/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/Problem16_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:23:00,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:23:00,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:23:00,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:23:00,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:23:00,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:23:00,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:23:00,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:23:00,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:23:00,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:23:00,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:23:00,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:23:00,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:23:00,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:23:00,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:23:00,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:23:00,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:23:00,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:23:00,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:23:00,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:23:00,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:23:00,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:23:00,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:23:00,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:23:00,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:23:00,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:23:00,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:23:00,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:23:00,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:23:00,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:23:00,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:23:00,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:23:00,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:23:00,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:23:00,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:23:00,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:23:00,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:23:00,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:23:00,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:23:00,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:23:00,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:23:00,371 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 14:23:00,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:23:00,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:23:00,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:23:00,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:23:00,417 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:23:00,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:23:00,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:23:00,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:23:00,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:23:00,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:23:00,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:23:00,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:23:00,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:23:00,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:23:00,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:23:00,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:23:00,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:23:00,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:23:00,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:23:00,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:23:00,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:23:00,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:23:00,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:23:00,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:23:00,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:23:00,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:23:00,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:23:00,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:23:00,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:23:00,424 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 14:23:00,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:23:00,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:23:00,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:23:00,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:23:00,785 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:23:00,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2020-10-12 14:23:00,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4feacee18/532543f188354aa2b727031bec2dc916/FLAG3ea1d0160 [2020-10-12 14:23:01,571 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:23:01,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2020-10-12 14:23:01,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4feacee18/532543f188354aa2b727031bec2dc916/FLAG3ea1d0160 [2020-10-12 14:23:01,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4feacee18/532543f188354aa2b727031bec2dc916 [2020-10-12 14:23:01,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:23:01,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:23:01,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:23:01,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:23:01,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:23:01,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:23:01" (1/1) ... [2020-10-12 14:23:01,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:01, skipping insertion in model container [2020-10-12 14:23:01,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:23:01" (1/1) ... [2020-10-12 14:23:01,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:23:01,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:23:02,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:23:02,813 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:23:03,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:23:03,182 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:23:03,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:03 WrapperNode [2020-10-12 14:23:03,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:23:03,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:23:03,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:23:03,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:23:03,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:03" (1/1) ... [2020-10-12 14:23:03,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:03" (1/1) ... [2020-10-12 14:23:03,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:03" (1/1) ... [2020-10-12 14:23:03,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:03" (1/1) ... [2020-10-12 14:23:03,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:03" (1/1) ... [2020-10-12 14:23:03,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:03" (1/1) ... [2020-10-12 14:23:03,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:03" (1/1) ... [2020-10-12 14:23:03,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:23:03,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:23:03,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:23:03,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:23:03,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:03" (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 14:23:03,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:23:03,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:23:03,453 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:23:03,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:23:03,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:23:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:23:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:23:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:23:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:23:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:23:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:23:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:23:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:23:05,866 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:23:05,866 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:23:05,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:23:05 BoogieIcfgContainer [2020-10-12 14:23:05,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:23:05,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:23:05,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:23:05,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:23:05,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:23:01" (1/3) ... [2020-10-12 14:23:05,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aebc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:23:05, skipping insertion in model container [2020-10-12 14:23:05,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:23:03" (2/3) ... [2020-10-12 14:23:05,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aebc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:23:05, skipping insertion in model container [2020-10-12 14:23:05,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:23:05" (3/3) ... [2020-10-12 14:23:05,882 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label03.c [2020-10-12 14:23:05,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:23:05,901 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:23:05,915 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:23:05,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:23:05,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:23:05,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:23:05,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:23:05,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:23:05,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:23:05,943 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:23:05,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:23:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-12 14:23:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 14:23:05,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:05,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:23:05,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:05,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:05,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1120650517, now seen corresponding path program 1 times [2020-10-12 14:23:05,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:05,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733582453] [2020-10-12 14:23:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:06,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 14:23:06,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-12 14:23:06,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:23:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:23:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 14:23:06,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:23:06,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:06,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:06,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:06,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:23:06,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:23:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:06,501 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 14:23:06,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733582453] [2020-10-12 14:23:06,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:23:06,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:23:06,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349100499] [2020-10-12 14:23:06,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:23:06,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:06,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:23:06,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:23:06,530 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-12 14:23:10,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:10,599 INFO L93 Difference]: Finished difference Result 1169 states and 2164 transitions. [2020-10-12 14:23:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:23:10,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-12 14:23:10,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:10,622 INFO L225 Difference]: With dead ends: 1169 [2020-10-12 14:23:10,622 INFO L226 Difference]: Without dead ends: 696 [2020-10-12 14:23:10,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:23:10,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-12 14:23:10,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 692. [2020-10-12 14:23:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-12 14:23:10,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1014 transitions. [2020-10-12 14:23:10,741 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1014 transitions. Word has length 12 [2020-10-12 14:23:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:10,741 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 1014 transitions. [2020-10-12 14:23:10,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:23:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1014 transitions. [2020-10-12 14:23:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 14:23:10,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:10,746 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 14:23:10,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:23:10,747 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:10,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:10,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1461469944, now seen corresponding path program 1 times [2020-10-12 14:23:10,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:10,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648710194] [2020-10-12 14:23:10,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:11,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:11,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:11,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 14:23:11,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:23:11,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-12 14:23:11,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:11,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:23:11,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:23:11,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:23:11,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:23:11,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:11,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:11,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:11,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:11,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:23:11,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:23:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:11,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:23:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:11,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:11,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:11,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:23:11,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:11,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 