states. [2020-10-12 14:14:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19815 to 18569. [2020-10-12 14:14:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18569 states. [2020-10-12 14:14:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18569 states to 18569 states and 25596 transitions. [2020-10-12 14:14:23,209 INFO L78 Accepts]: Start accepts. Automaton has 18569 states and 25596 transitions. Word has length 443 [2020-10-12 14:14:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:14:23,210 INFO L479 AbstractCegarLoop]: Abstraction has 18569 states and 25596 transitions. [2020-10-12 14:14:23,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:14:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 18569 states and 25596 transitions. [2020-10-12 14:14:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2020-10-12 14:14:23,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:14:23,241 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:14:23,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:14:23,242 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:14:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:14:23,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1711602206, now seen corresponding path program 1 times [2020-10-12 14:14:23,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:14:23,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649967346] [2020-10-12 14:14:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:14:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:23,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:26,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:26,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 582 [2020-10-12 14:14:26,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:14:26,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2966 [2020-10-12 14:14:26,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:14:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:14:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:14:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:26,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:14:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:26,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:26,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:14:26,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:26,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:14:26,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:26,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:26,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:26,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:26,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:26,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:14:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:26,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:26,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:26,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:14:26,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-12 14:14:26,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:14:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:14:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:14:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:27,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:27,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 14:14:27,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:27,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 14:14:27,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:14:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:14:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 14:14:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:27,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-12 14:14:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:27,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:27,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 14:14:27,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:27,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 14:14:27,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-12 14:14:27,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:27,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:27,713 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 242 proven. 84 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-12 14:14:27,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649967346] [2020-10-12 14:14:27,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:14:27,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:14:27,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526267435] [2020-10-12 14:14:27,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:14:27,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:14:27,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:14:27,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:14:27,717 INFO L87 Difference]: Start difference. First operand 18569 states and 25596 transitions. Second operand 7 states. [2020-10-12 14:14:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:14:39,240 INFO L93 Difference]: Finished difference Result 38210 states and 53085 transitions. [2020-10-12 14:14:39,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:14:39,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 568 [2020-10-12 14:14:39,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:14:39,327 INFO L225 Difference]: With dead ends: 38210 [2020-10-12 14:14:39,328 INFO L226 Difference]: Without dead ends: 19954 [2020-10-12 14:14:39,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:14:39,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19954 states. [2020-10-12 14:14:40,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19954 to 19296. [2020-10-12 14:14:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19296 states. [2020-10-12 14:14:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19296 states to 19296 states and 24458 transitions. [2020-10-12 14:14:40,057 INFO L78 Accepts]: Start accepts. Automaton has 19296 states and 24458 transitions. Word has length 568 [2020-10-12 14:14:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:14:40,058 INFO L479 AbstractCegarLoop]: Abstraction has 19296 states and 24458 transitions. [2020-10-12 14:14:40,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:14:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 19296 states and 24458 transitions. [2020-10-12 14:14:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2020-10-12 14:14:40,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:14:40,086 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:14:40,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:14:40,087 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:14:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:14:40,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1856136448, now seen corresponding path program 1 times [2020-10-12 14:14:40,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:14:40,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508214205] [2020-10-12 14:14:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:14:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:40,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:43,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:43,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 608 [2020-10-12 14:14:43,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:14:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3420 [2020-10-12 14:14:43,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:14:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-12 14:14:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-12 14:14:43,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:43,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:14:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:43,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:43,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:14:43,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:14:43,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:43,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:43,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:43,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:14:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:43,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:43,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:14:43,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 14:14:43,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:14:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:43,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:14:43,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:43,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:14:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:43,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:44,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:44,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:14:44,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:44,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-12 14:14:44,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:14:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:14:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:14:44,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:14:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:14:44,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:14:44,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:14:44,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 14:14:44,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:14:44,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 14:14:44,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:14:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:14:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:14:44,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-12 14:14:44,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:14:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 14:14:44,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508214205] [2020-10-12 14:14:44,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:14:44,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:14:44,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422417157] [2020-10-12 14:14:44,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:14:44,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:14:44,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:14:44,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:14:44,584 INFO L87 Difference]: Start difference. First operand 19296 states and 24458 transitions. Second operand 7 states. [2020-10-12 14:15:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:15:00,834 INFO L93 Difference]: Finished difference Result 44554 states and 59338 transitions. [2020-10-12 14:15:00,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:15:00,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 594 [2020-10-12 14:15:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:15:00,943 INFO L225 Difference]: With dead ends: 44554 [2020-10-12 14:15:00,943 INFO L226 Difference]: Without dead ends: 25571 [2020-10-12 14:15:00,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:15:01,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25571 states. [2020-10-12 14:15:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25571 to 25224. [2020-10-12 14:15:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25224 states. [2020-10-12 14:15:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25224 