/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:13:54,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:13:54,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:13:54,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:13:54,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:13:54,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:13:54,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:13:54,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:13:54,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:13:54,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:13:54,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:13:54,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:13:54,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:13:54,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:13:54,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:13:54,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:13:54,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:13:54,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:13:54,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:13:54,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:13:54,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:13:54,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:13:54,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:13:54,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:13:54,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:13:54,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:13:54,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:13:54,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:13:54,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:13:54,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:13:54,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:13:54,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:13:54,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:13:54,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:13:54,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:13:54,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:13:54,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:13:54,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:13:54,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:13:54,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:13:54,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:13:54,780 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 [2020-10-13 09:13:54,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:13:54,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:13:54,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:13:54,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:13:54,808 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:13:54,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:13:54,808 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:13:54,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:13:54,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:13:54,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:13:54,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:13:54,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:13:54,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:13:54,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:13:54,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:13:54,810 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:13:54,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:13:54,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:13:54,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:13:54,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:13:54,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:13:54,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:13:54,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:13:54,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:13:54,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:13:54,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:13:54,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:13:54,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:13:54,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:13:54,813 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:13:55,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:13:55,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:13:55,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:13:55,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:13:55,118 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:13:55,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label05.c [2020-10-13 09:13:55,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77213532d/b68421d4bdbd4c9488004b8732980b1f/FLAG93cb4fca2 [2020-10-13 09:13:55,944 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:13:55,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label05.c [2020-10-13 09:13:55,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77213532d/b68421d4bdbd4c9488004b8732980b1f/FLAG93cb4fca2 [2020-10-13 09:13:56,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77213532d/b68421d4bdbd4c9488004b8732980b1f [2020-10-13 09:13:56,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:13:56,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:13:56,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:13:56,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:13:56,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:13:56,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:56" (1/1) ... [2020-10-13 09:13:56,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66948a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:56, skipping insertion in model container [2020-10-13 09:13:56,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:56" (1/1) ... [2020-10-13 09:13:56,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:13:56,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:13:56,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:13:56,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:13:57,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:13:57,264 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:13:57,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:57 WrapperNode [2020-10-13 09:13:57,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:13:57,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:13:57,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:13:57,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:13:57,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:57" (1/1) ... [2020-10-13 09:13:57,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:57" (1/1) ... [2020-10-13 09:13:57,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:57" (1/1) ... [2020-10-13 09:13:57,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:57" (1/1) ... [2020-10-13 09:13:57,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:57" (1/1) ... [2020-10-13 09:13:57,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:57" (1/1) ... [2020-10-13 09:13:57,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:57" (1/1) ... [2020-10-13 09:13:57,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:13:57,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:13:57,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:13:57,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:13:57,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:57" (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 [2020-10-13 09:13:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:13:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:13:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:13:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:13:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:13:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:13:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:13:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:13:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:13:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:13:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:13:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:13:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:14:02,516 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:14:02,517 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:14:02,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:02 BoogieIcfgContainer [2020-10-13 09:14:02,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:14:02,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:14:02,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:14:02,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:14:02,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:13:56" (1/3) ... [2020-10-13 09:14:02,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffbd156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:02, skipping insertion in model container [2020-10-13 09:14:02,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:57" (2/3) ... [2020-10-13 09:14:02,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffbd156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:02, skipping insertion in model container [2020-10-13 09:14:02,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:02" (3/3) ... [2020-10-13 09:14:02,537 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label05.c [2020-10-13 09:14:02,550 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:14:02,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:14:02,578 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:14:02,611 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:14:02,611 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:14:02,611 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:14:02,611 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:14:02,611 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:14:02,612 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:14:02,612 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:14:02,612 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:14:02,644 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-13 09:14:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 09:14:02,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:02,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:02,655 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:02,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:02,663 INFO L82 PathProgramCache]: Analyzing trace with hash 521251962, now seen corresponding path program 1 times [2020-10-13 09:14:02,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:02,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030658072] [2020-10-13 09:14:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:02,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:03,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:03,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 09:14:03,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:03,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-13 09:14:03,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:14:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:14:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:14:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 09:14:03,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:03,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:03,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:03,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:03,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:14:03,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:03,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:14:03,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:14:03,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030658072] [2020-10-13 09:14:03,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:14:03,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:14:03,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300054003] [2020-10-13 09:14:03,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:14:03,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:03,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:14:03,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:14:03,461 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-13 09:14:07,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:07,625 INFO L93 Difference]: Finished difference Result 1169 states and 2165 transitions. [2020-10-13 09:14:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:07,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-13 09:14:07,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:07,673 INFO L225 Difference]: With dead ends: 1169 [2020-10-13 09:14:07,674 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 09:14:07,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:07,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 09:14:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2020-10-13 09:14:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-13 09:14:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1077 transitions. [2020-10-13 09:14:07,814 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1077 transitions. Word has length 25 [2020-10-13 09:14:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:07,814 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1077 transitions. [2020-10-13 09:14:07,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:14:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1077 transitions. [2020-10-13 09:14:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 09:14:07,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:07,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:07,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:14:07,821 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:07,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1195239347, now seen corresponding path program 1 times [2020-10-13 09:14:07,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:07,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288088307] [2020-10-13 09:14:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:07,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:08,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:08,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:08,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 09:14:08,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:14:08,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-10-13 09:14:08,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:14:08,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:14:08,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:08,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:08,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:08,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:08,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:08,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:08,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:14:08,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:08,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:08,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:08,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:08,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:14:08,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:08,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:14:08,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:14:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:14:09,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288088307] [2020-10-13 09:14:09,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:09,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:14:09,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934504302] [2020-10-13 09:14:09,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:14:09,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:09,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:14:09,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:09,074 INFO L87 Difference]: Start difference. First operand 689 states and 1077 transitions. Second operand 6 states. [2020-10-13 09:14:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:15,072 INFO L93 Difference]: Finished difference Result 2744 states and 4355 transitions. [2020-10-13 09:14:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:14:15,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-13 09:14:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:15,085 INFO L225 Difference]: With dead ends: 2744 [2020-10-13 09:14:15,086 INFO L226 Difference]: Without dead ends: 2061 [2020-10-13 09:14:15,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:14:15,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2020-10-13 09:14:15,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 2057. [2020-10-13 09:14:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2057 states. [2020-10-13 09:14:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2927 transitions. [2020-10-13 09:14:15,185 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2927 transitions. Word has length 100 [2020-10-13 09:14:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:15,186 INFO L479 AbstractCegarLoop]: Abstraction has 2057 states and 2927 transitions. [2020-10-13 09:14:15,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:14:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2927 transitions. [2020-10-13 09:14:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 09:14:15,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:15,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:15,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:14:15,195 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:15,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1611973385, now seen corresponding path program 1 times [2020-10-13 09:14:15,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:15,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956319295] [2020-10-13 09:14:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:15,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:18,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:18,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 09:14:18,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:14:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3210 [2020-10-13 09:14:18,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-13 09:14:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:14:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:18,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:18,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:18,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:18,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:18,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:18,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:14:18,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:18,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:18,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:18,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:14:18,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:18,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:14:18,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:18,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:18,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:18,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:14:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:18,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:18,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:14:18,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:14:18,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:14:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 09:14:18,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956319295] [2020-10-13 09:14:18,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:18,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:14:18,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054397593] [2020-10-13 09:14:18,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:14:18,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:18,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:14:18,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:18,808 INFO L87 Difference]: Start difference. First operand 2057 states and 2927 transitions. Second operand 5 states. [2020-10-13 09:14:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:23,673 INFO L93 Difference]: Finished difference Result 5138 states and 7526 transitions. [2020-10-13 09:14:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:23,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-10-13 09:14:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:23,696 INFO L225 Difference]: With dead ends: 5138 [2020-10-13 09:14:23,697 INFO L226 Difference]: Without dead ends: 3087 [2020-10-13 09:14:23,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:23,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2020-10-13 09:14:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 3083. [2020-10-13 09:14:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3083 states. [2020-10-13 09:14:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4327 transitions. [2020-10-13 09:14:23,807 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4327 transitions. Word has length 188 [2020-10-13 09:14:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:23,814 INFO L479 AbstractCegarLoop]: Abstraction has 3083 states and 4327 transitions. [2020-10-13 09:14:23,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:14:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4327 transitions. [2020-10-13 09:14:23,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-13 09:14:23,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:23,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:23,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:14:23,830 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:23,831 INFO L82 PathProgramCache]: Analyzing trace with hash -535699510, now seen corresponding path program 1 times [2020-10-13 09:14:23,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:23,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103273385] [2020-10-13 09:14:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:23,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:24,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:27,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:27,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-13 09:14:27,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:14:27,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3978 [2020-10-13 09:14:27,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-10-13 09:14:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:14:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:27,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:27,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:27,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:27,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:27,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:27,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:14:27,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:28,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:28,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:14:28,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:14:28,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:28,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:28,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:14:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:28,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:28,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:28,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:14:28,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:28,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:14:28,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 09:14:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-13 09:14:28,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103273385] [2020-10-13 09:14:28,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:28,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:14:28,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408615222] [2020-10-13 09:14:28,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:14:28,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:28,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:14:28,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:28,249 INFO L87 Difference]: Start difference. First operand 3083 states and 4327 transitions. Second operand 5 states. [2020-10-13 09:14:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:33,439 INFO L93 Difference]: Finished difference Result 7865 states and 11274 transitions. [2020-10-13 09:14:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:33,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-13 09:14:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:33,485 INFO L225 Difference]: With dead ends: 7865 [2020-10-13 09:14:33,486 INFO L226 Difference]: Without dead ends: 4788 [2020-10-13 09:14:33,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2020-10-13 09:14:33,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4784. [2020-10-13 09:14:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4784 states. [2020-10-13 09:14:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 6495 transitions. [2020-10-13 09:14:33,683 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 6495 transitions. Word has length 269 [2020-10-13 09:14:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:33,685 INFO L479 AbstractCegarLoop]: Abstraction has 4784 states and 6495 transitions. [2020-10-13 09:14:33,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:14:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 6495 transitions. [2020-10-13 09:14:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 09:14:33,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:33,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:33,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:14:33,693 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:33,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1386811118, now seen corresponding path program 1 times [2020-10-13 09:14:33,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:33,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365713704] [2020-10-13 09:14:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:33,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:33,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:34,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:38,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:38,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:38,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-13 09:14:38,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:14:38,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-13 09:14:38,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 264 [2020-10-13 09:14:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 09:14:38,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:39,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:39,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:39,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:39,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:39,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:14:39,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:39,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:39,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:14:39,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:39,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:39,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:39,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:14:39,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:39,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:14:39,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:39,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:14:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:39,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:39,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:14:39,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:14:39,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:39,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:39,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 09:14:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:39,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:39,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:14:39,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:39,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:14:39,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:14:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:39,485 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-13 09:14:39,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365713704] [2020-10-13 09:14:39,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:39,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:14:39,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246863774] [2020-10-13 09:14:39,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:14:39,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:39,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:14:39,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:39,488 INFO L87 Difference]: Start difference. First operand 4784 states and 6495 transitions. Second operand 5 states. [2020-10-13 09:14:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:43,101 INFO L93 Difference]: Finished difference Result 9574 states and 13021 transitions. [2020-10-13 09:14:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:43,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 275 [2020-10-13 09:14:43,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:43,129 INFO L225 Difference]: With dead ends: 9574 [2020-10-13 09:14:43,130 INFO L226 Difference]: Without dead ends: 4788 [2020-10-13 09:14:43,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:43,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2020-10-13 09:14:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4784. [2020-10-13 09:14:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4784 states. [2020-10-13 09:14:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 6491 transitions. [2020-10-13 09:14:43,274 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 6491 transitions. Word has length 275 [2020-10-13 09:14:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:43,274 INFO L479 AbstractCegarLoop]: Abstraction has 4784 states and 6491 transitions. [2020-10-13 09:14:43,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:14:43,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 6491 transitions. [2020-10-13 09:14:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 09:14:43,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:43,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:43,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:14:43,284 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:43,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:43,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1062893047, now seen corresponding path program 1 times [2020-10-13 09:14:43,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:43,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635587490] [2020-10-13 09:14:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:43,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:43,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:43,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:44,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:47,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:47,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 09:14:47,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:14:47,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-10-13 09:14:47,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:47,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 09:14:47,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:14:47,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:14:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:47,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:47,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:47,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:47,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:14:47,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:47,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:47,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:47,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:47,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:14:47,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:14:47,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:47,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:47,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:14:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:47,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:47,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:14:47,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:47,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-13 09:14:47,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:47,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:47,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:14:47,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 09:14:48,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635587490] [2020-10-13 09:14:48,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:48,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:14:48,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10393292] [2020-10-13 09:14:48,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:14:48,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:48,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:14:48,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:14:48,188 INFO L87 Difference]: Start difference. First operand 4784 states and 6491 transitions. Second operand 5 states. [2020-10-13 09:14:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:14:51,440 INFO L93 Difference]: Finished difference Result 9578 states and 13024 transitions. [2020-10-13 09:14:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:14:51,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-13 09:14:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:14:51,465 INFO L225 Difference]: With dead ends: 9578 [2020-10-13 09:14:51,465 INFO L226 Difference]: Without dead ends: 4788 [2020-10-13 09:14:51,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:14:51,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2020-10-13 09:14:51,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 4784. [2020-10-13 09:14:51,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4784 states. [2020-10-13 09:14:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 6480 transitions. [2020-10-13 09:14:51,606 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 6480 transitions. Word has length 316 [2020-10-13 09:14:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:14:51,607 INFO L479 AbstractCegarLoop]: Abstraction has 4784 states and 6480 transitions. [2020-10-13 09:14:51,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:14:51,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 6480 transitions. [2020-10-13 09:14:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-13 09:14:51,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:14:51,620 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:14:51,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:14:51,620 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:14:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:14:51,621 INFO L82 PathProgramCache]: Analyzing trace with hash -117190998, now seen corresponding path program 1 times [2020-10-13 09:14:51,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:14:51,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453791528] [2020-10-13 09:14:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:14:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:51,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:52,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:53,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:53,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-13 09:14:53,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:14:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-10-13 09:14:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:14:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:14:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:14:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:54,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:54,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:54,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:14:54,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:54,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:14:54,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:14:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:14:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:14:54,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:14:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:54,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:54,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:14:54,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:14:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:14:54,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:14:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:14:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:14:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 09:14:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:14:54,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:14:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:14:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:14:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:14:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-13 09:14:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:14:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:14:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:14:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-13 09:14:55,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:14:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:14:56,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453791528] [2020-10-13 09:14:56,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:14:56,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:14:56,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476214508] [2020-10-13 09:14:56,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:14:56,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:14:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:14:56,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:14:56,581 INFO L87 Difference]: Start difference. First operand 4784 states and 6480 transitions. Second operand 7 states. [2020-10-13 09:14:57,145 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-10-13 09:15:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:02,686 INFO L93 Difference]: Finished difference Result 9724 states and 13281 transitions. [2020-10-13 09:15:02,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:15:02,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-13 09:15:02,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:02,732 INFO L225 Difference]: With dead ends: 9724 [2020-10-13 09:15:02,732 INFO L226 Difference]: Without dead ends: 4873 [2020-10-13 09:15:02,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:15:02,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2020-10-13 09:15:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4797. [2020-10-13 09:15:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4797 states. [2020-10-13 09:15:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 6146 transitions. [2020-10-13 09:15:02,919 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 6146 transitions. Word has length 375 [2020-10-13 09:15:02,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:02,920 INFO L479 AbstractCegarLoop]: Abstraction has 4797 states and 6146 transitions. [2020-10-13 09:15:02,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:15:02,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 6146 transitions. [2020-10-13 09:15:02,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-13 09:15:02,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:02,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:02,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:15:02,937 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:02,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:02,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1266670530, now seen corresponding path program 1 times [2020-10-13 09:15:02,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:02,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228116695] [2020-10-13 09:15:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:03,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:08,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:08,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:15:08,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:15:08,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 09:15:08,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:15:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:15:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:15:08,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:08,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:08,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:08,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:08,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:15:08,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:15:08,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:08,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:08,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:15:08,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:08,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:15:08,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:15:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:15:08,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 09:15:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:08,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:08,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:09,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:09,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:15:09,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:15:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-13 09:15:09,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:15:09,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:15:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-13 09:15:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:15:10,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228116695] [2020-10-13 09:15:10,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:10,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:15:10,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444145080] [2020-10-13 09:15:10,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:15:10,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:10,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:15:10,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:15:10,416 INFO L87 Difference]: Start difference. First operand 4797 states and 6146 transitions. Second operand 10 states. [2020-10-13 09:15:11,986 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-13 09:15:12,195 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-13 09:15:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:16,457 INFO L93 Difference]: Finished difference Result 9982 states and 12887 transitions. [2020-10-13 09:15:16,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 09:15:16,459 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 395 [2020-10-13 09:15:16,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:16,487 INFO L225 Difference]: With dead ends: 9982 [2020-10-13 09:15:16,488 INFO L226 Difference]: Without dead ends: 5061 [2020-10-13 09:15:16,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-10-13 09:15:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5061 states. [2020-10-13 09:15:16,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5061 to 4812. [2020-10-13 09:15:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4812 states. [2020-10-13 09:15:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 5687 transitions. [2020-10-13 09:15:16,663 INFO L78 Accepts]: Start accepts. Automaton has 4812 states and 5687 transitions. Word has length 395 [2020-10-13 09:15:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:16,664 INFO L479 AbstractCegarLoop]: Abstraction has 4812 states and 5687 transitions. [2020-10-13 09:15:16,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:15:16,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4812 states and 5687 transitions. [2020-10-13 09:15:16,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-13 09:15:16,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:16,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:16,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:15:16,685 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:16,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:16,686 INFO L82 PathProgramCache]: Analyzing trace with hash -193549802, now seen corresponding path program 1 times [2020-10-13 09:15:16,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:16,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041614979] [2020-10-13 09:15:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:18,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:19,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:21,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:21,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 513 [2020-10-13 09:15:21,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:15:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 09:15:21,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:15:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:15:21,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:15:21,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:21,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:21,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:21,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:21,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:21,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:15:21,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:15:21,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:21,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:21,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:21,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:15:21,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 09:15:21,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:21,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:15:21,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 09:15:21,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:22,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 09:15:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:22,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:22,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:15:22,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:22,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:15:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:15:22,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-13 09:15:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:22,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:22,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:22,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:15:22,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:22,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:15:22,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:22,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:22,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:15:22,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:22,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 54 proven. 190 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-13 09:15:22,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041614979] [2020-10-13 09:15:22,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:22,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:15:22,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975260473] [2020-10-13 09:15:22,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:15:22,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:22,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:15:22,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:15:22,407 INFO L87 Difference]: Start difference. First operand 4812 states and 5687 transitions. Second operand 7 states. [2020-10-13 09:15:26,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:26,518 INFO L93 Difference]: Finished difference Result 13773 states and 16760 transitions. [2020-10-13 09:15:26,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:15:26,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 499 [2020-10-13 09:15:26,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:26,561 INFO L225 Difference]: With dead ends: 13773 [2020-10-13 09:15:26,561 INFO L226 Difference]: Without dead ends: 8967 [2020-10-13 09:15:26,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:15:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8967 states. [2020-10-13 09:15:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8967 to 8937. [2020-10-13 09:15:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8937 states. [2020-10-13 09:15:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8937 states to 8937 states and 10654 transitions. [2020-10-13 09:15:26,884 INFO L78 Accepts]: Start accepts. Automaton has 8937 states and 10654 transitions. Word has length 499 [2020-10-13 09:15:26,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:26,885 INFO L479 AbstractCegarLoop]: Abstraction has 8937 states and 10654 transitions. [2020-10-13 09:15:26,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:15:26,885 INFO L276 IsEmpty]: Start isEmpty. Operand 8937 states and 10654 transitions. [2020-10-13 09:15:26,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-13 09:15:26,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:26,926 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:26,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:15:26,927 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:26,928 INFO L82 PathProgramCache]: Analyzing trace with hash -2073974229, now seen corresponding path program 1 times [2020-10-13 09:15:26,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:26,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984336933] [2020-10-13 09:15:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:27,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:32,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:32,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-13 09:15:32,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:15:32,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 09:15:32,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-13 09:15:32,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 09:15:32,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:32,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:32,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:32,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:32,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:15:32,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:32,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:32,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:32,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:32,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:32,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:32,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:15:32,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:32,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:15:32,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:15:32,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:32,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 09:15:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:32,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:32,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:32,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:15:32,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:15:32,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:15:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:15:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-13 09:15:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:32,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:32,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:32,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:15:32,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:32,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 09:15:32,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:32,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:32,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:15:32,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:32,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 170 proven. 114 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-13 09:15:32,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984336933] [2020-10-13 09:15:32,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:32,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:15:32,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738675383] [2020-10-13 09:15:32,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:15:32,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:32,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:15:32,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:15:32,844 INFO L87 Difference]: Start difference. First operand 8937 states and 10654 transitions. Second operand 8 states. [2020-10-13 09:15:36,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:36,270 INFO L93 Difference]: Finished difference Result 19937 states and 23972 transitions. [2020-10-13 09:15:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:15:36,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 534 [2020-10-13 09:15:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:36,313 INFO L225 Difference]: With dead ends: 19937 [2020-10-13 09:15:36,313 INFO L226 Difference]: Without dead ends: 11006 [2020-10-13 09:15:36,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:15:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11006 states. [2020-10-13 09:15:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11006 to 10990. [2020-10-13 09:15:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10990 states. [2020-10-13 09:15:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10990 states to 10990 states and 13054 transitions. [2020-10-13 09:15:36,614 INFO L78 Accepts]: Start accepts. Automaton has 10990 states and 13054 transitions. Word has length 534 [2020-10-13 09:15:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:36,615 INFO L479 AbstractCegarLoop]: Abstraction has 10990 states and 13054 transitions. [2020-10-13 09:15:36,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:15:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 10990 states and 13054 transitions. [2020-10-13 09:15:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2020-10-13 09:15:36,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:36,639 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:36,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:15:36,639 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:36,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1598689643, now seen corresponding path program 1 times [2020-10-13 09:15:36,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:36,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761339468] [2020-10-13 09:15:36,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:36,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:41,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:41,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 620 [2020-10-13 09:15:41,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:15:41,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 09:15:41,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-13 09:15:41,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:15:41,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:41,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:41,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:41,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:41,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:41,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:15:41,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:41,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:41,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:41,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:41,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:41,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:41,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:15:41,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:41,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:15:41,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:15:41,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:41,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 09:15:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:42,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:42,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:15:42,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:42,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:15:42,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:15:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:15:42,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:42,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-13 09:15:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:42,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:42,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:42,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 09:15:42,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:42,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:15:42,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:15:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:42,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:42,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-13 09:15:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:42,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:42,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:42,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:15:42,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:15:42,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:15:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 147 proven. 136 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-13 09:15:42,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761339468] [2020-10-13 09:15:42,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:42,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:15:42,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596965570] [2020-10-13 09:15:42,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:15:42,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:42,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:15:42,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:15:42,496 INFO L87 Difference]: Start difference. First operand 10990 states and 13054 transitions. Second operand 7 states. [2020-10-13 09:15:47,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:47,062 INFO L93 Difference]: Finished difference Result 24204 states and 30071 transitions. [2020-10-13 09:15:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:15:47,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 604 [2020-10-13 09:15:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:47,139 INFO L225 Difference]: With dead ends: 24204 [2020-10-13 09:15:47,139 INFO L226 Difference]: Without dead ends: 13220 [2020-10-13 09:15:47,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:15:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13220 states. [2020-10-13 09:15:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13220 to 13044. [2020-10-13 09:15:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13044 states. [2020-10-13 09:15:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13044 states to 13044 states and 15109 transitions. [2020-10-13 09:15:47,561 INFO L78 Accepts]: Start accepts. Automaton has 13044 states and 15109 transitions. Word has length 604 [2020-10-13 09:15:47,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:47,562 INFO L479 AbstractCegarLoop]: Abstraction has 13044 states and 15109 transitions. [2020-10-13 09:15:47,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:15:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 13044 states and 15109 transitions. [2020-10-13 09:15:47,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-13 09:15:47,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:47,591 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:47,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:15:47,592 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:47,592 INFO L82 PathProgramCache]: Analyzing trace with hash -894187878, now seen corresponding path program 1 times [2020-10-13 09:15:47,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:47,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295547614] [2020-10-13 09:15:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:47,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:52,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:52,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 691 [2020-10-13 09:15:52,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:15:52,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 09:15:52,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:15:52,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-13 09:15:52,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:52,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:15:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:52,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:52,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:52,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:15:52,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:15:52,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:52,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:52,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:15:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:53,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:53,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:15:53,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:53,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 09:15:53,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:15:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:15:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:15:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:15:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:53,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:53,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:53,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:15:53,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 09:15:53,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:15:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:15:53,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:15:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:15:53,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-13 09:15:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:53,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:15:53,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:15:53,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:15:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 09:15:53,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:15:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:15:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:15:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:15:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:15:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 199 proven. 143 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-13 09:15:54,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295547614] [2020-10-13 09:15:54,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:15:54,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:15:54,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501902890] [2020-10-13 09:15:54,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:15:54,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:15:54,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:15:54,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:15:54,307 INFO L87 Difference]: Start difference. First operand 13044 states and 15109 transitions. Second operand 7 states. [2020-10-13 09:15:58,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:15:58,280 INFO L93 Difference]: Finished difference Result 26102 states and 30271 transitions. [2020-10-13 09:15:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:15:58,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 677 [2020-10-13 09:15:58,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:15:58,334 INFO L225 Difference]: With dead ends: 26102 [2020-10-13 09:15:58,334 INFO L226 Difference]: Without dead ends: 13064 [2020-10-13 09:15:58,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:15:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13064 states. [2020-10-13 09:15:58,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13064 to 13048. [2020-10-13 09:15:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13048 states. [2020-10-13 09:15:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13048 states to 13048 states and 14802 transitions. [2020-10-13 09:15:58,631 INFO L78 Accepts]: Start accepts. Automaton has 13048 states and 14802 transitions. Word has length 677 [2020-10-13 09:15:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:15:58,632 INFO L479 AbstractCegarLoop]: Abstraction has 13048 states and 14802 transitions. [2020-10-13 09:15:58,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:15:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 13048 states and 14802 transitions. [2020-10-13 09:15:58,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2020-10-13 09:15:58,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:15:58,657 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:15:58,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:15:58,657 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:15:58,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:15:58,658 INFO L82 PathProgramCache]: Analyzing trace with hash 587300946, now seen corresponding path program 1 times [2020-10-13 09:15:58,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:15:58,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695802376] [2020-10-13 09:15:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:15:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:15:58,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:58,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:15:59,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:03,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 695 [2020-10-13 09:16:03,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:16:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:16:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:16:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:16:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 09:16:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:03,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:03,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:03,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:03,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:03,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:16:03,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:16:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:03,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:04,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:04,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:16:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-13 09:16:04,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:04,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:16:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 09:16:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:04,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:04,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:04,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-13 09:16:04,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:16:04,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-13 09:16:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-13 09:16:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:04,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:04,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:16:04,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:04,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:16:04,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:04,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:16:04,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:04,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 54 proven. 260 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-13 09:16:04,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695802376] [2020-10-13 09:16:04,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:04,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:16:04,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864365737] [2020-10-13 09:16:04,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:16:04,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:04,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:16:04,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:16:04,709 INFO L87 Difference]: Start difference. First operand 13048 states and 14802 transitions. Second operand 7 states. [2020-10-13 09:16:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:07,882 INFO L93 Difference]: Finished difference Result 28828 states and 32654 transitions. [2020-10-13 09:16:07,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:16:07,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 681 [2020-10-13 09:16:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:07,920 INFO L225 Difference]: With dead ends: 28828 [2020-10-13 09:16:07,920 INFO L226 Difference]: Without dead ends: 15786 [2020-10-13 09:16:07,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:16:07,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15786 states. [2020-10-13 09:16:08,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15786 to 14737. [2020-10-13 09:16:08,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14737 states. [2020-10-13 09:16:08,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14737 states to 14737 states and 16538 transitions. [2020-10-13 09:16:08,206 INFO L78 Accepts]: Start accepts. Automaton has 14737 states and 16538 transitions. Word has length 681 [2020-10-13 09:16:08,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:08,207 INFO L479 AbstractCegarLoop]: Abstraction has 14737 states and 16538 transitions. [2020-10-13 09:16:08,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:16:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 14737 states and 16538 transitions. [2020-10-13 09:16:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2020-10-13 09:16:08,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:08,233 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:16:08,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:16:08,233 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:08,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:08,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2109573839, now seen corresponding path program 1 times [2020-10-13 09:16:08,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:08,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683827346] [2020-10-13 09:16:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:13,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:13,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 742 [2020-10-13 09:16:13,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:16:13,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 09:16:13,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:16:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-13 09:16:13,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:13,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:13,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:13,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:13,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:13,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:16:13,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:13,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:13,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:13,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:13,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:16:13,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-13 09:16:13,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:13,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:16:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:13,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:16:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:13,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:13,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:16:13,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:13,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-13 09:16:13,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-13 09:16:13,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-13 09:16:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:14,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:14,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:14,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:16:14,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:14,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:16:14,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:14,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:16:14,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:14,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 250 proven. 194 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-13 09:16:14,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683827346] [2020-10-13 09:16:14,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:14,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:16:14,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454433782] [2020-10-13 09:16:14,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:16:14,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:14,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:16:14,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:16:14,588 INFO L87 Difference]: Start difference. First operand 14737 states and 16538 transitions. Second operand 7 states. [2020-10-13 09:16:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:20,905 INFO L93 Difference]: Finished difference Result 34454 states and 40249 transitions. [2020-10-13 09:16:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:16:20,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 728 [2020-10-13 09:16:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:20,999 INFO L225 Difference]: With dead ends: 34454 [2020-10-13 09:16:20,999 INFO L226 Difference]: Without dead ends: 20060 [2020-10-13 09:16:21,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:16:21,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20060 states. [2020-10-13 09:16:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20060 to 19156. [2020-10-13 09:16:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19156 states. [2020-10-13 09:16:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19156 states to 19156 states and 21570 transitions. [2020-10-13 09:16:21,495 INFO L78 Accepts]: Start accepts. Automaton has 19156 states and 21570 transitions. Word has length 728 [2020-10-13 09:16:21,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:21,496 INFO L479 AbstractCegarLoop]: Abstraction has 19156 states and 21570 transitions. [2020-10-13 09:16:21,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:16:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 19156 states and 21570 transitions. [2020-10-13 09:16:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2020-10-13 09:16:21,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:21,530 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:16:21,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:16:21,530 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:21,531 INFO L82 PathProgramCache]: Analyzing trace with hash 90281763, now seen corresponding path program 1 times [2020-10-13 09:16:21,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:21,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789897925] [2020-10-13 09:16:21,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:22,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:26,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:26,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 788 [2020-10-13 09:16:26,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:16:26,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 09:16:26,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 09:16:26,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:16:26,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:26,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:26,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:26,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:26,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:16:26,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:26,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:26,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:26,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:16:26,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:26,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 09:16:26,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:26,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:26,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-13 09:16:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:27,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:16:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:27,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:27,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:27,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:16:27,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:16:27,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:27,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 09:16:27,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:27,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-13 09:16:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:27,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:27,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:16:27,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:27,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:16:27,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-13 09:16:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:27,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-13 09:16:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:27,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:27,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:16:27,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 09:16:27,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:16:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 172 proven. 186 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2020-10-13 09:16:27,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789897925] [2020-10-13 09:16:27,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:27,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:16:27,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9707034] [2020-10-13 09:16:27,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:16:27,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:27,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:16:27,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:16:27,841 INFO L87 Difference]: Start difference. First operand 19156 states and 21570 transitions. Second operand 7 states. [2020-10-13 09:16:33,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:33,909 INFO L93 Difference]: Finished difference Result 40225 states and 46649 transitions. [2020-10-13 09:16:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:16:33,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 772 [2020-10-13 09:16:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:33,970 INFO L225 Difference]: With dead ends: 40225 [2020-10-13 09:16:33,971 INFO L226 Difference]: Without dead ends: 21765 [2020-10-13 09:16:33,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:16:34,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21765 states. [2020-10-13 09:16:34,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21765 to 21519. [2020-10-13 09:16:34,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21519 states. [2020-10-13 09:16:34,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21519 states to 21519 states and 24059 transitions. [2020-10-13 09:16:34,562 INFO L78 Accepts]: Start accepts. Automaton has 21519 states and 24059 transitions. Word has length 772 [2020-10-13 09:16:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:34,564 INFO L479 AbstractCegarLoop]: Abstraction has 21519 states and 24059 transitions. [2020-10-13 09:16:34,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:16:34,564 INFO L276 IsEmpty]: Start isEmpty. Operand 21519 states and 24059 transitions. [2020-10-13 09:16:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-13 09:16:34,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:34,597 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:16:34,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:16:34,598 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:34,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:34,598 INFO L82 PathProgramCache]: Analyzing trace with hash -218938777, now seen corresponding path program 1 times [2020-10-13 09:16:34,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:34,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457537787] [2020-10-13 09:16:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:34,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:39,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:39,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 846 [2020-10-13 09:16:39,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:16:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4546 [2020-10-13 09:16:39,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-13 09:16:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-13 09:16:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:39,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:39,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:39,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:39,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:39,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:16:39,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:39,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:39,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:39,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:39,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:16:39,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:16:39,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:39,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:16:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:39,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:39,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 09:16:39,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:16:39,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 09:16:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:39,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-13 09:16:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:39,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:39,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:16:39,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:39,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 09:16:39,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:39,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:16:39,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:16:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:39,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-13 09:16:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:39,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:39,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:16:39,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 09:16:39,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:16:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:16:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1069 backedges. 367 proven. 143 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2020-10-13 09:16:40,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457537787] [2020-10-13 09:16:40,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:40,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:16:40,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794848097] [2020-10-13 09:16:40,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:16:40,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:40,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:16:40,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:16:40,595 INFO L87 Difference]: Start difference. First operand 21519 states and 24059 transitions. Second operand 7 states. [2020-10-13 09:16:44,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:44,041 INFO L93 Difference]: Finished difference Result 42349 states and 47410 transitions. [2020-10-13 09:16:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:16:44,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 830 [2020-10-13 09:16:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:44,088 INFO L225 Difference]: With dead ends: 42349 [2020-10-13 09:16:44,089 INFO L226 Difference]: Without dead ends: 21524 [2020-10-13 09:16:44,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:16:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21524 states. [2020-10-13 09:16:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21524 to 21520. [2020-10-13 09:16:44,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21520 states. [2020-10-13 09:16:44,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21520 states to 21520 states and 23751 transitions. [2020-10-13 09:16:44,460 INFO L78 Accepts]: Start accepts. Automaton has 21520 states and 23751 transitions. Word has length 830 [2020-10-13 09:16:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:44,461 INFO L479 AbstractCegarLoop]: Abstraction has 21520 states and 23751 transitions. [2020-10-13 09:16:44,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:16:44,461 INFO L276 IsEmpty]: Start isEmpty. Operand 21520 states and 23751 transitions. [2020-10-13 09:16:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2020-10-13 09:16:44,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:44,480 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:16:44,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:16:44,481 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:44,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:44,481 INFO L82 PathProgramCache]: Analyzing trace with hash -966690770, now seen corresponding path program 1 times [2020-10-13 09:16:44,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:44,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895570435] [2020-10-13 09:16:44,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:44,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:44,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:44,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:49,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:49,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 897 [2020-10-13 09:16:49,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:16:49,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 09:16:49,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:16:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 611 [2020-10-13 09:16:49,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 09:16:49,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:49,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:16:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:49,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:49,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:49,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:16:49,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:49,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:16:49,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:49,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:49,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:49,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:16:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:49,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:49,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 09:16:49,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:16:49,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:49,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:49,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:49,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:16:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-13 09:16:49,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:16:49,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:16:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:16:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-13 09:16:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:50,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:50,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:16:50,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:16:50,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:16:50,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:16:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:16:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:16:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:50,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2020-10-13 09:16:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:50,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:16:50,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:16:50,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:16:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-13 09:16:50,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:16:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:16:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:16:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-13 09:16:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:16:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 653 proven. 2 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-13 09:16:52,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895570435] [2020-10-13 09:16:52,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:16:52,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:16:52,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513306348] [2020-10-13 09:16:52,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:16:52,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:16:52,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:16:52,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:16:52,436 INFO L87 Difference]: Start difference. First operand 21520 states and 23751 transitions. Second operand 10 states. [2020-10-13 09:16:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:16:56,674 INFO L93 Difference]: Finished difference Result 41689 states and 46023 transitions. [2020-10-13 09:16:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 09:16:56,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 881 [2020-10-13 09:16:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:16:56,709 INFO L225 Difference]: With dead ends: 41689 [2020-10-13 09:16:56,710 INFO L226 Difference]: Without dead ends: 20698 [2020-10-13 09:16:56,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2020-10-13 09:16:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20698 states. [2020-10-13 09:16:57,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20698 to 20503. [2020-10-13 09:16:57,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20503 states. [2020-10-13 09:16:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20503 states to 20503 states and 22431 transitions. [2020-10-13 09:16:57,028 INFO L78 Accepts]: Start accepts. Automaton has 20503 states and 22431 transitions. Word has length 881 [2020-10-13 09:16:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:16:57,028 INFO L479 AbstractCegarLoop]: Abstraction has 20503 states and 22431 transitions. [2020-10-13 09:16:57,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:16:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 20503 states and 22431 transitions. [2020-10-13 09:16:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2020-10-13 09:16:57,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:16:57,047 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:16:57,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:16:57,048 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:16:57,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:16:57,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1084909510, now seen corresponding path program 1 times [2020-10-13 09:16:57,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:16:57,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523180112] [2020-10-13 09:16:57,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:16:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:16:57,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:16:57,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:01,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:01,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1027 [2020-10-13 09:17:01,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:01,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4321 [2020-10-13 09:17:01,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:01,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:01,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-13 09:17:01,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-13 09:17:01,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:01,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:01,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:01,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:01,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:01,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:01,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:01,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:01,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:17:01,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:01,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:01,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:17:01,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:01,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-13 09:17:01,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-13 09:17:01,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:01,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:17:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:02,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:02,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:17:02,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 09:17:02,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:17:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:02,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-13 09:17:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:02,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:02,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:02,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:02,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:02,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:17:02,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 09:17:02,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:02,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:02,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-13 09:17:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:02,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:17:02,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:02,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 09:17:02,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:17:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-13 09:17:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:02,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:02,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:02,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:17:02,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 09:17:02,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:17:02,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 261 proven. 446 refuted. 0 times theorem prover too weak. 1014 trivial. 0 not checked. [2020-10-13 09:17:03,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523180112] [2020-10-13 09:17:03,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:03,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:03,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142491428] [2020-10-13 09:17:03,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:03,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:03,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:03,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:03,493 INFO L87 Difference]: Start difference. First operand 20503 states and 22431 transitions. Second operand 7 states. [2020-10-13 09:17:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:09,972 INFO L93 Difference]: Finished difference Result 40653 states and 44509 transitions. [2020-10-13 09:17:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:17:09,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1009 [2020-10-13 09:17:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:10,008 INFO L225 Difference]: With dead ends: 40653 [2020-10-13 09:17:10,009 INFO L226 Difference]: Without dead ends: 20493 [2020-10-13 09:17:10,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:17:10,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20493 states. [2020-10-13 09:17:10,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20493 to 19480. [2020-10-13 09:17:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19480 states. [2020-10-13 09:17:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19480 states to 19480 states and 21024 transitions. [2020-10-13 09:17:10,305 INFO L78 Accepts]: Start accepts. Automaton has 19480 states and 21024 transitions. Word has length 1009 [2020-10-13 09:17:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:17:10,305 INFO L479 AbstractCegarLoop]: Abstraction has 19480 states and 21024 transitions. [2020-10-13 09:17:10,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:17:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 19480 states and 21024 transitions. [2020-10-13 09:17:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2020-10-13 09:17:10,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:17:10,335 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:17:10,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 09:17:10,336 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:17:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:17:10,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1638635167, now seen corresponding path program 1 times [2020-10-13 09:17:10,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:17:10,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081177668] [2020-10-13 09:17:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:17:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:11,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:13,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:13,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1088 [2020-10-13 09:17:13,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:17:13,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2952 [2020-10-13 09:17:13,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-13 09:17:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:17:13,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:13,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:17:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:13,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:13,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:17:13,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:17:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:17:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:13,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:13,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 09:17:13,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:17:13,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:13,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 09:17:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:13,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:13,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:13,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:17:13,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:17:13,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:17:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:17:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-13 09:17:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:13,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-13 09:17:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:13,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:14,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:14,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:17:14,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 09:17:14,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:17:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:17:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-13 09:17:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-13 09:17:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:14,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:14,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 09:17:14,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:17:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-13 09:17:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:14,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:14,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-13 09:17:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:17:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:17:14,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:17:14,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 09:17:14,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:17:14,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:17:14,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:17:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:17:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-13 09:17:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:17:14,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:17:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 363 proven. 254 refuted. 0 times theorem prover too weak. 1259 trivial. 0 not checked. [2020-10-13 09:17:15,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081177668] [2020-10-13 09:17:15,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:17:15,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:17:15,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977618299] [2020-10-13 09:17:15,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:17:15,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:17:15,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:17:15,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:17:15,293 INFO L87 Difference]: Start difference. First operand 19480 states and 21024 transitions. Second operand 7 states. [2020-10-13 09:17:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:17:19,867 INFO L93 Difference]: Finished difference Result 40900 states and 45016 transitions. [2020-10-13 09:17:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:17:19,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1070 [2020-10-13 09:17:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:17:19,908 INFO L225 Difference]: With dead ends: 40900 [2020-10-13 09:17:19,909 INFO L226 Difference]: Without dead ends: 22104 [2020-10-13 09:17:19,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:17:19,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22104 states.