14:23:11,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:11,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:11,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:23:11,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:11,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:23:11,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648710194] [2020-10-12 14:23:11,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:23:11,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 14:23:11,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799212503] [2020-10-12 14:23:11,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:23:11,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:11,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:23:11,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:23:11,963 INFO L87 Difference]: Start difference. First operand 692 states and 1014 transitions. Second operand 8 states. [2020-10-12 14:23:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:18,565 INFO L93 Difference]: Finished difference Result 2769 states and 4138 transitions. [2020-10-12 14:23:18,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:23:18,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-10-12 14:23:18,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:18,580 INFO L225 Difference]: With dead ends: 2769 [2020-10-12 14:23:18,580 INFO L226 Difference]: Without dead ends: 2083 [2020-10-12 14:23:18,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:23:18,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2020-10-12 14:23:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2069. [2020-10-12 14:23:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2020-10-12 14:23:18,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2817 transitions. [2020-10-12 14:23:18,664 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2817 transitions. Word has length 88 [2020-10-12 14:23:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:18,665 INFO L479 AbstractCegarLoop]: Abstraction has 2069 states and 2817 transitions. [2020-10-12 14:23:18,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:23:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2817 transitions. [2020-10-12 14:23:18,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 14:23:18,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:18,673 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 14:23:18,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:23:18,674 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:18,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:18,674 INFO L82 PathProgramCache]: Analyzing trace with hash 323379736, now seen corresponding path program 1 times [2020-10-12 14:23:18,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:18,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127839927] [2020-10-12 14:23:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:18,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:18,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:19,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:20,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:20,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 14:23:20,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:23:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1961 [2020-10-12 14:23:20,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 14:23:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:23:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-12 14:23:20,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:23:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:20,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:20,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:20,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:20,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:20,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:23:20,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:20,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:20,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:20,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:23:20,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:20,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:23:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:21,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:21,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 14:23:21,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:23:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-12 14:23:21,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:21,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 14:23:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:23:21,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 14:23:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:21,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:21,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:23:21,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:23:21,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-12 14:23:21,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:23:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:23:21,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:22,020 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-12 14:23:22,179 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-12 14:23:22,312 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-12 14:23:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 14:23:22,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127839927] [2020-10-12 14:23:22,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:23:22,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 14:23:22,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074887126] [2020-10-12 14:23:22,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 14:23:22,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:22,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 14:23:22,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:23:22,691 INFO L87 Difference]: Start difference. First operand 2069 states and 2817 transitions. Second operand 12 states. [2020-10-12 14:23:23,302 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-12 14:23:24,044 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-10-12 14:23:25,122 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-10-12 14:23:26,641 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 14:23:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:32,840 INFO L93 Difference]: Finished difference Result 5694 states and 8144 transitions. [2020-10-12 14:23:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 14:23:32,841 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 175 [2020-10-12 14:23:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:32,876 INFO L225 Difference]: With dead ends: 5694 [2020-10-12 14:23:32,876 INFO L226 Difference]: Without dead ends: 3631 [2020-10-12 14:23:32,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 14:23:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2020-10-12 14:23:33,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3472. [2020-10-12 14:23:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3472 states. [2020-10-12 14:23:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 4828 transitions. [2020-10-12 14:23:33,031 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 4828 transitions. Word has length 175 [2020-10-12 14:23:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:33,035 INFO L479 AbstractCegarLoop]: Abstraction has 3472 states and 4828 transitions. [2020-10-12 14:23:33,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 14:23:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 4828 transitions. [2020-10-12 14:23:33,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-12 14:23:33,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:33,050 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:23:33,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:23:33,062 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:33,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:33,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1744316093, now seen corresponding path program 1 times [2020-10-12 14:23:33,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:33,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007429211] [2020-10-12 14:23:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:33,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:33,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:34,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:34,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:35,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:37,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:38,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:38,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-12 14:23:38,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 14:23:38,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 14:23:38,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 14:23:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-12 14:23:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-12 14:23:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:38,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:38,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:38,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:38,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:23:38,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:38,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:23:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:38,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:38,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:38,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 14:23:38,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:38,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 14:23:38,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 14:23:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:23:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 14:23:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:38,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:38,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 14:23:38,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:23:38,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-12 14:23:38,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 14:23:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-12 14:23:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:38,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:39,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:39,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:23:39,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:23:39,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-12 14:23:39,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:39,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:23:39,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:39,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:23:39,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:39,566 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-12 14:23:39,976 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 174 proven. 99 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 14:23:39,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007429211] [2020-10-12 14:23:39,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:23:39,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:23:39,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250288365] [2020-10-12 14:23:39,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:23:39,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:39,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:23:39,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:23:39,979 INFO L87 Difference]: Start difference. First operand 3472 states and 4828 transitions. Second operand 13 states. [2020-10-12 14:23:41,989 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-12 14:23:44,695 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-12 14:23:44,891 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-10-12 14:23:45,189 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-10-12 14:23:50,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:50,885 INFO L93 Difference]: Finished difference Result 9197 states and 13833 transitions. [2020-10-12 14:23:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 14:23:50,891 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 325 [2020-10-12 14:23:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:50,916 INFO L225 Difference]: With dead ends: 9197 [2020-10-12 14:23:50,916 INFO L226 Difference]: Without dead ends: 4595 [2020-10-12 14:23:50,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 14:23:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2020-10-12 14:23:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4497. [2020-10-12 14:23:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4497 states. [2020-10-12 14:23:51,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 5288 transitions. [2020-10-12 14:23:51,089 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 5288 transitions. Word has length 325 [2020-10-12 14:23:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:51,090 INFO L479 AbstractCegarLoop]: Abstraction has 4497 states and 5288 transitions. [2020-10-12 14:23:51,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:23:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 5288 transitions. [2020-10-12 14:23:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-12 14:23:51,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:51,099 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:23:51,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:23:51,100 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:51,100 INFO L82 PathProgramCache]: Analyzing trace with hash -459135760, now seen corresponding path program 1 times [2020-10-12 14:23:51,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:51,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517658876] [2020-10-12 14:23:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:51,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:52,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:56,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:56,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-12 14:23:56,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:23:56,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-12 14:23:56,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:23:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:23:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:23:56,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:23:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:56,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:56,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:56,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:56,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:23:56,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:23:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:56,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:23:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:56,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:56,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 14:23:56,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 14:23:56,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:23:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 14:23:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:56,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 14:23:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:56,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:56,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:56,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 14:23:56,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:56,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:23:56,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-12 14:23:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:56,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:56,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-10-12 14:23:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:56,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:56,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:56,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:23:56,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 14:23:56,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 14:23:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 15 proven. 177 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-12 14:23:56,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517658876] [2020-10-12 14:23:56,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:23:56,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:23:56,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979938494] [2020-10-12 14:23:56,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:23:56,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:56,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:23:56,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:23:56,840 INFO L87 Difference]: Start difference. First operand 4497 states and 5288 transitions. Second operand 7 states. [2020-10-12 14:24:00,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:24:00,737 INFO L93 Difference]: Finished difference Result 13108 states and 15751 transitions. [2020-10-12 14:24:00,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:24:00,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-12 14:24:00,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:24:00,773 INFO L225 Difference]: With dead ends: 13108 [2020-10-12 14:24:00,773 INFO L226 Difference]: Without dead ends: 8617 [2020-10-12 14:24:00,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:24:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8617 states. [2020-10-12 14:24:00,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8617 to 8609. [2020-10-12 14:24:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8609 states. [2020-10-12 14:24:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8609 states to 8609 states and 10224 transitions. [2020-10-12 14:24:00,977 INFO L78 Accepts]: Start accepts. Automaton has 8609 states and 10224 transitions. Word has length 362 [2020-10-12 14:24:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:24:00,978 INFO L479 AbstractCegarLoop]: Abstraction has 8609 states and 10224 transitions. [2020-10-12 14:24:00,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:24:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 8609 states and 10224 transitions. [2020-10-12 14:24:00,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-12 14:24:00,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:24:00,988 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:00,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:24:00,988 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:24:00,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:24:00,989 INFO L82 PathProgramCache]: Analyzing trace with hash 863872748, now seen corresponding path program 1 times [2020-10-12 14:24:00,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:24:00,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282640438] [2020-10-12 14:24:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:24:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:01,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:01,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:06,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:06,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-12 14:24:06,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:24:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-12 14:24:06,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 14:24:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:24:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-12 14:24:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:24:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:06,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:06,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:24:06,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:06,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:24:06,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:24:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:24:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:24:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:24:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:06,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:06,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:07,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:07,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-12 14:24:07,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:24:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-12 14:24:07,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:07,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:24:07,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-12 14:24:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:24:08,237 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-12 14:24:08,536 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-12 14:24:08,843 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-12 14:24:09,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-12 14:24:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:09,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:09,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 14:24:09,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:09,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 14:24:09,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-12 14:24:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:09,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 10 proven. 139 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:24:10,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282640438] [2020-10-12 14:24:10,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:24:10,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 14:24:10,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316568764] [2020-10-12 14:24:10,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 14:24:10,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:24:10,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 14:24:10,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:24:10,888 INFO L87 Difference]: Start difference. First operand 8609 states and 10224 transitions. Second operand 13 states. [2020-10-12 14:24:11,906 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2020-10-12 14:24:12,343 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-12 14:24:12,739 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-10-12 14:24:13,272 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-10-12 14:24:13,826 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2020-10-12 14:24:14,162 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 57 [2020-10-12 14:24:15,009 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-12 14:24:15,382 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-12 14:24:15,657 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-12 14:24:16,012 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-12 14:24:16,502 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-12 14:24:16,723 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2020-10-12 14:24:17,241 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-12 14:24:18,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:24:18,096 INFO L93 Difference]: Finished difference Result 17211 states and 20441 transitions. [2020-10-12 14:24:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 14:24:18,097 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 405 [2020-10-12 14:24:18,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:24:18,143 INFO L225 Difference]: With dead ends: 17211 [2020-10-12 14:24:18,143 INFO L226 Difference]: Without dead ends: 8516 [2020-10-12 14:24:18,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-10-12 14:24:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8516 states. [2020-10-12 14:24:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8516 to 8516. [2020-10-12 14:24:18,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8516 states. [2020-10-12 14:24:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 10128 transitions. [2020-10-12 14:24:18,355 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 10128 transitions. Word has length 405 [2020-10-12 14:24:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:24:18,356 INFO L479 AbstractCegarLoop]: Abstraction has 8516 states and 10128 transitions. [2020-10-12 14:24:18,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 14:24:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 10128 transitions. [2020-10-12 14:24:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-12 14:24:18,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:24:18,370 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:18,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:24:18,371 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:24:18,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:24:18,371 INFO L82 PathProgramCache]: Analyzing trace with hash 610984781, now seen corresponding path program 1 times [2020-10-12 14:24:18,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:24:18,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785639743] [2020-10-12 14:24:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:24:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:18,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:19,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:22,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:22,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 515 [2020-10-12 14:24:22,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:24:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3592 [2020-10-12 14:24:22,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 14:24:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:24:22,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 499 [2020-10-12 14:24:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:22,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:24:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:22,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:22,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:24:22,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:22,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:24:22,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:22,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:24:22,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:22,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:24:22,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:22,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:24:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:22,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:22,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:22,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:22,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 14:24:22,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:24:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-12 14:24:22,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-12 14:24:22,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:22,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 14:24:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:22,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:22,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:22,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 14:24:22,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:24:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-12 14:24:22,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-12 14:24:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-12 14:24:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:22,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:22,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:22,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:24:22,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 14:24:22,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:24:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 175 proven. 84 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 14:24:23,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785639743] [2020-10-12 14:24:23,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:24:23,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:24:23,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787850642] [2020-10-12 14:24:23,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:24:23,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:24:23,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:24:23,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:24:23,285 INFO L87 Difference]: Start difference. First operand 8516 states and 10128 transitions. Second operand 8 states. [2020-10-12 14:24:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:24:26,367 INFO L93 Difference]: Finished difference Result 18883 states and 23092 transitions. [2020-10-12 14:24:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:24:26,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 501 [2020-10-12 14:24:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:24:26,407 INFO L225 Difference]: With dead ends: 18883 [2020-10-12 14:24:26,408 INFO L226 Difference]: Without dead ends: 10617 [2020-10-12 14:24:26,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:24:26,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2020-10-12 14:24:26,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10563. [2020-10-12 14:24:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10563 states. [2020-10-12 14:24:26,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10563 states to 10563 states and 12527 transitions. [2020-10-12 14:24:26,719 INFO L78 Accepts]: Start accepts. Automaton has 10563 states and 12527 transitions. Word has length 501 [2020-10-12 14:24:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:24:26,722 INFO L479 AbstractCegarLoop]: Abstraction has 10563 states and 12527 transitions. [2020-10-12 14:24:26,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:24:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 10563 states and 12527 transitions. [2020-10-12 14:24:26,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-12 14:24:26,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:24:26,749 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:24:26,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:24:26,749 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:24:26,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:24:26,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1942401816, now seen corresponding path program 1 times [2020-10-12 14:24:26,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:24:26,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502603976] [2020-10-12 14:24:26,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:24:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:27,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:27,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:29,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:29,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 572 [2020-10-12 14:24:29,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:24:29,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2664 [2020-10-12 14:24:29,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-12 14:24:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-12 14:24:29,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:24:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:29,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:29,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:24:29,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:24:29,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:29,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:24:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:29,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:29,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 14:24:29,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:24:29,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:29,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:29,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 14:24:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:29,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:29,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 14:24:29,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:29,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 14:24:29,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:24:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-12 14:24:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:29,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-12 14:24:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:29,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:29,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:29,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 14:24:29,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 14:24:29,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-12 14:24:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-12 14:24:30,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502603976] [2020-10-12 14:24:30,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:24:30,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:24:30,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064226571] [2020-10-12 14:24:30,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:24:30,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:24:30,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:24:30,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:24:30,256 INFO L87 Difference]: Start difference. First operand 10563 states and 12527 transitions. Second operand 7 states. [2020-10-12 14:24:33,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:24:33,581 INFO L93 Difference]: Finished difference Result 20886 states and 24833 transitions. [2020-10-12 14:24:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:24:33,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-12 14:24:33,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:24:33,616 INFO L225 Difference]: With dead ends: 20886 [2020-10-12 14:24:33,616 INFO L226 Difference]: Without dead ends: 10573 [2020-10-12 14:24:33,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:24:33,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10573 states. [2020-10-12 14:24:33,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10573 to 10569. [2020-10-12 14:24:33,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10569 states. [2020-10-12 14:24:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 12309 transitions. [2020-10-12 14:24:33,822 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 12309 transitions. Word has length 558 [2020-10-12 14:24:33,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:24:33,823 INFO L479 AbstractCegarLoop]: Abstraction has 10569 states and 12309 transitions. [2020-10-12 14:24:33,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:24:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 12309 transitions. [2020-10-12 14:24:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2020-10-12 14:24:33,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:24:33,836 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:24:33,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:24:33,836 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:24:33,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:24:33,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1756145420, now seen corresponding path program 1 times [2020-10-12 14:24:33,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:24:33,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888857488] [2020-10-12 14:24:33,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:24:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:34,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:34,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:35,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:38,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:38,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 658 [2020-10-12 14:24:38,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:24:38,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 14:24:38,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:24:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:24:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 496 [2020-10-12 14:24:38,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:39,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:24:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:39,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:39,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:39,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:24:39,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:39,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:24:39,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:24:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:39,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:24:39,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:39,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:24:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:39,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:39,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 14:24:39,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:39,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 14:24:39,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:39,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:39,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:39,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-12 14:24:39,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:39,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 14:24:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:39,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:39,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:39,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-12 14:24:39,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:39,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 14:24:39,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-12 14:24:39,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:39,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-12 14:24:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:40,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:40,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 14:24:40,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:40,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 14:24:40,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:40,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-12 14:24:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:40,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 20 proven. 512 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 14:24:40,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888857488] [2020-10-12 14:24:40,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:24:40,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:24:40,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56451538] [2020-10-12 14:24:40,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:24:40,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:24:40,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:24:40,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:24:40,649 INFO L87 Difference]: Start difference. First operand 10569 states and 12309 transitions. Second operand 8 states. [2020-10-12 14:24:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:24:43,693 INFO L93 Difference]: Finished difference Result 21227 states and 24719 transitions. [2020-10-12 14:24:43,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:24:43,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 644 [2020-10-12 14:24:43,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:24:43,730 INFO L225 Difference]: With dead ends: 21227 [2020-10-12 14:24:43,730 INFO L226 Difference]: Without dead ends: 10908 [2020-10-12 14:24:43,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:24:43,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10908 states. [2020-10-12 14:24:43,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10908 to 10908. [2020-10-12 14:24:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10908 states. [2020-10-12 14:24:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10908 states to 10908 states and 12661 transitions. [2020-10-12 14:24:43,950 INFO L78 Accepts]: Start accepts. Automaton has 10908 states and 12661 transitions. Word has length 644 [2020-10-12 14:24:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:24:43,951 INFO L479 AbstractCegarLoop]: Abstraction has 10908 states and 12661 transitions. [2020-10-12 14:24:43,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:24:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 10908 states and 12661 transitions. [2020-10-12 14:24:43,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2020-10-12 14:24:43,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:24:43,964 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:24:43,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:24:43,964 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:24:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:24:43,965 INFO L82 PathProgramCache]: Analyzing trace with hash 216817052, now seen corresponding path program 1 times [2020-10-12 14:24:43,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:24:43,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640974053] [2020-10-12 14:24:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:24:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:49,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:49,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 666 [2020-10-12 14:24:49,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:24:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 14:24:49,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:24:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:24:49,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-12 14:24:49,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:49,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:24:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:49,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:49,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:24:49,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:49,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:24:49,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:24:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:49,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:24:49,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:49,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:24:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:49,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:49,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:49,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 14:24:49,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:24:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-12 14:24:49,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-12 14:24:49,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:49,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 14:24:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:49,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-12 14:24:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-12 14:24:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:24:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-12 14:24:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:50,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-12 14:24:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:50,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:50,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 14:24:50,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 14:24:50,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-12 14:24:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:50,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 20 proven. 520 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 14:24:50,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640974053] [2020-10-12 14:24:50,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:24:50,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:24:50,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984187796] [2020-10-12 14:24:50,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:24:50,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:24:50,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:24:50,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:24:50,828 INFO L87 Difference]: Start difference. First operand 10908 states and 12661 transitions. Second operand 8 states. [2020-10-12 14:24:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:24:53,973 INFO L93 Difference]: Finished difference Result 21241 states and 24761 transitions. [2020-10-12 14:24:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:24:53,974 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 652 [2020-10-12 14:24:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:24:54,008 INFO L225 Difference]: With dead ends: 21241 [2020-10-12 14:24:54,008 INFO L226 Difference]: Without dead ends: 10922 [2020-10-12 14:24:54,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 14:24:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10922 states. [2020-10-12 14:24:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10922 to 10912. [2020-10-12 14:24:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10912 states. [2020-10-12 14:24:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 12667 transitions. [2020-10-12 14:24:54,191 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 12667 transitions. Word has length 652 [2020-10-12 14:24:54,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:24:54,192 INFO L479 AbstractCegarLoop]: Abstraction has 10912 states and 12667 transitions. [2020-10-12 14:24:54,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:24:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 12667 transitions. [2020-10-12 14:24:54,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2020-10-12 14:24:54,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:24:54,210 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 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, 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, 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] [2020-10-12 14:24:54,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:24:54,210 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:24:54,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:24:54,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1816072328, now seen corresponding path program 1 times [2020-10-12 14:24:54,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:24:54,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821768864] [2020-10-12 14:24:54,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:24:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:54,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:58,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:58,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 720 [2020-10-12 14:24:58,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:24:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4430 [2020-10-12 14:24:58,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:24:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 708 [2020-10-12 14:24:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 14:24:58,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:58,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:24:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:58,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:58,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:58,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:24:58,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:58,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:24:58,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:58,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:24:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:58,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:58,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:58,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 14:24:58,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:58,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 14:24:58,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:58,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:59,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 14:24:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:59,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:59,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:59,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 14:24:59,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:24:59,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:59,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-12 14:24:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:59,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:59,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:59,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 14:24:59,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 14:24:59,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:59,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-12 14:24:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:59,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:59,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 14:24:59,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:59,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:24:59,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:59,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:24:59,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:59,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:24:59,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:59,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-12 14:24:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:24:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:24:59,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:24:59,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 14:24:59,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:24:59,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:24:59,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:24:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:24:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:24:59,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 14:24:59,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:24:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2020-10-12 14:24:59,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821768864] [2020-10-12 14:24:59,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:24:59,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:24:59,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422765278] [2020-10-12 14:24:59,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:24:59,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:24:59,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:24:59,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:24:59,354 INFO L87 Difference]: Start difference. First operand 10912 states and 12667 transitions. Second operand 5 states. [2020-10-12 14:25:02,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:25:02,136 INFO L93 Difference]: Finished difference Result 21235 states and 24729 transitions. [2020-10-12 14:25:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:25:02,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 702 [2020-10-12 14:25:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:25:02,159 INFO L225 Difference]: With dead ends: 21235 [2020-10-12 14:25:02,159 INFO L226 Difference]: Without dead ends: 10912 [2020-10-12 14:25:02,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 14:25:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2020-10-12 14:25:02,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 10910. [2020-10-12 14:25:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10910 states. [2020-10-12 14:25:02,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10910 states to 10910 states and 12117 transitions. [2020-10-12 14:25:02,368 INFO L78 Accepts]: Start accepts. Automaton has 10910 states and 12117 transitions. Word has length 702 [2020-10-12 14:25:02,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:25:02,369 INFO L479 AbstractCegarLoop]: Abstraction has 10910 states and 12117 transitions. [2020-10-12 14:25:02,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:25:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 10910 states and 12117 transitions. [2020-10-12 14:25:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2020-10-12 14:25:02,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:25:02,393 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 14:25:02,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:25:02,393 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:25:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:25:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash -831941283, now seen corresponding path program 1 times [2020-10-12 14:25:02,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:25:02,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110427320] [2020-10-12 14:25:02,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:25:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:02,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:03,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:07,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:07,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 855 [2020-10-12 14:25:07,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:25:07,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4733 [2020-10-12 14:25:07,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 754 [2020-10-12 14:25:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 14:25:07,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:07,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:25:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:07,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:07,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:07,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:25:07,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:07,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:25:07,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:07,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:07,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:25:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:07,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:07,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:07,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 14:25:07,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 14:25:07,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:07,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:07,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 14:25:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:07,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:07,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 14:25:07,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 14:25:07,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-12 14:25:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:07,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:07,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:07,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 14:25:07,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 14:25:07,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:07,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:07,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:07,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-12 14:25:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:07,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:07,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:07,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-12 14:25:07,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 14:25:07,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:25:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-12 14:25:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:07,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 746 [2020-10-12 14:25:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:07,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:07,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:07,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:25:07,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 14:25:07,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:25:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:25:07,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:25:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-10-12 14:25:08,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110427320] [2020-10-12 14:25:08,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:25:08,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:25:08,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655442724] [2020-10-12 14:25:08,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:25:08,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:25:08,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:25:08,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:25:08,408 INFO L87 Difference]: Start difference. First operand 10910 states and 12117 transitions. Second operand 7 states. [2020-10-12 14:25:12,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:25:12,036 INFO L93 Difference]: Finished difference Result 21267 states and 23734 transitions. [2020-10-12 14:25:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:25:12,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 837 [2020-10-12 14:25:12,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:25:12,063 INFO L225 Difference]: With dead ends: 21267 [2020-10-12 14:25:12,064 INFO L226 Difference]: Without dead ends: 10946 [2020-10-12 14:25:12,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:25:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10946 states. [2020-10-12 14:25:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10946 to 10228. [2020-10-12 14:25:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10228 states. [2020-10-12 14:25:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10228 states to 10228 states and 10971 transitions. [2020-10-12 14:25:12,265 INFO L78 Accepts]: Start accepts. Automaton has 10228 states and 10971 transitions. Word has length 837 [2020-10-12 14:25:12,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:25:12,266 INFO L479 AbstractCegarLoop]: Abstraction has 10228 states and 10971 transitions. [2020-10-12 14:25:12,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:25:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand 10228 states and 10971 transitions. [2020-10-12 14:25:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2020-10-12 14:25:12,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:25:12,301 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:12,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:25:12,301 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:25:12,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:25:12,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1265371597, now seen corresponding path program 1 times [2020-10-12 14:25:12,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:25:12,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935327971] [2020-10-12 14:25:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:25:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:12,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:17,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:17,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1037 [2020-10-12 14:25:17,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:25:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 14:25:17,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-12 14:25:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 14:25:17,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:17,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:25:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:17,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:17,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:25:17,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:17,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:25:17,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:17,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:25:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:17,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:17,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:17,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 14:25:17,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:17,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 14:25:17,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:17,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:17,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 14:25:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:17,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:17,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 14:25:17,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:17,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 14:25:17,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:25:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:17,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 14:25:17,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:17,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-12 14:25:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:17,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:17,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:17,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 14:25:17,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:17,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 14:25:17,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:17,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:25:17,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 14:25:17,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:25:18,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-12 14:25:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:18,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:18,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 14:25:18,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:18,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 14:25:18,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-12 14:25:18,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:18,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-12 14:25:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:18,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:18,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:18,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:25:18,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 14:25:18,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 14:25:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:18,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-12 14:25:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:18,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:18,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:18,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-12 14:25:18,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:18,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 14:25:18,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:18,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-12 14:25:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:25:18,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-12 14:25:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:18,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:18,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:18,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:25:18,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 14:25:18,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 14:25:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:18,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:25:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2315 backedges. 295 proven. 431 refuted. 0 times theorem prover too weak. 1589 trivial. 0 not checked. [2020-10-12 14:25:19,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935327971] [2020-10-12 14:25:19,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:25:19,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:25:19,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201379019] [2020-10-12 14:25:19,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:25:19,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:25:19,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:25:19,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:25:19,561 INFO L87 Difference]: Start difference. First operand 10228 states and 10971 transitions. Second operand 7 states. [2020-10-12 14:25:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:25:23,261 INFO L93 Difference]: Finished difference Result 20557 states and 22146 transitions. [2020-10-12 14:25:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:25:23,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1015 [2020-10-12 14:25:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:25:23,286 INFO L225 Difference]: With dead ends: 20557 [2020-10-12 14:25:23,287 INFO L226 Difference]: Without dead ends: 10918 [2020-10-12 14:25:23,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:25:23,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10918 states. [2020-10-12 14:25:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10918 to 10904. [2020-10-12 14:25:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10904 states. [2020-10-12 14:25:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10904 states to 10904 states and 11550 transitions. [2020-10-12 14:25:23,463 INFO L78 Accepts]: Start accepts. Automaton has 10904 states and 11550 transitions. Word has length 1015 [2020-10-12 14:25:23,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:25:23,464 INFO L479 AbstractCegarLoop]: Abstraction has 10904 states and 11550 transitions. [2020-10-12 14:25:23,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:25:23,465 INFO L276 IsEmpty]: Start isEmpty. Operand 10904 states and 11550 transitions. [2020-10-12 14:25:23,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2020-10-12 14:25:23,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:25:23,502 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:23,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:25:23,502 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:25:23,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:25:23,503 INFO L82 PathProgramCache]: Analyzing trace with hash -894172991, now seen corresponding path program 1 times [2020-10-12 14:25:23,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:25:23,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687006158] [2020-10-12 14:25:23,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:25:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:23,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:28,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:28,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1231 [2020-10-12 14:25:28,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:25:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-12 14:25:28,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:25:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1016 [2020-10-12 14:25:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-12 14:25:28,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:25:29,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:25:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:29,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:29,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:25:29,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:29,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:25:29,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:29,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:29,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:25:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:29,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:29,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 14:25:29,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 14:25:29,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 14:25:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:29,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:29,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 14:25:29,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 14:25:29,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:29,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-12 14:25:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:29,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:29,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 14:25:29,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:29,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:25:29,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:29,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:29,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-12 14:25:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:29,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:29,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 14:25:29,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:29,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 14:25:29,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-12 14:25:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:29,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:29,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 14:25:29,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-12 14:25:29,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:25:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-12 14:25:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:29,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-12 14:25:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:29,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:29,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:29,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 14:25:29,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:25:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 14:25:29,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:25:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 14:25:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1118 [2020-10-12 14:25:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:30,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:30,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:30,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:25:30,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:30,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 14:25:30,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:30,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:30,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:25:30,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:25:30,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2748 backedges. 1108 proven. 6 refuted. 0 times theorem prover too weak. 1634 trivial. 0 not checked. [2020-10-12 14:25:30,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687006158] [2020-10-12 14:25:30,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:25:30,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:25:30,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948823856] [2020-10-12 14:25:30,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:25:30,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:25:30,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:25:30,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:25:30,837 INFO L87 Difference]: Start difference. First operand 10904 states and 11550 transitions. Second operand 8 states. [2020-10-12 14:25:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:25:34,842 INFO L93 Difference]: Finished difference Result 24308 states and 25946 transitions. [2020-10-12 14:25:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:25:34,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1209 [2020-10-12 14:25:34,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:25:34,867 INFO L225 Difference]: With dead ends: 24308 [2020-10-12 14:25:34,867 INFO L226 Difference]: Without dead ends: 12271 [2020-10-12 14:25:34,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:25:34,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12271 states. [2020-10-12 14:25:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12271 to 12239. [2020-10-12 14:25:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12239 states. [2020-10-12 14:25:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12239 states to 12239 states and 12903 transitions. [2020-10-12 14:25:35,041 INFO L78 Accepts]: Start accepts. Automaton has 12239 states and 12903 transitions. Word has length 1209 [2020-10-12 14:25:35,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:25:35,043 INFO L479 AbstractCegarLoop]: Abstraction has 12239 states and 12903 transitions. [2020-10-12 14:25:35,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:25:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 12239 states and 12903 transitions. [2020-10-12 14:25:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2020-10-12 14:25:35,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:25:35,081 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:25:35,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 14:25:35,082 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:25:35,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:25:35,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1158782066, now seen corresponding path program 1 times [2020-10-12 14:25:35,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:25:35,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477871599] [2020-10-12 14:25:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:25:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:40,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:40,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1336 [2020-10-12 14:25:40,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:25:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 14:25:40,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-12 14:25:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-12 14:25:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:25:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:40,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:40,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:25:40,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:40,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:25:40,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:40,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:40,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:25:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:40,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:40,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 14:25:40,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 14:25:40,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:25:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-12 14:25:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 14:25:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:40,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:41,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:41,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 14:25:41,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:41,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-12 14:25:41,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:25:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 14:25:41,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:25:41,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-12 14:25:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:41,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:41,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 14:25:41,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 14:25:41,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-12 14:25:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:41,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:41,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-12 14:25:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:41,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:41,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 14:25:41,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:41,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:25:41,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-12 14:25:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:41,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:41,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-12 14:25:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:41,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:41,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:41,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 14:25:41,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:41,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 14:25:41,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-12 14:25:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:41,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 752 [2020-10-12 14:25:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:41,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:41,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:41,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-12 14:25:41,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 14:25:41,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 14:25:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 894 [2020-10-12 14:25:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:41,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:41,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:41,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 14:25:41,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:41,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:25:41,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:41,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-12 14:25:41,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:41,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2020-10-12 14:25:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:41,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:41,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-12 14:25:41,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 14:25:41,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-12 14:25:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:41,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:41,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1219 [2020-10-12 14:25:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:41,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:41,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:25:41,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:41,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 14:25:41,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:41,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:41,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 14:25:41,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4058 backedges. 232 proven. 825 refuted. 0 times theorem prover too weak. 3001 trivial. 0 not checked. [2020-10-12 14:25:43,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477871599] [2020-10-12 14:25:43,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:25:43,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:25:43,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942327455] [2020-10-12 14:25:43,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:25:43,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:25:43,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:25:43,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:25:43,057 INFO L87 Difference]: Start difference. First operand 12239 states and 12903 transitions. Second operand 8 states. [2020-10-12 14:25:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:25:50,888 INFO L93 Difference]: Finished difference Result 27971 states and 29638 transitions. [2020-10-12 14:25:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 14:25:50,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1310 [2020-10-12 14:25:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:25:50,921 INFO L225 Difference]: With dead ends: 27971 [2020-10-12 14:25:50,921 INFO L226 Difference]: Without dead ends: 16321 [2020-10-12 14:25:50,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-12 14:25:50,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16321 states. [2020-10-12 14:25:51,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16321 to 15300. [2020-10-12 14:25:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15300 states. [2020-10-12 14:25:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15300 states to 15300 states and 16055 transitions. [2020-10-12 14:25:51,176 INFO L78 Accepts]: Start accepts. Automaton has 15300 states and 16055 transitions. Word has length 1310 [2020-10-12 14:25:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:25:51,177 INFO L479 AbstractCegarLoop]: Abstraction has 15300 states and 16055 transitions. [2020-10-12 14:25:51,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:25:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 15300 states and 16055 transitions. [2020-10-12 14:25:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1486 [2020-10-12 14:25:51,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:25:51,222 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2020-10-12 14:25:51,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 14:25:51,222 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:25:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:25:51,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1942217280, now seen corresponding path program 1 times [2020-10-12 14:25:51,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:25:51,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690318861] [2020-10-12 14:25:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:25:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:51,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:51,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:56,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:56,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1509 [2020-10-12 14:25:56,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:25:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-12 14:25:56,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:25:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1077 [2020-10-12 14:25:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 332 [2020-10-12 14:25:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:25:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:56,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:56,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:25:56,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:56,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:25:56,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:25:56,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:25:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:56,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:56,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:56,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 14:25:56,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:56,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 14:25:56,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:57,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 14:25:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:57,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:57,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:57,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 14:25:57,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:25:57,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:57,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-12 14:25:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:57,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:57,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 14:25:57,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:57,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:25:57,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:57,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:57,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:57,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:57,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-12 14:25:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:57,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:57,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 14:25:57,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 14:25:57,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-12 14:25:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:57,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:57,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:57,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 14:25:57,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:57,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-12 14:25:57,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-12 14:25:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:57,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-12 14:25:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:57,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:57,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:57,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:57,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 14:25:57,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:25:57,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 14:25:57,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:25:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 14:25:57,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:25:57,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-12 14:25:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:58,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:58,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-12 14:25:58,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:58,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-12 14:25:58,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:25:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:25:58,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-12 14:25:58,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:25:58,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1394 [2020-10-12 14:25:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:25:58,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:25:58,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:25:58,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:25:58,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:25:58,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 14:25:58,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:25:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:25:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 14:25:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:25:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:25:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4076 backedges. 1591 proven. 277 refuted. 0 times theorem prover too weak. 2208 trivial. 0 not checked. [2020-10-12 14:25:59,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690318861] [2020-10-12 14:25:59,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:25:59,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:25:59,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395330663] [2020-10-12 14:25:59,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:25:59,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:25:59,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:25:59,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:25:59,692 INFO L87 Difference]: Start difference. First operand 15300 states and 16055 transitions. Second operand 8 states. [2020-10-12 14:26:05,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:26:05,384 INFO L93 Difference]: Finished difference Result 30364 states and 31868 transitions. [2020-10-12 14:26:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 14:26:05,385 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1485 [2020-10-12 14:26:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:26:05,407 INFO L225 Difference]: With dead ends: 30364 [2020-10-12 14:26:05,408 INFO L226 Difference]: Without dead ends: 15653 [2020-10-12 14:26:05,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 14:26:05,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15653 states. [2020-10-12 14:26:05,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15653 to 14969. [2020-10-12 14:26:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14969 states. [2020-10-12 14:26:05,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14969 states to 14969 states and 15683 transitions. [2020-10-12 14:26:05,635 INFO L78 Accepts]: Start accepts. Automaton has 14969 states and 15683 transitions. Word has length 1485 [2020-10-12 14:26:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:26:05,637 INFO L479 AbstractCegarLoop]: Abstraction has 14969 states and 15683 transitions. [2020-10-12 14:26:05,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:26:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 14969 states and 15683 transitions. [2020-10-12 14:26:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1639 [2020-10-12 14:26:05,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:26:05,672 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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 14:26:05,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 14:26:05,674 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:26:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:26:05,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1434493217, now seen corresponding path program 1 times [2020-10-12 14:26:05,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:26:05,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589883435] [2020-10-12 14:26:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:26:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:11,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:11,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1662 [2020-10-12 14:26:11,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:26:11,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5150 [2020-10-12 14:26:11,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:26:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-12 14:26:11,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 14:26:11,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:11,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:26:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:11,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:11,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:26:11,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:26:11,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:26:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:11,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:26:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:11,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:11,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 14:26:11,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:11,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 