states to 25224 states and 31250 transitions. [2020-10-12 14:15:01,647 INFO L78 Accepts]: Start accepts. Automaton has 25224 states and 31250 transitions. Word has length 594 [2020-10-12 14:15:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:15:01,648 INFO L479 AbstractCegarLoop]: Abstraction has 25224 states and 31250 transitions. [2020-10-12 14:15:01,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:15:01,648 INFO L276 IsEmpty]: Start isEmpty. Operand 25224 states and 31250 transitions. [2020-10-12 14:15:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2020-10-12 14:15:01,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:15:01,689 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:15:01,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:15:01,690 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:15:01,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:15:01,691 INFO L82 PathProgramCache]: Analyzing trace with hash 460356186, now seen corresponding path program 1 times [2020-10-12 14:15:01,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:15:01,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770529977] [2020-10-12 14:15:01,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:15:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:01,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:02,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:04,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:06,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:06,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 718 [2020-10-12 14:15:06,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 14:15:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 14:15:06,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:15:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:15:06,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 468 [2020-10-12 14:15:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:06,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:15:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:06,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:06,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:15:06,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:15:06,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:15:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:15:06,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:07,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:15:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:07,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:07,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:07,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:15:07,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-12 14:15:07,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:15:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:15:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-12 14:15:07,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:15:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:15:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:07,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:07,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:07,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 14:15:07,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 14:15:07,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:15:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:15:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 14:15:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-12 14:15:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:07,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:07,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:07,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:15:07,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:15:07,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 14:15:07,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:15:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:15:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:15:07,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-12 14:15:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:07,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:08,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:08,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 14:15:08,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 14:15:08,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:15:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-12 14:15:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:15:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:08,490 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 225 proven. 490 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 14:15:08,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770529977] [2020-10-12 14:15:08,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:15:08,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:15:08,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235985735] [2020-10-12 14:15:08,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:15:08,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:15:08,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:15:08,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:15:08,493 INFO L87 Difference]: Start difference. First operand 25224 states and 31250 transitions. Second operand 10 states. [2020-10-12 14:15:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:15:32,964 INFO L93 Difference]: Finished difference Result 60107 states and 79795 transitions. [2020-10-12 14:15:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 14:15:32,968 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 702 [2020-10-12 14:15:32,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:15:33,185 INFO L225 Difference]: With dead ends: 60107 [2020-10-12 14:15:33,185 INFO L226 Difference]: Without dead ends: 37005 [2020-10-12 14:15:33,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-10-12 14:15:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37005 states. [2020-10-12 14:15:34,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37005 to 35738. [2020-10-12 14:15:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35738 states. [2020-10-12 14:15:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35738 states to 35738 states and 45169 transitions. [2020-10-12 14:15:34,556 INFO L78 Accepts]: Start accepts. Automaton has 35738 states and 45169 transitions. Word has length 702 [2020-10-12 14:15:34,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:15:34,557 INFO L479 AbstractCegarLoop]: Abstraction has 35738 states and 45169 transitions. [2020-10-12 14:15:34,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:15:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 35738 states and 45169 transitions. [2020-10-12 14:15:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2020-10-12 14:15:34,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:15:34,593 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 14:15:34,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:15:34,593 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:15:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:15:34,594 INFO L82 PathProgramCache]: Analyzing trace with hash 957446696, now seen corresponding path program 1 times [2020-10-12 14:15:34,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:15:34,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997079170] [2020-10-12 14:15:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:15:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:35,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:39,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:39,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 743 [2020-10-12 14:15:39,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:15:39,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-12 14:15:39,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:15:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 682 [2020-10-12 14:15:39,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 14:15:39,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:40,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:15:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:40,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:40,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:15:40,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:40,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:15:40,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:15:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:15:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:40,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:15:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:40,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:40,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:40,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:15:40,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:40,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:15:40,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:15:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:40,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:15:40,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:40,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:15:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:40,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:15:40,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:40,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:15:40,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:15:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:15:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-12 14:15:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:15:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:15:40,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:15:40,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-12 14:15:40,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:15:40,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-12 14:15:40,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:15:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 14:15:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:15:40,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-12 14:15:40,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:15:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 159 proven. 3 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2020-10-12 14:15:41,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997079170] [2020-10-12 14:15:41,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:15:41,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:15:41,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883197481] [2020-10-12 14:15:41,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:15:41,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:15:41,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:15:41,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:15:41,231 INFO L87 Difference]: Start difference. First operand 35738 states and 45169 transitions. Second operand 6 states. [2020-10-12 14:15:56,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:15:56,538 INFO L93 Difference]: Finished difference Result 84098 states and 106994 transitions. [2020-10-12 14:15:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:15:56,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 729 [2020-10-12 14:15:56,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted.