/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/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 21:14:45,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 21:14:45,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 21:14:45,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 21:14:45,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 21:14:45,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 21:14:45,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 21:14:45,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 21:14:45,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 21:14:45,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 21:14:45,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 21:14:45,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 21:14:45,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 21:14:45,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 21:14:45,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 21:14:45,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 21:14:45,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 21:14:45,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 21:14:45,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 21:14:45,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 21:14:45,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 21:14:45,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 21:14:45,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 21:14:45,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 21:14:45,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 21:14:45,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 21:14:45,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 21:14:45,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 21:14:45,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 21:14:45,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 21:14:45,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 21:14:45,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 21:14:45,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 21:14:45,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 21:14:45,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 21:14:45,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 21:14:45,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 21:14:45,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 21:14:45,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 21:14:45,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 21:14:45,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 21:14:45,412 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 21:14:45,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 21:14:45,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 21:14:45,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 21:14:45,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 21:14:45,451 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 21:14:45,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 21:14:45,452 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 21:14:45,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 21:14:45,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 21:14:45,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 21:14:45,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 21:14:45,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 21:14:45,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 21:14:45,454 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 21:14:45,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 21:14:45,454 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 21:14:45,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 21:14:45,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 21:14:45,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 21:14:45,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 21:14:45,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 21:14:45,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:14:45,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 21:14:45,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 21:14:45,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 21:14:45,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 21:14:45,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 21:14:45,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 21:14:45,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 21:14:45,457 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 21:14:45,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 21:14:45,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 21:14:45,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 21:14:45,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 21:14:45,801 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 21:14:45,801 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-10-12 21:14:45,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fcf01649/44e18277468a432c80868d860a5a928d/FLAG48432056c [2020-10-12 21:14:46,390 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 21:14:46,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-10-12 21:14:46,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fcf01649/44e18277468a432c80868d860a5a928d/FLAG48432056c [2020-10-12 21:14:46,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fcf01649/44e18277468a432c80868d860a5a928d [2020-10-12 21:14:46,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 21:14:46,752 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 21:14:46,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 21:14:46,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 21:14:46,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 21:14:46,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:14:46" (1/1) ... [2020-10-12 21:14:46,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:46, skipping insertion in model container [2020-10-12 21:14:46,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:14:46" (1/1) ... [2020-10-12 21:14:46,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 21:14:46,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 21:14:46,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:14:46,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 21:14:47,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:14:47,028 INFO L208 MainTranslator]: Completed translation [2020-10-12 21:14:47,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:47 WrapperNode [2020-10-12 21:14:47,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 21:14:47,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 21:14:47,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 21:14:47,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 21:14:47,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:47" (1/1) ... [2020-10-12 21:14:47,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:47" (1/1) ... [2020-10-12 21:14:47,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:47" (1/1) ... [2020-10-12 21:14:47,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:47" (1/1) ... [2020-10-12 21:14:47,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:47" (1/1) ... [2020-10-12 21:14:47,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:47" (1/1) ... [2020-10-12 21:14:47,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:47" (1/1) ... [2020-10-12 21:14:47,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 21:14:47,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 21:14:47,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 21:14:47,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 21:14:47,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:47" (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 21:14:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 21:14:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 21:14:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 21:14:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 21:14:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-12 21:14:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 21:14:47,210 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 21:14:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 21:14:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 21:14:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 21:14:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 21:14:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 21:14:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 21:14:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 21:14:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 21:14:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 21:14:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 21:14:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 21:14:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 21:14:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 21:14:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 21:14:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 21:14:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 21:14:47,540 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 21:14:47,540 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 21:14:47,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:14:47 BoogieIcfgContainer [2020-10-12 21:14:47,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 21:14:47,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 21:14:47,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 21:14:47,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 21:14:47,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:14:46" (1/3) ... [2020-10-12 21:14:47,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91aa9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:14:47, skipping insertion in model container [2020-10-12 21:14:47,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:14:47" (2/3) ... [2020-10-12 21:14:47,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91aa9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:14:47, skipping insertion in model container [2020-10-12 21:14:47,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:14:47" (3/3) ... [2020-10-12 21:14:47,552 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-10-12 21:14:47,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 21:14:47,570 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 21:14:47,584 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 21:14:47,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 21:14:47,608 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 21:14:47,608 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 21:14:47,608 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 21:14:47,609 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 21:14:47,609 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 21:14:47,609 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 21:14:47,609 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 21:14:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-12 21:14:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 21:14:47,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:14:47,641 INFO L422 BasicCegarLoop]: trace histogram [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 21:14:47,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:14:47,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:14:47,647 INFO L82 PathProgramCache]: Analyzing trace with hash -640327596, now seen corresponding path program 1 times [2020-10-12 21:14:47,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:14:47,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746674334] [2020-10-12 21:14:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:14:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:47,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:47,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:48,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:48,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 21:14:48,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:14:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-12 21:14:48,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:14:48,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 21:14:48,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 21:14:48,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 21:14:48,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:14:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:48,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:48,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:48,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:14:48,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:14:48,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:48,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:48,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:14:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:14:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:48,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:48,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:48,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:48,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:14:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:14:48,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:48,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:48,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:14:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:48,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:14:48,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:14:48,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 21:14:48,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:14:48,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:14:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:48,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:48,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:14:48,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:48,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:14:48,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:48,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 21:14:48,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746674334] [2020-10-12 21:14:48,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:14:48,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 21:14:48,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315996524] [2020-10-12 21:14:48,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 21:14:48,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:14:48,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 21:14:48,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 21:14:48,463 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 8 states. [2020-10-12 21:14:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:14:48,985 INFO L93 Difference]: Finished difference Result 99 states and 131 transitions. [2020-10-12 21:14:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:14:48,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-12 21:14:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:14:48,998 INFO L225 Difference]: With dead ends: 99 [2020-10-12 21:14:48,998 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 21:14:49,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-12 21:14:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 21:14:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-12 21:14:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 21:14:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-12 21:14:49,057 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 30 [2020-10-12 21:14:49,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:14:49,058 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-12 21:14:49,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 21:14:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-12 21:14:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 21:14:49,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:14:49,061 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:14:49,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 21:14:49,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:14:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:14:49,062 INFO L82 PathProgramCache]: Analyzing trace with hash 389656800, now seen corresponding path program 1 times [2020-10-12 21:14:49,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:14:49,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078492352] [2020-10-12 21:14:49,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:14:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:49,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:49,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:49,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 21:14:49,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:14:49,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-12 21:14:49,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:14:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:14:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 21:14:49,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:14:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:49,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:49,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:14:49,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:14:49,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:49,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:49,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:14:49,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:14:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:49,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:49,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:49,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:49,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:14:49,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:49,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:14:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:49,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:49,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:49,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:14:49,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:14:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:14:49,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:14:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:49,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:49,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:49,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:14:49,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:14:49,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:49,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:14:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:14:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 21:14:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:49,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:49,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:49,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:49,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 21:14:49,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:14:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:14:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 21:14:50,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078492352] [2020-10-12 21:14:50,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:14:50,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 21:14:50,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820060919] [2020-10-12 21:14:50,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 21:14:50,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:14:50,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 21:14:50,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 21:14:50,049 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 13 states. [2020-10-12 21:14:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:14:50,641 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 21:14:50,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 21:14:50,642 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-12 21:14:50,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:14:50,646 INFO L225 Difference]: With dead ends: 68 [2020-10-12 21:14:50,646 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 21:14:50,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2020-10-12 21:14:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 21:14:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-12 21:14:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 21:14:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-12 21:14:50,662 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 33 [2020-10-12 21:14:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:14:50,663 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-12 21:14:50,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 21:14:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-12 21:14:50,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 21:14:50,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:14:50,665 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:14:50,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 21:14:50,666 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:14:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:14:50,666 INFO L82 PathProgramCache]: Analyzing trace with hash 570145691, now seen corresponding path program 1 times [2020-10-12 21:14:50,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:14:50,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445724769] [2020-10-12 21:14:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:14:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:50,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:50,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:51,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:51,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 21:14:51,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:14:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-12 21:14:51,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 21:14:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 21:14:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 21:14:51,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:51,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:14:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:51,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:51,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:14:51,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:51,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:14:51,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:51,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:51,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:51,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:14:51,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:14:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:51,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:51,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:51,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:51,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:14:51,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:51,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:51,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:14:51,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:14:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:51,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:51,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:51,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:14:51,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:51,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:14:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:51,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:51,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:51,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:14:51,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:51,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:14:51,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:51,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:14:51,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:14:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:51,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:51,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:51,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:51,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:14:51,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:51,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:14:51,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:51,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:14:51,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:51,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:14:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:51,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:51,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:51,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:51,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:14:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:14:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:14:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 21:14:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 21:14:52,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445724769] [2020-10-12 21:14:52,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:14:52,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 21:14:52,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784083257] [2020-10-12 21:14:52,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 21:14:52,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:14:52,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 21:14:52,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:14:52,006 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 11 states. [2020-10-12 21:14:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:14:52,585 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2020-10-12 21:14:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 21:14:52,586 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-12 21:14:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:14:52,588 INFO L225 Difference]: With dead ends: 88 [2020-10-12 21:14:52,588 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 21:14:52,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-12 21:14:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 21:14:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2020-10-12 21:14:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-12 21:14:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2020-10-12 21:14:52,605 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 45 [2020-10-12 21:14:52,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:14:52,606 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2020-10-12 21:14:52,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 21:14:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2020-10-12 21:14:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 21:14:52,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:14:52,608 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:14:52,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 21:14:52,609 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:14:52,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:14:52,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1379492317, now seen corresponding path program 1 times [2020-10-12 21:14:52,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:14:52,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584512255] [2020-10-12 21:14:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:14:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:52,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:52,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:53,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:53,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 21:14:53,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:14:53,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-12 21:14:53,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:53,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 21:14:53,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 21:14:53,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 21:14:53,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:14:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:53,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:53,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:53,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:14:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:14:53,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:14:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:14:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:53,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:53,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:53,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:14:53,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:53,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:14:53,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:14:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:53,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:53,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:53,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:53,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:14:53,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:53,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:53,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:53,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:53,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:14:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:53,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:53,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:53,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:14:53,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:53,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:14:53,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:53,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:53,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:53,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:53,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:14:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:14:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:53,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:53,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:53,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:14:53,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:14:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:14:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:53,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:14:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:53,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:53,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:53,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:53,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:14:53,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:53,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:14:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:14:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:14:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 21:14:53,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584512255] [2020-10-12 21:14:53,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:14:53,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 21:14:53,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625353125] [2020-10-12 21:14:53,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 21:14:53,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:14:53,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 21:14:53,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:14:53,345 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand 11 states. [2020-10-12 21:14:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:14:53,896 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2020-10-12 21:14:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 21:14:53,899 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-12 21:14:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:14:53,901 INFO L225 Difference]: With dead ends: 109 [2020-10-12 21:14:53,901 INFO L226 Difference]: Without dead ends: 107 [2020-10-12 21:14:53,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-12 21:14:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-12 21:14:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-10-12 21:14:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 21:14:53,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2020-10-12 21:14:53,935 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 45 [2020-10-12 21:14:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:14:53,936 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2020-10-12 21:14:53,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 21:14:53,936 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2020-10-12 21:14:53,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 21:14:53,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:14:53,941 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:14:53,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 21:14:53,942 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:14:53,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:14:53,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1445821128, now seen corresponding path program 1 times [2020-10-12 21:14:53,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:14:53,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003001048] [2020-10-12 21:14:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:14:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:53,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:54,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:54,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:58,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:58,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 21:14:58,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:14:58,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4048 [2020-10-12 21:14:58,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 21:14:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:14:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 21:14:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:58,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:14:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:58,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:58,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:14:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:14:58,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:58,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:58,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:14:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:58,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:58,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:58,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:14:58,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:14:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:14:58,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:14:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:58,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:58,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:58,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:58,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:14:58,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:14:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:14:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:58,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:14:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:58,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:58,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:58,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:14:58,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:14:58,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:14:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:14:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:14:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:58,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:58,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:58,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:58,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:58,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:14:58,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:14:58,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:58,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:14:58,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:58,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:14:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:58,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:58,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:58,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:58,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:14:58,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:14:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:58,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:14:58,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:58,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:14:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:14:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:14:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:14:58,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:14:58,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:14:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 21:14:58,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:14:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:14:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:14:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:14:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:14:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 21:14:58,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003001048] [2020-10-12 21:14:58,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:14:58,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 21:14:58,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534418027] [2020-10-12 21:14:58,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 21:14:58,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:14:58,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 21:14:58,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-12 21:14:58,759 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand 17 states. [2020-10-12 21:15:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:00,161 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-10-12 21:15:00,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 21:15:00,162 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48 [2020-10-12 21:15:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:00,164 INFO L225 Difference]: With dead ends: 117 [2020-10-12 21:15:00,164 INFO L226 Difference]: Without dead ends: 115 [2020-10-12 21:15:00,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 21:15:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-12 21:15:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 103. [2020-10-12 21:15:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 21:15:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2020-10-12 21:15:00,200 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 48 [2020-10-12 21:15:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:00,200 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2020-10-12 21:15:00,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 21:15:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2020-10-12 21:15:00,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 21:15:00,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:00,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:00,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 21:15:00,203 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:00,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:00,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2146885706, now seen corresponding path program 1 times [2020-10-12 21:15:00,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:00,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159411906] [2020-10-12 21:15:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:00,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:00,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:00,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:02,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:02,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 21:15:02,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:15:02,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2287 [2020-10-12 21:15:02,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 21:15:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:15:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 21:15:02,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:03,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:03,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:03,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:03,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:03,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:03,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:03,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:03,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:03,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:03,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:03,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:03,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:03,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:03,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:03,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:03,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:03,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:03,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:03,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:03,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:15:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:03,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:03,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:03,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:03,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:03,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:03,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:03,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:15:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:03,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:03,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:03,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:03,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:03,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:03,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:03,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:15:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:03,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:03,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:03,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:15:03,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:03,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:15:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:03,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:03,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:03,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:03,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:03,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 21:15:03,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:15:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:03,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 21:15:03,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159411906] [2020-10-12 21:15:03,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:03,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 21:15:03,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232006677] [2020-10-12 21:15:03,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 21:15:03,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:03,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 21:15:03,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-12 21:15:03,330 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand 18 states. [2020-10-12 21:15:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:04,831 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2020-10-12 21:15:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 21:15:04,833 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-10-12 21:15:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:04,835 INFO L225 Difference]: With dead ends: 123 [2020-10-12 21:15:04,835 INFO L226 Difference]: Without dead ends: 121 [2020-10-12 21:15:04,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=170, Invalid=1020, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 21:15:04,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-12 21:15:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2020-10-12 21:15:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 21:15:04,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2020-10-12 21:15:04,854 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 48 [2020-10-12 21:15:04,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:04,854 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2020-10-12 21:15:04,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 21:15:04,854 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2020-10-12 21:15:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 21:15:04,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:04,856 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:15:04,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 21:15:04,857 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:04,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:04,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2063445105, now seen corresponding path program 1 times [2020-10-12 21:15:04,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:04,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660754561] [2020-10-12 21:15:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:04,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:04,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:05,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 21:15:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:15:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 21:15:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 21:15:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:15:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 21:15:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:09,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:09,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:09,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:09,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:09,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:09,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:09,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:09,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:09,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:09,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:09,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:09,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:09,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:09,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:09,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:09,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:09,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:09,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:10,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:15:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:10,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:10,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:10,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:10,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:10,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 21:15:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:10,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:10,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:10,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 21:15:10,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:10,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-12 21:15:10,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 21:15:10,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:10,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:15:10,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:15:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:10,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:10,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:10,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:10,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:10,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:10,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:10,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:10,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:10,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:10,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 21:15:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:10,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:10,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:10,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:10,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:15:10,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:10,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:10,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 21:15:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:10,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:10,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:10,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:10,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:10,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 21:15:10,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:15:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:10,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 21:15:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:10,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:10,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:10,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:10,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:10,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:15:10,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:10,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:10,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:10,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:10,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 21:15:11,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660754561] [2020-10-12 21:15:11,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:11,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 21:15:11,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799953977] [2020-10-12 21:15:11,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 21:15:11,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:11,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 21:15:11,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-12 21:15:11,019 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand 20 states. [2020-10-12 21:15:12,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:12,857 INFO L93 Difference]: Finished difference Result 156 states and 198 transitions. [2020-10-12 21:15:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 21:15:12,858 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-12 21:15:12,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:12,860 INFO L225 Difference]: With dead ends: 156 [2020-10-12 21:15:12,860 INFO L226 Difference]: Without dead ends: 143 [2020-10-12 21:15:12,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 21:15:12,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-12 21:15:12,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 105. [2020-10-12 21:15:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 21:15:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2020-10-12 21:15:12,879 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 57 [2020-10-12 21:15:12,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:12,880 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2020-10-12 21:15:12,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 21:15:12,880 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2020-10-12 21:15:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 21:15:12,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:12,881 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:15:12,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 21:15:12,882 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:12,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:12,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1245796655, now seen corresponding path program 1 times [2020-10-12 21:15:12,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:12,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945769026] [2020-10-12 21:15:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:12,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:13,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:17,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:17,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 21:15:17,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:15:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:15:17,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 21:15:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 21:15:17,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 21:15:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:18,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:18,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:18,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:18,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:18,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:18,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:18,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:18,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:15:18,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:18,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:18,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:18,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:18,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:18,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:18,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:15:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:18,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:18,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:18,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:18,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:18,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 21:15:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:18,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:18,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:18,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 21:15:18,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-10-12 21:15:18,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 21:15:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:18,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:15:18,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:19,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:15:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:19,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:19,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:19,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:19,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:19,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 21:15:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:19,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:19,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:19,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:19,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:15:19,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:19,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:19,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:19,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 21:15:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:19,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:19,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:19,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 21:15:19,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:15:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:19,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 21:15:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:19,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:19,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:19,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:19,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:15:19,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:19,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:19,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:19,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:19,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 21:15:19,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945769026] [2020-10-12 21:15:19,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:19,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 21:15:19,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412411474] [2020-10-12 21:15:19,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 21:15:19,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 21:15:19,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-12 21:15:19,437 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand 21 states. [2020-10-12 21:15:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:21,061 INFO L93 Difference]: Finished difference Result 154 states and 194 transitions. [2020-10-12 21:15:21,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 21:15:21,063 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-12 21:15:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:21,065 INFO L225 Difference]: With dead ends: 154 [2020-10-12 21:15:21,068 INFO L226 Difference]: Without dead ends: 137 [2020-10-12 21:15:21,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 21:15:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-12 21:15:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2020-10-12 21:15:21,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 21:15:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2020-10-12 21:15:21,102 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 57 [2020-10-12 21:15:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:21,102 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2020-10-12 21:15:21,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 21:15:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2020-10-12 21:15:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 21:15:21,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:21,105 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-12 21:15:21,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 21:15:21,105 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:21,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:21,105 INFO L82 PathProgramCache]: Analyzing trace with hash -419573053, now seen corresponding path program 2 times [2020-10-12 21:15:21,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:21,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170587228] [2020-10-12 21:15:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:21,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 21:15:26,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:15:26,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:15:26,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 21:15:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 21:15:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 21:15:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:26,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:26,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:26,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:26,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:26,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:26,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:26,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:26,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:26,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:26,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:26,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:26,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:26,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:15:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:26,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:26,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:26,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:26,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:15:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:26,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:26,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:26,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:15:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:26,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:26,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:26,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:26,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:26,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:26,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:26,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 21:15:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:26,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:26,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:26,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:26,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:26,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 21:15:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:26,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:26,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:26,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:26,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 21:15:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:26,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:26,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:26,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:26,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 21:15:26,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:26,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:15:26,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:26,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:26,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 21:15:26,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170587228] [2020-10-12 21:15:26,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:26,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 21:15:26,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785937800] [2020-10-12 21:15:26,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 21:15:26,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:26,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 21:15:26,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-12 21:15:26,841 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 20 states. [2020-10-12 21:15:27,933 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-12 21:15:28,291 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-10-12 21:15:29,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:29,175 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2020-10-12 21:15:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 21:15:29,176 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2020-10-12 21:15:29,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:29,179 INFO L225 Difference]: With dead ends: 137 [2020-10-12 21:15:29,179 INFO L226 Difference]: Without dead ends: 133 [2020-10-12 21:15:29,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 21:15:29,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-12 21:15:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 118. [2020-10-12 21:15:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-12 21:15:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 143 transitions. [2020-10-12 21:15:29,197 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 143 transitions. Word has length 63 [2020-10-12 21:15:29,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:29,198 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 143 transitions. [2020-10-12 21:15:29,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 21:15:29,198 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 143 transitions. [2020-10-12 21:15:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 21:15:29,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:29,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-12 21:15:29,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 21:15:29,200 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:29,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:29,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1120637631, now seen corresponding path program 1 times [2020-10-12 21:15:29,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:29,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800223272] [2020-10-12 21:15:29,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:29,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:29,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 21:15:34,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:15:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 21:15:34,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 21:15:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 21:15:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 21:15:34,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:34,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:34,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:34,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:34,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:34,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:34,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:15:34,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:34,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:34,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:15:34,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:34,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:15:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:34,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:34,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:34,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:15:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:34,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:34,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:34,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:15:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:34,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:34,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:34,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:34,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:34,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 21:15:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:34,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:34,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:34,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 21:15:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:34,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 21:15:34,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:34,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 21:15:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:34,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:34,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:34,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:34,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 21:15:34,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:15:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:34,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 21:15:34,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800223272] [2020-10-12 21:15:34,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:34,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 21:15:34,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232773498] [2020-10-12 21:15:34,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 21:15:34,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:34,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 21:15:34,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-10-12 21:15:34,995 INFO L87 Difference]: Start difference. First operand 118 states and 143 transitions. Second operand 22 states. [2020-10-12 21:15:35,778 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-12 21:15:35,971 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2020-10-12 21:15:36,794 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-12 21:15:37,051 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-10-12 21:15:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:37,968 INFO L93 Difference]: Finished difference Result 141 states and 171 transitions. [2020-10-12 21:15:37,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 21:15:37,969 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 63 [2020-10-12 21:15:37,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:37,971 INFO L225 Difference]: With dead ends: 141 [2020-10-12 21:15:37,971 INFO L226 Difference]: Without dead ends: 139 [2020-10-12 21:15:37,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=304, Invalid=1588, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 21:15:37,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-12 21:15:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2020-10-12 21:15:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-12 21:15:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 148 transitions. [2020-10-12 21:15:37,990 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 148 transitions. Word has length 63 [2020-10-12 21:15:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:37,995 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 148 transitions. [2020-10-12 21:15:37,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 21:15:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 148 transitions. [2020-10-12 21:15:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 21:15:37,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:37,999 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-12 21:15:37,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 21:15:37,999 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:38,000 INFO L82 PathProgramCache]: Analyzing trace with hash -481612667, now seen corresponding path program 2 times [2020-10-12 21:15:38,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:38,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447898584] [2020-10-12 21:15:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:43,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 21:15:43,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:15:43,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:15:43,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 21:15:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:15:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 21:15:43,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:43,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:43,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:43,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:43,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:43,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:43,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:43,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:43,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:15:43,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:43,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:43,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:43,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:43,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:43,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:43,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:43,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:43,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:43,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:43,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:15:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:43,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:43,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:43,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:43,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:43,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:43,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:43,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:15:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:43,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:43,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:43,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:43,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:43,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:43,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:43,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:15:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:43,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:43,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:43,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:43,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:43,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 21:15:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:43,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:43,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:43,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:43,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:43,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:43,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:43,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 21:15:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:43,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:43,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:43,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:43,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:43,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 21:15:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:43,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:43,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:43,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:43,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 21:15:43,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:15:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:43,968 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 21:15:43,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447898584] [2020-10-12 21:15:43,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:43,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 21:15:43,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107814955] [2020-10-12 21:15:43,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 21:15:43,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:43,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 21:15:43,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-12 21:15:43,970 INFO L87 Difference]: Start difference. First operand 120 states and 148 transitions. Second operand 21 states. [2020-10-12 21:15:45,568 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-12 21:15:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:46,673 INFO L93 Difference]: Finished difference Result 156 states and 193 transitions. [2020-10-12 21:15:46,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 21:15:46,675 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 63 [2020-10-12 21:15:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:46,677 INFO L225 Difference]: With dead ends: 156 [2020-10-12 21:15:46,677 INFO L226 Difference]: Without dead ends: 152 [2020-10-12 21:15:46,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=214, Invalid=1508, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 21:15:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-12 21:15:46,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 137. [2020-10-12 21:15:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-12 21:15:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 171 transitions. [2020-10-12 21:15:46,696 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 171 transitions. Word has length 63 [2020-10-12 21:15:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:46,697 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 171 transitions. [2020-10-12 21:15:46,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 21:15:46,697 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 171 transitions. [2020-10-12 21:15:46,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 21:15:46,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:46,698 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-12 21:15:46,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 21:15:46,698 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:46,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:46,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1182677245, now seen corresponding path program 2 times [2020-10-12 21:15:46,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:46,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380957067] [2020-10-12 21:15:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:51,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:51,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 21:15:51,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:15:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 21:15:51,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 21:15:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 21:15:51,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 21:15:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:52,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:52,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:52,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:52,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:52,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:52,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:52,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:52,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:52,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:52,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:52,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:52,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:52,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:52,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:15:52,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:52,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:52,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:15:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:52,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:52,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:52,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:52,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:52,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:15:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:52,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:52,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:52,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:52,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:15:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:52,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:52,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:52,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:52,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:15:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:52,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:52,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:52,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:52,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:52,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:52,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:52,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 21:15:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:52,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:52,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:52,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:52,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:52,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:52,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 21:15:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:52,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:52,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:52,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:52,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:15:52,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:15:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:52,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:52,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 21:15:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:52,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:52,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:15:52,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:15:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 21:15:52,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380957067] [2020-10-12 21:15:52,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:52,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 21:15:52,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934355918] [2020-10-12 21:15:52,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 21:15:52,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:52,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 21:15:52,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-12 21:15:52,405 INFO L87 Difference]: Start difference. First operand 137 states and 171 transitions. Second operand 21 states. [2020-10-12 21:15:53,276 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-12 21:15:53,731 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-10-12 21:15:53,974 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 21:15:54,156 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-12 21:15:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:55,076 INFO L93 Difference]: Finished difference Result 160 states and 197 transitions. [2020-10-12 21:15:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 21:15:55,078 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 63 [2020-10-12 21:15:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:55,079 INFO L225 Difference]: With dead ends: 160 [2020-10-12 21:15:55,079 INFO L226 Difference]: Without dead ends: 158 [2020-10-12 21:15:55,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=290, Invalid=1516, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 21:15:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-12 21:15:55,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 139. [2020-10-12 21:15:55,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-12 21:15:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 174 transitions. [2020-10-12 21:15:55,102 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 174 transitions. Word has length 63 [2020-10-12 21:15:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:55,102 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 174 transitions. [2020-10-12 21:15:55,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 21:15:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 174 transitions. [2020-10-12 21:15:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 21:15:55,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:55,104 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:55,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 21:15:55,104 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:55,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:55,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1311491865, now seen corresponding path program 1 times [2020-10-12 21:15:55,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:55,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939057015] [2020-10-12 21:15:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:55,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:55,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:00,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:00,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 21:16:00,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 21:16:00,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:16:00,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:00,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 21:16:00,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 21:16:00,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 21:16:00,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:16:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:00,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:00,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:00,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:00,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:00,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:00,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:16:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:00,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:00,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:00,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:00,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:00,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:16:00,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:00,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:00,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:16:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:00,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:00,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:00,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:00,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:16:00,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:16:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:00,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:00,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:00,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:00,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:00,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:00,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:16:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:00,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:00,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:00,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:00,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:00,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:00,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:00,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:00,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:16:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:00,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:00,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:00,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:16:00,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:16:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:00,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:16:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:00,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:00,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 21:16:00,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:00,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 21:16:00,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 21:16:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:16:00,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:01,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:16:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:01,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:01,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:01,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:01,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:01,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:16:01,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:01,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:01,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 21:16:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:01,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:01,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:01,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:01,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:01,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 21:16:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:01,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:01,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:01,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:01,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 21:16:01,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:16:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:01,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:01,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 21:16:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:01,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:01,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:01,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:01,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:01,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:16:01,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 21:16:01,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939057015] [2020-10-12 21:16:01,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:16:01,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 21:16:01,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154452119] [2020-10-12 21:16:01,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 21:16:01,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:16:01,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 21:16:01,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-12 21:16:01,191 INFO L87 Difference]: Start difference. First operand 139 states and 174 transitions. Second operand 23 states. [2020-10-12 21:16:01,986 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-12 21:16:02,188 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-12 21:16:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:16:03,679 INFO L93 Difference]: Finished difference Result 206 states and 268 transitions. [2020-10-12 21:16:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 21:16:03,680 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 72 [2020-10-12 21:16:03,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:16:03,681 INFO L225 Difference]: With dead ends: 206 [2020-10-12 21:16:03,681 INFO L226 Difference]: Without dead ends: 204 [2020-10-12 21:16:03,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=244, Invalid=1562, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 21:16:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-12 21:16:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 150. [2020-10-12 21:16:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-12 21:16:03,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 186 transitions. [2020-10-12 21:16:03,707 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 186 transitions. Word has length 72 [2020-10-12 21:16:03,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:16:03,707 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 186 transitions. [2020-10-12 21:16:03,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 21:16:03,708 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 186 transitions. [2020-10-12 21:16:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 21:16:03,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:16:03,709 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:16:03,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 21:16:03,709 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:16:03,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:16:03,710 INFO L82 PathProgramCache]: Analyzing trace with hash -493843415, now seen corresponding path program 1 times [2020-10-12 21:16:03,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:16:03,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562188307] [2020-10-12 21:16:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:16:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:03,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:04,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:04,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:08,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:08,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 21:16:08,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:16:08,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:16:08,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:08,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 21:16:08,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 21:16:08,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 21:16:08,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:16:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:09,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:09,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:09,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:09,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:09,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:09,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:09,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:09,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:09,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:09,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:09,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:16:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:09,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:09,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:09,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:09,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:09,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:16:09,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:09,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:09,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:16:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:09,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:09,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:09,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:09,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:09,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:09,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:16:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:09,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:09,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:09,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:09,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:09,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:09,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:16:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:09,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:09,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:09,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:09,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:09,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:09,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:09,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:16:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:09,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:09,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:09,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:09,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:09,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:09,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:09,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:09,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:09,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:09,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:09,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:16:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:09,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:09,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:09,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 21:16:09,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:16:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-12 21:16:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 21:16:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:09,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:16:09,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:16:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:10,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:10,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:10,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:16:10,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:10,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:10,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 21:16:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:10,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:10,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:10,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:10,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:10,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:16:10,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:16:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:10,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 21:16:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:10,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:10,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:10,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:10,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 21:16:10,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:16:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:10,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:10,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 21:16:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:10,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:10,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:10,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 21:16:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:16:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 21:16:10,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562188307] [2020-10-12 21:16:10,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:16:10,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 21:16:10,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732908880] [2020-10-12 21:16:10,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 21:16:10,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:16:10,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 21:16:10,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2020-10-12 21:16:10,527 INFO L87 Difference]: Start difference. First operand 150 states and 186 transitions. Second operand 25 states. [2020-10-12 21:16:12,392 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-12 21:16:12,604 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-12 21:16:12,888 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-10-12 21:16:13,138 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-10-12 21:16:14,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:16:14,135 INFO L93 Difference]: Finished difference Result 210 states and 273 transitions. [2020-10-12 21:16:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 21:16:14,136 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 72 [2020-10-12 21:16:14,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:16:14,138 INFO L225 Difference]: With dead ends: 210 [2020-10-12 21:16:14,138 INFO L226 Difference]: Without dead ends: 208 [2020-10-12 21:16:14,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=301, Invalid=2249, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 21:16:14,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-12 21:16:14,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 157. [2020-10-12 21:16:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 21:16:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 194 transitions. [2020-10-12 21:16:14,167 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 194 transitions. Word has length 72 [2020-10-12 21:16:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:16:14,168 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 194 transitions. [2020-10-12 21:16:14,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 21:16:14,168 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 194 transitions. [2020-10-12 21:16:14,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 21:16:14,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:16:14,169 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:16:14,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 21:16:14,170 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:16:14,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:16:14,170 INFO L82 PathProgramCache]: Analyzing trace with hash -467486363, now seen corresponding path program 2 times [2020-10-12 21:16:14,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:16:14,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458284725] [2020-10-12 21:16:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:16:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:14,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:14,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:15,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:15,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:15,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:19,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:19,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 21:16:19,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:16:19,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 21:16:19,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:19,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 21:16:19,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:16:19,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 21:16:19,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:16:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:19,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:19,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:19,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:19,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:16:19,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:19,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:19,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:19,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:16:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:19,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:19,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:19,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:19,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 21:16:19,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:16:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:16:19,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:19,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-12 21:16:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:19,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:19,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:19,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:19,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:16:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:16:19,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:19,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 21:16:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:19,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:19,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:16:19,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:19,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:16:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:16:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:19,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:19,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:19,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:19,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 21:16:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:19,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:19,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:16:19,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:16:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:16:19,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:16:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:19,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:16:19,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:16:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:16:19,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:19,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:16:19,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:16:19,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 21:16:19,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:16:19,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-12 21:16:19,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:16:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 21:16:19,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:16:19,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:16:19,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:16:19,937 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 4: A-local: [], B-local: [(check_~x1~0_19 Int)]. [2020-10-12 21:16:19,938 ERROR L253 erpolLogProxyWrapper]: Interpolant 4 not inductive [2020-10-12 21:16:19,939 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 5: A-local: [], B-local: [(check_~x1~0_19 Int)]. [2020-10-12 21:16:19,941 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 6: A-local: [], B-local: [(check_~x1~0_19 Int)]. [2020-10-12 21:16:19,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 21:16:19,952 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-12 21:16:19,957 INFO L168 Benchmark]: Toolchain (without parser) took 93205.78 ms. Allocated memory was 148.9 MB in the beginning and 844.6 MB in the end (delta: 695.7 MB). Free memory was 103.2 MB in the beginning and 203.9 MB in the end (delta: -100.7 MB). Peak memory consumption was 595.0 MB. Max. memory is 7.1 GB. [2020-10-12 21:16:19,958 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 21:16:19,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.78 ms. Allocated memory is still 148.9 MB. Free memory was 103.0 MB in the beginning and 92.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-12 21:16:19,959 INFO L168 Benchmark]: Boogie Preprocessor took 120.68 ms. Allocated memory was 148.9 MB in the beginning and 203.9 MB in the end (delta: 55.1 MB). Free memory was 92.4 MB in the beginning and 181.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-12 21:16:19,960 INFO L168 Benchmark]: RCFGBuilder took 394.34 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 162.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-10-12 21:16:19,961 INFO L168 Benchmark]: TraceAbstraction took 92409.95 ms. Allocated memory was 203.9 MB in the beginning and 844.6 MB in the end (delta: 640.7 MB). Free memory was 162.4 MB in the beginning and 203.9 MB in the end (delta: -41.5 MB). Peak memory consumption was 599.2 MB. Max. memory is 7.1 GB. [2020-10-12 21:16:19,964 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.78 ms. Allocated memory is still 148.9 MB. Free memory was 103.0 MB in the beginning and 92.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.68 ms. Allocated memory was 148.9 MB in the beginning and 203.9 MB in the end (delta: 55.1 MB). Free memory was 92.4 MB in the beginning and 181.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 394.34 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 162.4 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 92409.95 ms. Allocated memory was 203.9 MB in the beginning and 844.6 MB in the end (delta: 640.7 MB). Free memory was 162.4 MB in the beginning and 203.9 MB in the end (delta: -41.5 MB). Peak memory consumption was 599.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...