14:26:11,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:26:11,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:11,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:11,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 14:26:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:11,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:11,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:11,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 14:26:11,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 14:26:11,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:26:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:26:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-12 14:26:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:11,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-12 14:26:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:11,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:11,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 14:26:11,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:11,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 14:26:11,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:26:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:26:11,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 14:26:11,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:11,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-12 14:26:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:11,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:11,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 14:26:11,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 14:26:11,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-12 14:26:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:11,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-12 14:26:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:11,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:11,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 14:26:11,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:11,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 14:26:11,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-12 14:26:11,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:11,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:11,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-12 14:26:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:12,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:12,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:12,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 14:26:12,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:12,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 14:26:12,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-12 14:26:12,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:12,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:12,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1332 [2020-10-12 14:26:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:12,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:12,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:12,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-12 14:26:12,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:12,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:26:12,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-12 14:26:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:12,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1547 [2020-10-12 14:26:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:12,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:12,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:26:12,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:12,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:26:12,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:12,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:12,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 14:26:12,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:12,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 337 proven. 590 refuted. 0 times theorem prover too weak. 3743 trivial. 0 not checked. [2020-10-12 14:26:13,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589883435] [2020-10-12 14:26:13,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:26:13,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:26:13,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526833728] [2020-10-12 14:26:13,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:26:13,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:26:13,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:26:13,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:26:13,721 INFO L87 Difference]: Start difference. First operand 14969 states and 15683 transitions. Second operand 7 states. [2020-10-12 14:26:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:26:17,618 INFO L93 Difference]: Finished difference Result 29698 states and 31135 transitions. [2020-10-12 14:26:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:26:17,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1638 [2020-10-12 14:26:17,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:26:17,640 INFO L225 Difference]: With dead ends: 29698 [2020-10-12 14:26:17,640 INFO L226 Difference]: Without dead ends: 15318 [2020-10-12 14:26:17,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:26:17,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15318 states. [2020-10-12 14:26:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15318 to 15308. [2020-10-12 14:26:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15308 states. [2020-10-12 14:26:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15308 states to 15308 states and 16023 transitions. [2020-10-12 14:26:17,845 INFO L78 Accepts]: Start accepts. Automaton has 15308 states and 16023 transitions. Word has length 1638 [2020-10-12 14:26:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:26:17,846 INFO L479 AbstractCegarLoop]: Abstraction has 15308 states and 16023 transitions. [2020-10-12 14:26:17,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:26:17,846 INFO L276 IsEmpty]: Start isEmpty. Operand 15308 states and 16023 transitions. [2020-10-12 14:26:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1641 [2020-10-12 14:26:17,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:26:17,873 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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 14:26:17,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 14:26:17,874 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:26:17,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:26:17,874 INFO L82 PathProgramCache]: Analyzing trace with hash -88034051, now seen corresponding path program 1 times [2020-10-12 14:26:17,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:26:17,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508594602] [2020-10-12 14:26:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:26:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:18,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:18,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:22,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:23,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:23,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1664 [2020-10-12 14:26:23,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:26:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-12 14:26:23,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:26:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 804 [2020-10-12 14:26:23,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-12 14:26:23,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:23,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:26:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:23,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:23,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:26:23,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:23,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:26:23,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:26:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:23,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:26:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:23,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:23,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 14:26:23,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:23,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 14:26:23,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:23,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:23,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:26:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:26:23,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 14:26:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:23,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:23,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-12 14:26:23,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:23,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 14:26:23,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:26:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:23,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:23,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-12 14:26:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 14:26:23,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:26:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:23,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:23,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-12 14:26:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:23,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:23,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 14:26:23,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 14:26:23,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:26:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:26:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-12 14:26:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-12 14:26:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:23,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:24,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:24,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 14:26:24,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:24,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-12 14:26:24,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:26:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:26:24,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-12 14:26:24,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:24,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2020-10-12 14:26:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:24,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:24,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:24,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 14:26:24,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 14:26:24,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-12 14:26:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:24,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1334 [2020-10-12 14:26:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:24,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:24,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-12 14:26:24,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:24,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 14:26:24,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-12 14:26:24,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:24,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:24,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1549 [2020-10-12 14:26:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:26:24,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:26:24,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:26:24,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:26:24,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:26:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:26:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 14:26:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:26:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:26:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4676 backedges. 879 proven. 560 refuted. 0 times theorem prover too weak. 3237 trivial. 0 not checked. [2020-10-12 14:26:26,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508594602] [2020-10-12 14:26:26,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:26:26,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:26:26,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421883273] [2020-10-12 14:26:26,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:26:26,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:26:26,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:26:26,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:26:26,860 INFO L87 Difference]: Start difference. First operand 15308 states and 16023 transitions. Second operand 7 states. [2020-10-12 14:26:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:26:31,018 INFO L93 Difference]: Finished difference Result 30725 states and 32192 transitions. [2020-10-12 14:26:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:26:31,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1640 [2020-10-12 14:26:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:26:31,046 INFO L225 Difference]: With dead ends: 30725 [2020-10-12 14:26:31,047 INFO L226 Difference]: Without dead ends: 16006 [2020-10-12 14:26:31,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 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 14:26:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16006 states. [2020-10-12 14:26:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16006 to 15992. [2020-10-12 14:26:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15992 states. [2020-10-12 14:26:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15992 states to 15992 states and 16729 transitions. [2020-10-12 14:26:31,249 INFO L78 Accepts]: Start accepts. Automaton has 15992 states and 16729 transitions. Word has length 1640 [2020-10-12 14:26:31,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:26:31,250 INFO L479 AbstractCegarLoop]: Abstraction has 15992 states and 16729 transitions. [2020-10-12 14:26:31,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:26:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand 15992 states and 16729 transitions. [2020-10-12 14:26:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1777 [2020-10-12 14:26:31,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:26:31,291 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-12 14:26:31,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 14:26:31,292 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:26:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:26:31,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1411815544, now seen corresponding path program 1 times [2020-10-12 14:26:31,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:26:31,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786608077] [2020-10-12 14:26:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:26:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:26:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:31,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:26:32,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking...