/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/Problem17_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:26:14,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:26:14,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:26:14,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:26:14,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:26:14,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:26:14,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:26:14,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:26:14,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:26:14,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:26:14,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:26:14,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:26:14,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:26:14,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:26:14,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:26:14,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:26:14,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:26:14,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:26:14,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:26:14,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:26:14,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:26:14,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:26:14,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:26:14,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:26:14,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:26:14,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:26:14,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:26:14,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:26:14,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:26:14,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:26:14,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:26:14,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:26:14,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:26:14,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:26:14,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:26:14,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:26:14,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:26:14,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:26:14,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:26:14,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:26:14,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:26:14,090 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 09:26:14,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:26:14,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:26:14,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:26:14,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:26:14,128 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:26:14,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:26:14,129 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:26:14,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:26:14,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:26:14,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:26:14,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:26:14,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:26:14,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:26:14,130 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:26:14,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:26:14,130 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:26:14,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:26:14,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:26:14,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:26:14,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:26:14,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:26:14,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:26:14,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:26:14,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:26:14,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:26:14,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:26:14,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:26:14,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:26:14,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:26:14,135 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 09:26:14,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:26:14,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:26:14,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:26:14,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:26:14,504 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:26:14,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03.c [2020-10-13 09:26:14,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21c13b3d4/646c2ee62c534e2cb6e000db626fd965/FLAG58cb94f77 [2020-10-13 09:26:15,369 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:26:15,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label03.c [2020-10-13 09:26:15,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21c13b3d4/646c2ee62c534e2cb6e000db626fd965/FLAG58cb94f77 [2020-10-13 09:26:15,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21c13b3d4/646c2ee62c534e2cb6e000db626fd965 [2020-10-13 09:26:15,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:26:15,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:26:15,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:26:15,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:26:15,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:26:15,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:26:15" (1/1) ... [2020-10-13 09:26:15,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67578ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:15, skipping insertion in model container [2020-10-13 09:26:15,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:26:15" (1/1) ... [2020-10-13 09:26:15,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:26:15,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:26:16,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:26:16,924 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:26:17,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:26:17,396 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:26:17,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:17 WrapperNode [2020-10-13 09:26:17,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:26:17,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:26:17,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:26:17,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:26:17,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:17" (1/1) ... [2020-10-13 09:26:17,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:17" (1/1) ... [2020-10-13 09:26:17,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:17" (1/1) ... [2020-10-13 09:26:17,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:17" (1/1) ... [2020-10-13 09:26:17,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:17" (1/1) ... [2020-10-13 09:26:17,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:17" (1/1) ... [2020-10-13 09:26:17,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:17" (1/1) ... [2020-10-13 09:26:17,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:26:17,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:26:17,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:26:17,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:26:17,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:17" (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 09:26:17,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:26:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:26:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:26:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:26:17,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:26:17,805 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:26:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:26:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:26:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:26:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:26:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:26:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:26:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:26:24,001 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:26:24,002 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:26:24,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:26:24 BoogieIcfgContainer [2020-10-13 09:26:24,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:26:24,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:26:24,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:26:24,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:26:24,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:26:15" (1/3) ... [2020-10-13 09:26:24,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107392ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:26:24, skipping insertion in model container [2020-10-13 09:26:24,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:26:17" (2/3) ... [2020-10-13 09:26:24,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107392ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:26:24, skipping insertion in model container [2020-10-13 09:26:24,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:26:24" (3/3) ... [2020-10-13 09:26:24,021 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label03.c [2020-10-13 09:26:24,033 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:26:24,042 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:26:24,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:26:24,090 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:26:24,090 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:26:24,090 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:26:24,091 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:26:24,091 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:26:24,091 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:26:24,091 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:26:24,091 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:26:24,123 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:26:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 09:26:24,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:24,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:26:24,134 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:24,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1421926551, now seen corresponding path program 1 times [2020-10-13 09:26:24,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:24,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429225905] [2020-10-13 09:26:24,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:24,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:24,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 09:26:24,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 572 [2020-10-13 09:26:24,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:26:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:26:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 09:26:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:26:25,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:25,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:25,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:25,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:25,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:26:25,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:26:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:25,081 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 09:26:25,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429225905] [2020-10-13 09:26:25,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:26:25,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:26:25,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570116257] [2020-10-13 09:26:25,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:26:25,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:25,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:26:25,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:26:25,109 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:26:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:37,459 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-13 09:26:37,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:26:37,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-13 09:26:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:37,489 INFO L225 Difference]: With dead ends: 1689 [2020-10-13 09:26:37,490 INFO L226 Difference]: Without dead ends: 1009 [2020-10-13 09:26:37,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 09:26:37,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-13 09:26:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-13 09:26:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-13 09:26:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-13 09:26:37,637 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 55 [2020-10-13 09:26:37,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:37,641 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-13 09:26:37,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:26:37,642 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-13 09:26:37,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 09:26:37,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:37,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:26:37,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:26:37,654 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:37,654 INFO L82 PathProgramCache]: Analyzing trace with hash -775740193, now seen corresponding path program 1 times [2020-10-13 09:26:37,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:37,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895404113] [2020-10-13 09:26:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:38,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:38,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:38,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 09:26:38,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:26:38,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 879 [2020-10-13 09:26:38,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:26:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:26:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:26:38,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:26:38,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:38,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:38,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:38,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:38,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:26:38,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:38,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:38,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:26:38,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:26:38,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:38,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:38,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:26:38,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 09:26:38,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:26:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:26:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:26:38,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895404113] [2020-10-13 09:26:38,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:26:38,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:26:38,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283653735] [2020-10-13 09:26:38,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:26:38,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:38,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:26:38,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:26:38,998 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 7 states. [2020-10-13 09:26:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:26:50,545 INFO L93 Difference]: Finished difference Result 2446 states and 3889 transitions. [2020-10-13 09:26:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:26:50,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-13 09:26:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:26:50,555 INFO L225 Difference]: With dead ends: 2446 [2020-10-13 09:26:50,556 INFO L226 Difference]: Without dead ends: 1461 [2020-10-13 09:26:50,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:26:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2020-10-13 09:26:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1432. [2020-10-13 09:26:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1432 states. [2020-10-13 09:26:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1858 transitions. [2020-10-13 09:26:50,626 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1858 transitions. Word has length 126 [2020-10-13 09:26:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:26:50,629 INFO L479 AbstractCegarLoop]: Abstraction has 1432 states and 1858 transitions. [2020-10-13 09:26:50,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:26:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1858 transitions. [2020-10-13 09:26:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 09:26:50,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:26:50,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:26:50,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:26:50,644 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:26:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:26:50,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1672472177, now seen corresponding path program 1 times [2020-10-13 09:26:50,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:26:50,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822992580] [2020-10-13 09:26:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:26:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:50,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:51,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 09:26:51,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:26:51,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-13 09:26:51,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:26:51,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:26:51,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 09:26:51,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:51,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:26:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:51,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:51,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:26:51,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:26:51,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:26:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:26:51,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:26:51,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:26:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:26:51,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:26:52,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:26:52,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:26:52,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:26:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:26:52,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:26:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:26:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:26:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:26:52,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:26:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:26:52,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822992580] [2020-10-13 09:26:52,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:26:52,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:26:52,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047700293] [2020-10-13 09:26:52,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:26:52,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:26:52,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:26:52,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:26:52,130 INFO L87 Difference]: Start difference. First operand 1432 states and 1858 transitions. Second operand 5 states. [2020-10-13 09:27:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:05,289 INFO L93 Difference]: Finished difference Result 3332 states and 4572 transitions. [2020-10-13 09:27:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:05,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 09:27:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:05,300 INFO L225 Difference]: With dead ends: 3332 [2020-10-13 09:27:05,301 INFO L226 Difference]: Without dead ends: 1893 [2020-10-13 09:27:05,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:27:05,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-10-13 09:27:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1881. [2020-10-13 09:27:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2020-10-13 09:27:05,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2299 transitions. [2020-10-13 09:27:05,363 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2299 transitions. Word has length 129 [2020-10-13 09:27:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:05,366 INFO L479 AbstractCegarLoop]: Abstraction has 1881 states and 2299 transitions. [2020-10-13 09:27:05,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:27:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2299 transitions. [2020-10-13 09:27:05,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-13 09:27:05,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:05,371 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:27:05,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:27:05,371 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:05,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:05,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1583044173, now seen corresponding path program 1 times [2020-10-13 09:27:05,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:05,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287809224] [2020-10-13 09:27:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:05,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:05,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:06,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:06,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-13 09:27:06,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:27:06,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-13 09:27:06,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:27:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 09:27:06,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:27:06,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:06,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:06,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:06,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:27:06,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:06,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:06,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:27:06,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:06,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:06,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:27:06,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:06,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:27:06,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:06,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:06,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:06,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:06,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:27:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:27:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:06,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:06,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:27:06,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:06,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 09:27:06,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:06,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:06,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:06,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:27:06,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 09:27:06,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287809224] [2020-10-13 09:27:06,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:06,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:27:06,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107719301] [2020-10-13 09:27:06,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:27:06,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:06,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:27:06,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:06,946 INFO L87 Difference]: Start difference. First operand 1881 states and 2299 transitions. Second operand 5 states. [2020-10-13 09:27:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:14,906 INFO L93 Difference]: Finished difference Result 3766 states and 4877 transitions. [2020-10-13 09:27:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:14,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-13 09:27:14,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:14,921 INFO L225 Difference]: With dead ends: 3766 [2020-10-13 09:27:14,921 INFO L226 Difference]: Without dead ends: 2324 [2020-10-13 09:27:14,925 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 09:27:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2020-10-13 09:27:14,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 2319. [2020-10-13 09:27:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2319 states. [2020-10-13 09:27:14,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3007 transitions. [2020-10-13 09:27:14,990 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3007 transitions. Word has length 215 [2020-10-13 09:27:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:14,991 INFO L479 AbstractCegarLoop]: Abstraction has 2319 states and 3007 transitions. [2020-10-13 09:27:14,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:27:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3007 transitions. [2020-10-13 09:27:14,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 09:27:14,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:14,996 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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 09:27:14,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:27:14,996 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:14,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:14,997 INFO L82 PathProgramCache]: Analyzing trace with hash -706440303, now seen corresponding path program 1 times [2020-10-13 09:27:14,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:14,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079193557] [2020-10-13 09:27:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:15,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:15,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:15,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:19,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:19,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 09:27:19,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:27:19,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4676 [2020-10-13 09:27:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:27:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:27:19,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:27:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:19,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:19,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:19,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:19,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:27:19,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:19,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:19,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:19,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:27:19,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:27:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:19,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:19,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:27:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:20,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:20,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:27:20,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:27:20,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:27:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:27:20,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079193557] [2020-10-13 09:27:20,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:20,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:27:20,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634035405] [2020-10-13 09:27:20,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:27:20,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:20,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:27:20,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:20,252 INFO L87 Difference]: Start difference. First operand 2319 states and 3007 transitions. Second operand 5 states. [2020-10-13 09:27:29,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:29,291 INFO L93 Difference]: Finished difference Result 4220 states and 5597 transitions. [2020-10-13 09:27:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:29,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-13 09:27:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:29,306 INFO L225 Difference]: With dead ends: 4220 [2020-10-13 09:27:29,307 INFO L226 Difference]: Without dead ends: 2324 [2020-10-13 09:27:29,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 09:27:29,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2020-10-13 09:27:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 2319. [2020-10-13 09:27:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2319 states. [2020-10-13 09:27:29,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3004 transitions. [2020-10-13 09:27:29,374 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3004 transitions. Word has length 217 [2020-10-13 09:27:29,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:29,375 INFO L479 AbstractCegarLoop]: Abstraction has 2319 states and 3004 transitions. [2020-10-13 09:27:29,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:27:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3004 transitions. [2020-10-13 09:27:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-13 09:27:29,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:29,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:27:29,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:27:29,379 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:29,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:29,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1143787033, now seen corresponding path program 1 times [2020-10-13 09:27:29,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:29,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111905724] [2020-10-13 09:27:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:29,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:29,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:30,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:30,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-13 09:27:30,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:27:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1474 [2020-10-13 09:27:30,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 09:27:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:27:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:31,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:31,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:31,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:31,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:31,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:31,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:27:31,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:31,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:31,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:31,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:31,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:31,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:31,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:27:31,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:27:31,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:31,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:31,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:27:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:27:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:31,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:31,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:31,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:27:31,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:31,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 09:27:31,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:31,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:31,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:27:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:27:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:27:31,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111905724] [2020-10-13 09:27:31,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:31,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:27:31,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114023835] [2020-10-13 09:27:31,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:27:31,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:31,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:27:31,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:31,625 INFO L87 Difference]: Start difference. First operand 2319 states and 3004 transitions. Second operand 5 states. [2020-10-13 09:27:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:41,100 INFO L93 Difference]: Finished difference Result 4251 states and 5622 transitions. [2020-10-13 09:27:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:41,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-13 09:27:41,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:41,113 INFO L225 Difference]: With dead ends: 4251 [2020-10-13 09:27:41,113 INFO L226 Difference]: Without dead ends: 2324 [2020-10-13 09:27:41,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 09:27:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2020-10-13 09:27:41,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 2319. [2020-10-13 09:27:41,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2319 states. [2020-10-13 09:27:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3001 transitions. [2020-10-13 09:27:41,192 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3001 transitions. Word has length 221 [2020-10-13 09:27:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:41,192 INFO L479 AbstractCegarLoop]: Abstraction has 2319 states and 3001 transitions. [2020-10-13 09:27:41,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:27:41,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3001 transitions. [2020-10-13 09:27:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-13 09:27:41,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:41,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:27:41,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:27:41,198 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:41,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:41,198 INFO L82 PathProgramCache]: Analyzing trace with hash 916218034, now seen corresponding path program 1 times [2020-10-13 09:27:41,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:41,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638623389] [2020-10-13 09:27:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:42,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:42,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-13 09:27:42,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:27:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1305 [2020-10-13 09:27:42,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:27:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 09:27:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 09:27:42,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:42,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:27:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:42,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:42,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:27:42,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:27:42,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:42,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:27:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:42,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:42,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:27:42,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:42,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:27:42,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:27:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:27:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:27:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:27:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:42,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:27:42,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:27:42,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:27:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 09:27:42,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:27:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:27:42,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:27:42,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:27:42,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:27:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:27:43,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638623389] [2020-10-13 09:27:43,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:27:43,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:27:43,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805731559] [2020-10-13 09:27:43,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:27:43,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:27:43,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:27:43,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:27:43,084 INFO L87 Difference]: Start difference. First operand 2319 states and 3001 transitions. Second operand 5 states. [2020-10-13 09:27:58,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:27:58,589 INFO L93 Difference]: Finished difference Result 5571 states and 7363 transitions. [2020-10-13 09:27:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:27:58,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-13 09:27:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:27:58,611 INFO L225 Difference]: With dead ends: 5571 [2020-10-13 09:27:58,611 INFO L226 Difference]: Without dead ends: 3691 [2020-10-13 09:27:58,618 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 09:27:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2020-10-13 09:27:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3247. [2020-10-13 09:27:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3247 states. [2020-10-13 09:27:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 4292 transitions. [2020-10-13 09:27:58,701 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 4292 transitions. Word has length 234 [2020-10-13 09:27:58,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:27:58,701 INFO L479 AbstractCegarLoop]: Abstraction has 3247 states and 4292 transitions. [2020-10-13 09:27:58,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:27:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 4292 transitions. [2020-10-13 09:27:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-13 09:27:58,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:27:58,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:27:58,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:27:58,707 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:27:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:27:58,707 INFO L82 PathProgramCache]: Analyzing trace with hash -10391527, now seen corresponding path program 1 times [2020-10-13 09:27:58,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:27:58,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027410829] [2020-10-13 09:27:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:27:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:27:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:27:58,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:00,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:00,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:00,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-13 09:28:00,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:28:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1860 [2020-10-13 09:28:00,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-13 09:28:00,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:28:00,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:28:00,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:00,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:00,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:00,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:28:00,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:00,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:00,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:00,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:28:00,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:00,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:28:00,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:00,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:00,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:00,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:28:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:00,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:00,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:28:00,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:00,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 09:28:00,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:28:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:28:01,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027410829] [2020-10-13 09:28:01,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:01,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:28:01,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354390217] [2020-10-13 09:28:01,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:28:01,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:01,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:28:01,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:28:01,120 INFO L87 Difference]: Start difference. First operand 3247 states and 4292 transitions. Second operand 5 states. [2020-10-13 09:28:11,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:11,854 INFO L93 Difference]: Finished difference Result 6536 states and 8641 transitions. [2020-10-13 09:28:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:28:11,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-13 09:28:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:11,874 INFO L225 Difference]: With dead ends: 6536 [2020-10-13 09:28:11,874 INFO L226 Difference]: Without dead ends: 3251 [2020-10-13 09:28:11,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 09:28:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2020-10-13 09:28:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 3247. [2020-10-13 09:28:11,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3247 states. [2020-10-13 09:28:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 4287 transitions. [2020-10-13 09:28:11,960 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 4287 transitions. Word has length 237 [2020-10-13 09:28:11,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:11,961 INFO L479 AbstractCegarLoop]: Abstraction has 3247 states and 4287 transitions. [2020-10-13 09:28:11,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:28:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 4287 transitions. [2020-10-13 09:28:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-13 09:28:11,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:11,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:28:11,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:28:11,967 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:11,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:11,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1740254732, now seen corresponding path program 1 times [2020-10-13 09:28:11,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:11,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231639762] [2020-10-13 09:28:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:12,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:14,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:14,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:28:14,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:28:14,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2351 [2020-10-13 09:28:14,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-13 09:28:14,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 09:28:14,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:14,613 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-10-13 09:28:14,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:14,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:14,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:14,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:14,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:28:14,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:14,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:14,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:14,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:14,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:14,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:14,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:14,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:14,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:28:14,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:14,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:28:14,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:14,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:14,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:14,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:14,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:28:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:14,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:14,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 09:28:14,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-13 09:28:14,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:28:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:28:15,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231639762] [2020-10-13 09:28:15,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:15,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:28:15,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662476143] [2020-10-13 09:28:15,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:28:15,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:15,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:28:15,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:28:15,194 INFO L87 Difference]: Start difference. First operand 3247 states and 4287 transitions. Second operand 5 states. [2020-10-13 09:28:24,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:24,592 INFO L93 Difference]: Finished difference Result 6515 states and 8607 transitions. [2020-10-13 09:28:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:28:24,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 263 [2020-10-13 09:28:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:24,613 INFO L225 Difference]: With dead ends: 6515 [2020-10-13 09:28:24,613 INFO L226 Difference]: Without dead ends: 3251 [2020-10-13 09:28:24,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:28:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2020-10-13 09:28:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 3247. [2020-10-13 09:28:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3247 states. [2020-10-13 09:28:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 4271 transitions. [2020-10-13 09:28:24,703 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 4271 transitions. Word has length 263 [2020-10-13 09:28:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:24,704 INFO L479 AbstractCegarLoop]: Abstraction has 3247 states and 4271 transitions. [2020-10-13 09:28:24,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:28:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 4271 transitions. [2020-10-13 09:28:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-13 09:28:24,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:24,711 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 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 09:28:24,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:28:24,711 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:24,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1406616955, now seen corresponding path program 1 times [2020-10-13 09:28:24,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:24,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227936284] [2020-10-13 09:28:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:25,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:25,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:28,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:28,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-13 09:28:28,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:28:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3888 [2020-10-13 09:28:28,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:28,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:28:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:28:28,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:28,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:28,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:28,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:28,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:28:28,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:28:28,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:28,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:28,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:28:28,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 09:28:28,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:28,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:28,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:28:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:28,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:28,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:28:28,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:28,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 09:28:28,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:28:28,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:29,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 09:28:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:29,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:29,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:29,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:28:29,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:29,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:28:29,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:28:29,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:28:29,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:28:29,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227936284] [2020-10-13 09:28:29,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:29,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:28:29,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438805252] [2020-10-13 09:28:29,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:28:29,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:29,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:28:29,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:28:29,274 INFO L87 Difference]: Start difference. First operand 3247 states and 4271 transitions. Second operand 7 states. [2020-10-13 09:28:46,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:28:46,803 INFO L93 Difference]: Finished difference Result 8841 states and 11954 transitions. [2020-10-13 09:28:46,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:28:46,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-10-13 09:28:46,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:28:46,830 INFO L225 Difference]: With dead ends: 8841 [2020-10-13 09:28:46,830 INFO L226 Difference]: Without dead ends: 5137 [2020-10-13 09:28:46,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:28:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5137 states. [2020-10-13 09:28:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5137 to 5084. [2020-10-13 09:28:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2020-10-13 09:28:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6758 transitions. [2020-10-13 09:28:46,964 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6758 transitions. Word has length 286 [2020-10-13 09:28:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:28:46,964 INFO L479 AbstractCegarLoop]: Abstraction has 5084 states and 6758 transitions. [2020-10-13 09:28:46,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:28:46,965 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6758 transitions. [2020-10-13 09:28:46,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-13 09:28:46,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:28:46,971 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:28:46,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:28:46,972 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:28:46,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:28:46,972 INFO L82 PathProgramCache]: Analyzing trace with hash -983413735, now seen corresponding path program 1 times [2020-10-13 09:28:46,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:28:46,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959265587] [2020-10-13 09:28:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:28:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:47,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:47,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:48,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:48,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-13 09:28:48,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:28:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1847 [2020-10-13 09:28:48,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:28:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:28:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:28:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:48,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:48,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:28:48,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:28:48,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:48,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:28:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:49,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:49,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:28:49,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:49,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:28:49,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:28:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:28:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:28:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:49,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:28:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:49,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:49,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:49,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:28:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:28:49,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:28:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:28:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:28:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:49,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 09:28:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:28:49,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:28:49,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:28:49,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:28:49,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:28:49,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 09:28:49,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:28:49,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:28:49,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 09:28:49,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:28:49,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:28:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 218 proven. 72 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 09:28:49,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959265587] [2020-10-13 09:28:49,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:28:49,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:28:49,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780927445] [2020-10-13 09:28:49,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:28:49,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:28:49,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:28:49,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:28:49,422 INFO L87 Difference]: Start difference. First operand 5084 states and 6758 transitions. Second operand 7 states. [2020-10-13 09:29:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:09,322 INFO L93 Difference]: Finished difference Result 12948 states and 17966 transitions. [2020-10-13 09:29:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:29:09,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-13 09:29:09,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:09,358 INFO L225 Difference]: With dead ends: 12948 [2020-10-13 09:29:09,358 INFO L226 Difference]: Without dead ends: 7869 [2020-10-13 09:29:09,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:29:09,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7869 states. [2020-10-13 09:29:09,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7869 to 7852. [2020-10-13 09:29:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7852 states. [2020-10-13 09:29:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7852 states to 7852 states and 10513 transitions. [2020-10-13 09:29:09,576 INFO L78 Accepts]: Start accepts. Automaton has 7852 states and 10513 transitions. Word has length 291 [2020-10-13 09:29:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:09,577 INFO L479 AbstractCegarLoop]: Abstraction has 7852 states and 10513 transitions. [2020-10-13 09:29:09,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:29:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 7852 states and 10513 transitions. [2020-10-13 09:29:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-13 09:29:09,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:09,586 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:29:09,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:29:09,587 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:09,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2068395475, now seen corresponding path program 1 times [2020-10-13 09:29:09,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:09,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351505509] [2020-10-13 09:29:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:09,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:12,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:12,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-13 09:29:12,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:29:12,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3012 [2020-10-13 09:29:12,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-13 09:29:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 09:29:12,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:12,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:12,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:12,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:12,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:12,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:29:12,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:12,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:12,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:12,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:12,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:29:12,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:29:12,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:12,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:29:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:12,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:12,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:12,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:29:12,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:29:12,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:29:12,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 09:29:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:13,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:13,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:29:13,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:13,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:29:13,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:29:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:29:13,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 09:29:13,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351505509] [2020-10-13 09:29:13,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:13,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:29:13,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470188751] [2020-10-13 09:29:13,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:29:13,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:13,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:29:13,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:29:13,154 INFO L87 Difference]: Start difference. First operand 7852 states and 10513 transitions. Second operand 7 states. [2020-10-13 09:29:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:29:34,316 INFO L93 Difference]: Finished difference Result 21207 states and 28733 transitions. [2020-10-13 09:29:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:29:34,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-13 09:29:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:29:34,395 INFO L225 Difference]: With dead ends: 21207 [2020-10-13 09:29:34,395 INFO L226 Difference]: Without dead ends: 12923 [2020-10-13 09:29:34,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:29:34,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12923 states. [2020-10-13 09:29:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12923 to 11987. [2020-10-13 09:29:34,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11987 states. [2020-10-13 09:29:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11987 states to 11987 states and 15635 transitions. [2020-10-13 09:29:34,811 INFO L78 Accepts]: Start accepts. Automaton has 11987 states and 15635 transitions. Word has length 301 [2020-10-13 09:29:34,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:29:34,812 INFO L479 AbstractCegarLoop]: Abstraction has 11987 states and 15635 transitions. [2020-10-13 09:29:34,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:29:34,812 INFO L276 IsEmpty]: Start isEmpty. Operand 11987 states and 15635 transitions. [2020-10-13 09:29:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-13 09:29:34,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:29:34,822 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-10-13 09:29:34,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:29:34,823 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:29:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:29:34,823 INFO L82 PathProgramCache]: Analyzing trace with hash 58087890, now seen corresponding path program 1 times [2020-10-13 09:29:34,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:29:34,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991906558] [2020-10-13 09:29:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:29:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:35,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:37,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:37,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-13 09:29:37,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:29:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2172 [2020-10-13 09:29:37,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-13 09:29:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 09:29:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:29:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:37,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:37,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:37,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:29:37,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:37,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:29:37,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:37,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:37,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:37,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:29:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:37,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:37,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:29:37,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:29:37,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:29:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:37,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:29:37,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:29:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:37,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:37,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:29:37,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:29:37,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:29:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:29:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:29:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:37,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-13 09:29:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:29:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:29:37,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:29:37,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:29:37,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:29:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:29:37,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:29:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:29:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:29:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:29:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:29:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 09:29:37,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991906558] [2020-10-13 09:29:37,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:29:37,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:29:37,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767879867] [2020-10-13 09:29:37,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:29:37,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:29:37,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:29:37,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:29:37,635 INFO L87 Difference]: Start difference. First operand 11987 states and 15635 transitions. Second operand 7 states. [2020-10-13 09:30:05,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:30:05,535 INFO L93 Difference]: Finished difference Result 30290 states and 40777 transitions. [2020-10-13 09:30:05,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:30:05,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-13 09:30:05,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:30:05,609 INFO L225 Difference]: With dead ends: 30290 [2020-10-13 09:30:05,609 INFO L226 Difference]: Without dead ends: 17871 [2020-10-13 09:30:05,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:30:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17871 states. [2020-10-13 09:30:06,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17871 to 16933. [2020-10-13 09:30:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16933 states. [2020-10-13 09:30:06,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16933 states to 16933 states and 21701 transitions. [2020-10-13 09:30:06,899 INFO L78 Accepts]: Start accepts. Automaton has 16933 states and 21701 transitions. Word has length 304 [2020-10-13 09:30:06,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:30:06,900 INFO L479 AbstractCegarLoop]: Abstraction has 16933 states and 21701 transitions. [2020-10-13 09:30:06,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:30:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 16933 states and 21701 transitions. [2020-10-13 09:30:06,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-13 09:30:06,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:06,909 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:06,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:30:06,910 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:06,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:06,910 INFO L82 PathProgramCache]: Analyzing trace with hash -982120146, now seen corresponding path program 1 times [2020-10-13 09:30:06,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:06,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43148847] [2020-10-13 09:30:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:07,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:07,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking...