/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/Problem03_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:18:38,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:18:38,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:18:38,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:18:38,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:18:38,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:18:39,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:18:39,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:18:39,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:18:39,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:18:39,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:18:39,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:18:39,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:18:39,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:18:39,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:18:39,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:18:39,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:18:39,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:18:39,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:18:39,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:18:39,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:18:39,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:18:39,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:18:39,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:18:39,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:18:39,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:18:39,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:18:39,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:18:39,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:18:39,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:18:39,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:18:39,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:18:39,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:18:39,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:18:39,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:18:39,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:18:39,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:18:39,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:18:39,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:18:39,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:18:39,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:18:39,068 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 06:18:39,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:18:39,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:18:39,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:18:39,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:18:39,111 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:18:39,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:18:39,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:18:39,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:18:39,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:18:39,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:18:39,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:18:39,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:18:39,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:18:39,114 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:18:39,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:18:39,114 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:18:39,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:18:39,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:18:39,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:18:39,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:18:39,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:18:39,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:18:39,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:18:39,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:18:39,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:18:39,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:18:39,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:18:39,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:18:39,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:18:39,117 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 06:18:39,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:18:39,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:18:39,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:18:39,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:18:39,468 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:18:39,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2020-10-13 06:18:39,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/854d613f8/ad6cf8a1d2774841a371a1d841f3691e/FLAG744c114bb [2020-10-13 06:18:40,190 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:18:40,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2020-10-13 06:18:40,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/854d613f8/ad6cf8a1d2774841a371a1d841f3691e/FLAG744c114bb [2020-10-13 06:18:40,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/854d613f8/ad6cf8a1d2774841a371a1d841f3691e [2020-10-13 06:18:40,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:18:40,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:18:40,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:18:40,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:18:40,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:18:40,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:18:40" (1/1) ... [2020-10-13 06:18:40,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2fc715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:40, skipping insertion in model container [2020-10-13 06:18:40,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:18:40" (1/1) ... [2020-10-13 06:18:40,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:18:40,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:18:41,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:18:41,422 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:18:41,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:18:41,740 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:18:41,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:41 WrapperNode [2020-10-13 06:18:41,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:18:41,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:18:41,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:18:41,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:18:41,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:41" (1/1) ... [2020-10-13 06:18:41,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:41" (1/1) ... [2020-10-13 06:18:41,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:41" (1/1) ... [2020-10-13 06:18:41,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:41" (1/1) ... [2020-10-13 06:18:41,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:41" (1/1) ... [2020-10-13 06:18:41,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:41" (1/1) ... [2020-10-13 06:18:41,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:41" (1/1) ... [2020-10-13 06:18:41,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:18:41,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:18:41,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:18:41,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:18:41,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:41" (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 06:18:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:18:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:18:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:18:42,039 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:18:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:18:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:18:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:18:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:18:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:18:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:18:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:18:43,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:18:43,975 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:18:43,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:18:43 BoogieIcfgContainer [2020-10-13 06:18:43,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:18:43,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:18:43,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:18:43,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:18:43,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:18:40" (1/3) ... [2020-10-13 06:18:43,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18289fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:18:43, skipping insertion in model container [2020-10-13 06:18:43,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:18:41" (2/3) ... [2020-10-13 06:18:43,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18289fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:18:43, skipping insertion in model container [2020-10-13 06:18:43,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:18:43" (3/3) ... [2020-10-13 06:18:43,992 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label24.c [2020-10-13 06:18:44,003 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:18:44,012 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:18:44,027 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:18:44,056 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:18:44,056 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:18:44,056 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:18:44,057 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:18:44,057 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:18:44,057 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:18:44,057 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:18:44,057 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:18:44,085 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:18:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-13 06:18:44,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:44,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:44,105 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:44,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:44,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1879577704, now seen corresponding path program 1 times [2020-10-13 06:18:44,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:44,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712295073] [2020-10-13 06:18:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:48,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:48,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-13 06:18:48,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:18:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3943 [2020-10-13 06:18:48,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:18:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:18:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:18:48,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:18:49,723 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-13 06:18:49,896 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-13 06:18:50,117 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2020-10-13 06:18:50,317 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2020-10-13 06:18:50,553 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2020-10-13 06:18:50,787 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2020-10-13 06:18:50,993 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2020-10-13 06:18:51,177 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2020-10-13 06:18:51,316 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2020-10-13 06:18:51,602 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:18:51,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:18:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:51,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:51,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:18:51,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:18:51,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:18:51,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 06:18:51,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:18:51,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:18:51,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:18:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:18:51,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:18:52,284 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 06:18:52,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712295073] [2020-10-13 06:18:52,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:18:52,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 06:18:52,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896718591] [2020-10-13 06:18:52,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 06:18:52,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:18:52,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 06:18:52,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:18:52,311 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-13 06:18:52,779 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 06:18:53,696 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 193 [2020-10-13 06:18:54,700 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 193 [2020-10-13 06:18:55,783 WARN L193 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 213 [2020-10-13 06:18:57,302 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 257 DAG size of output: 210 [2020-10-13 06:18:58,770 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 257 DAG size of output: 207 [2020-10-13 06:19:00,698 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 257 DAG size of output: 204 [2020-10-13 06:19:04,200 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 258 DAG size of output: 201 [2020-10-13 06:19:05,759 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 258 DAG size of output: 196 [2020-10-13 06:19:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:08,164 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:19:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:19:08,166 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 197 [2020-10-13 06:19:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:08,185 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:19:08,185 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:19:08,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2020-10-13 06:19:08,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:19:08,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:19:08,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:19:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:19:08,274 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 197 [2020-10-13 06:19:08,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:08,275 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:19:08,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 06:19:08,276 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:19:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-13 06:19:08,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:08,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:08,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:19:08,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:08,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:08,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1350270209, now seen corresponding path program 1 times [2020-10-13 06:19:08,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:08,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175569578] [2020-10-13 06:19:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:08,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:12,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:12,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 06:19:12,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:12,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3959 [2020-10-13 06:19:12,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 06:19:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:19:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:19:12,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:13,440 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-13 06:19:13,782 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:13,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:13,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:13,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:13,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:19:13,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:13,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:19:13,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:13,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:13,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:14,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:14,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:19:14,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 06:19:14,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:19:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:19:14,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:14,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175569578] [2020-10-13 06:19:14,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:14,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 06:19:14,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672856381] [2020-10-13 06:19:14,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 06:19:14,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:14,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 06:19:14,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:19:14,721 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-13 06:19:14,971 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-13 06:19:15,444 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 83 [2020-10-13 06:19:15,855 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-10-13 06:19:16,369 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 168 [2020-10-13 06:19:16,926 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 176 [2020-10-13 06:19:17,897 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 175 [2020-10-13 06:19:19,683 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 174 [2020-10-13 06:19:22,141 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 173 [2020-10-13 06:19:25,461 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 172 [2020-10-13 06:19:26,167 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 170 [2020-10-13 06:19:29,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:29,578 INFO L93 Difference]: Finished difference Result 980 states and 1587 transitions. [2020-10-13 06:19:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 06:19:29,582 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 208 [2020-10-13 06:19:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:29,597 INFO L225 Difference]: With dead ends: 980 [2020-10-13 06:19:29,598 INFO L226 Difference]: Without dead ends: 737 [2020-10-13 06:19:29,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2020-10-13 06:19:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-13 06:19:29,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 729. [2020-10-13 06:19:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-13 06:19:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 983 transitions. [2020-10-13 06:19:29,661 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 983 transitions. Word has length 208 [2020-10-13 06:19:29,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:29,662 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 983 transitions. [2020-10-13 06:19:29,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 06:19:29,662 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 983 transitions. [2020-10-13 06:19:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-13 06:19:29,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:29,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:29,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:19:29,669 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:29,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:29,670 INFO L82 PathProgramCache]: Analyzing trace with hash 695151155, now seen corresponding path program 1 times [2020-10-13 06:19:29,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:29,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438307787] [2020-10-13 06:19:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:29,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:31,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:31,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 06:19:31,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:19:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-13 06:19:31,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:19:31,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 06:19:31,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:31,620 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:31,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:31,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:31,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:31,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:31,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:31,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:19:31,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:31,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:31,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:31,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:31,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:31,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:19:31,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:19:31,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:31,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:19:31,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:19:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:32,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438307787] [2020-10-13 06:19:32,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:32,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:19:32,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99142848] [2020-10-13 06:19:32,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:19:32,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:32,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:19:32,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:19:32,284 INFO L87 Difference]: Start difference. First operand 729 states and 983 transitions. Second operand 5 states. [2020-10-13 06:19:32,605 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-13 06:19:35,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:35,042 INFO L93 Difference]: Finished difference Result 1157 states and 1710 transitions. [2020-10-13 06:19:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:19:35,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-13 06:19:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:35,049 INFO L225 Difference]: With dead ends: 1157 [2020-10-13 06:19:35,049 INFO L226 Difference]: Without dead ends: 721 [2020-10-13 06:19:35,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 06:19:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-10-13 06:19:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 717. [2020-10-13 06:19:35,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-10-13 06:19:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 924 transitions. [2020-10-13 06:19:35,078 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 924 transitions. Word has length 218 [2020-10-13 06:19:35,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:35,079 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 924 transitions. [2020-10-13 06:19:35,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:19:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 924 transitions. [2020-10-13 06:19:35,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-13 06:19:35,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:35,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:35,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:19:35,085 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:35,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1150152911, now seen corresponding path program 1 times [2020-10-13 06:19:35,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:35,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602636120] [2020-10-13 06:19:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:35,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:36,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:38,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:38,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-13 06:19:38,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2924 [2020-10-13 06:19:38,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:19:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:19:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 06:19:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:38,637 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 34 [2020-10-13 06:19:38,767 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:38,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:38,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:38,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:38,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:19:38,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:38,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:38,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:38,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:38,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:19:38,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:19:38,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:38,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:38,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:19:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:19:39,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602636120] [2020-10-13 06:19:39,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:39,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 06:19:39,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404425137] [2020-10-13 06:19:39,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 06:19:39,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:39,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 06:19:39,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 06:19:39,363 INFO L87 Difference]: Start difference. First operand 717 states and 924 transitions. Second operand 6 states. [2020-10-13 06:19:39,758 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 06:19:40,177 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-13 06:19:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:42,937 INFO L93 Difference]: Finished difference Result 1336 states and 1909 transitions. [2020-10-13 06:19:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:19:42,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2020-10-13 06:19:42,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:42,945 INFO L225 Difference]: With dead ends: 1336 [2020-10-13 06:19:42,945 INFO L226 Difference]: Without dead ends: 1002 [2020-10-13 06:19:42,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:19:42,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-10-13 06:19:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 912. [2020-10-13 06:19:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-10-13 06:19:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1130 transitions. [2020-10-13 06:19:42,983 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1130 transitions. Word has length 232 [2020-10-13 06:19:42,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:42,984 INFO L479 AbstractCegarLoop]: Abstraction has 912 states and 1130 transitions. [2020-10-13 06:19:42,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 06:19:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1130 transitions. [2020-10-13 06:19:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 06:19:42,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:42,990 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:42,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:19:42,991 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:42,991 INFO L82 PathProgramCache]: Analyzing trace with hash -590673504, now seen corresponding path program 1 times [2020-10-13 06:19:42,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:42,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552850163] [2020-10-13 06:19:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:43,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:45,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:48,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:48,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 06:19:48,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:19:48,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 06:19:48,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 06:19:48,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:19:48,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:48,213 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:48,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:48,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:48,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:48,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:19:48,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:48,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:48,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:19:48,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:19:48,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:48,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 06:19:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:19:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:48,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:48,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:19:48,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:19:48,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:19:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:19:48,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552850163] [2020-10-13 06:19:48,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:48,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:48,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643847963] [2020-10-13 06:19:48,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:48,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:48,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:48,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:48,479 INFO L87 Difference]: Start difference. First operand 912 states and 1130 transitions. Second operand 7 states. [2020-10-13 06:19:48,792 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:49,329 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:19:52,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:52,961 INFO L93 Difference]: Finished difference Result 2659 states and 3600 transitions. [2020-10-13 06:19:52,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:52,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-13 06:19:52,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:52,975 INFO L225 Difference]: With dead ends: 2659 [2020-10-13 06:19:52,976 INFO L226 Difference]: Without dead ends: 1856 [2020-10-13 06:19:52,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2020-10-13 06:19:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1832. [2020-10-13 06:19:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1832 states. [2020-10-13 06:19:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 2356 transitions. [2020-10-13 06:19:53,071 INFO L78 Accepts]: Start accepts. Automaton has 1832 states and 2356 transitions. Word has length 242 [2020-10-13 06:19:53,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:53,071 INFO L479 AbstractCegarLoop]: Abstraction has 1832 states and 2356 transitions. [2020-10-13 06:19:53,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:53,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1832 states and 2356 transitions. [2020-10-13 06:19:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-13 06:19:53,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:53,082 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:53,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:19:53,083 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:53,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:53,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1918441779, now seen corresponding path program 1 times [2020-10-13 06:19:53,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:53,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121073267] [2020-10-13 06:19:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:54,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:55,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:55,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 06:19:55,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:19:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2343 [2020-10-13 06:19:55,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:19:55,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:19:55,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:19:55,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:55,617 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:19:55,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:19:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:55,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:55,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:55,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:19:55,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:19:55,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:19:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:19:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:19:55,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:55,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:19:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:55,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:55,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:55,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:19:55,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:55,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 06:19:55,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:55,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:19:55,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:19:55,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:19:55,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:19:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:55,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:55,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:19:55,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:19:55,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:19:55,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:19:55,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:19:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:19:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 06:19:55,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:19:55,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:19:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:19:55,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121073267] [2020-10-13 06:19:55,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:19:55,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:19:55,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431818056] [2020-10-13 06:19:55,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:19:55,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:19:55,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:19:55,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:19:55,910 INFO L87 Difference]: Start difference. First operand 1832 states and 2356 transitions. Second operand 7 states. [2020-10-13 06:19:56,045 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:19:57,689 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:19:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:19:59,017 INFO L93 Difference]: Finished difference Result 5177 states and 7062 transitions. [2020-10-13 06:19:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:19:59,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-13 06:19:59,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:19:59,044 INFO L225 Difference]: With dead ends: 5177 [2020-10-13 06:19:59,044 INFO L226 Difference]: Without dead ends: 3458 [2020-10-13 06:19:59,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:19:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3458 states. [2020-10-13 06:19:59,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3458 to 3357. [2020-10-13 06:19:59,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3357 states. [2020-10-13 06:19:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 4380 transitions. [2020-10-13 06:19:59,187 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 4380 transitions. Word has length 243 [2020-10-13 06:19:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:19:59,187 INFO L479 AbstractCegarLoop]: Abstraction has 3357 states and 4380 transitions. [2020-10-13 06:19:59,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:19:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 4380 transitions. [2020-10-13 06:19:59,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-13 06:19:59,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:19:59,204 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:19:59,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:19:59,204 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:19:59,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:19:59,205 INFO L82 PathProgramCache]: Analyzing trace with hash -421348499, now seen corresponding path program 1 times [2020-10-13 06:19:59,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:19:59,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795708317] [2020-10-13 06:19:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:19:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:19:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:19:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:01,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:04,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:04,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-13 06:20:04,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4894 [2020-10-13 06:20:04,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:04,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 06:20:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 06:20:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:04,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:04,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:04,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:04,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:20:04,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:04,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:04,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:04,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:20:04,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:04,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 06:20:04,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:04,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 06:20:04,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:04,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:20:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:04,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:04,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:04,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 06:20:04,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:04,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-13 06:20:04,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 06:20:04,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:05,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795708317] [2020-10-13 06:20:05,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:05,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:05,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339218595] [2020-10-13 06:20:05,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:05,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:05,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:05,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:05,086 INFO L87 Difference]: Start difference. First operand 3357 states and 4380 transitions. Second operand 7 states. [2020-10-13 06:20:05,433 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:06,518 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:20:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:08,518 INFO L93 Difference]: Finished difference Result 5823 states and 8298 transitions. [2020-10-13 06:20:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:08,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-13 06:20:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:08,543 INFO L225 Difference]: With dead ends: 5823 [2020-10-13 06:20:08,543 INFO L226 Difference]: Without dead ends: 4206 [2020-10-13 06:20:08,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:20:08,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2020-10-13 06:20:08,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 4065. [2020-10-13 06:20:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4065 states. [2020-10-13 06:20:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 5474 transitions. [2020-10-13 06:20:08,700 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 5474 transitions. Word has length 290 [2020-10-13 06:20:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:08,700 INFO L479 AbstractCegarLoop]: Abstraction has 4065 states and 5474 transitions. [2020-10-13 06:20:08,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 5474 transitions. [2020-10-13 06:20:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-13 06:20:08,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:08,722 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:08,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:20:08,722 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:08,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1546001590, now seen corresponding path program 1 times [2020-10-13 06:20:08,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:08,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823159968] [2020-10-13 06:20:08,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:08,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:12,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:12,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-13 06:20:12,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:20:12,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3180 [2020-10-13 06:20:12,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:20:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-13 06:20:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:12,270 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:12,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:12,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:12,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:12,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:12,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:12,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:20:12,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:12,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:12,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:12,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:12,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:12,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 06:20:12,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:12,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:20:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:20:12,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823159968] [2020-10-13 06:20:12,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:12,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:20:12,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141054799] [2020-10-13 06:20:12,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:20:12,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:12,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:20:12,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:20:12,665 INFO L87 Difference]: Start difference. First operand 4065 states and 5474 transitions. Second operand 5 states. [2020-10-13 06:20:13,143 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:14,788 INFO L93 Difference]: Finished difference Result 9124 states and 12638 transitions. [2020-10-13 06:20:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:20:14,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2020-10-13 06:20:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:14,816 INFO L225 Difference]: With dead ends: 9124 [2020-10-13 06:20:14,816 INFO L226 Difference]: Without dead ends: 5180 [2020-10-13 06:20:14,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 06:20:14,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2020-10-13 06:20:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 5144. [2020-10-13 06:20:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5144 states. [2020-10-13 06:20:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 7150 transitions. [2020-10-13 06:20:15,002 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 7150 transitions. Word has length 297 [2020-10-13 06:20:15,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:15,002 INFO L479 AbstractCegarLoop]: Abstraction has 5144 states and 7150 transitions. [2020-10-13 06:20:15,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:20:15,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 7150 transitions. [2020-10-13 06:20:15,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 06:20:15,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:15,030 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:15,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:20:15,031 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:15,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1880022735, now seen corresponding path program 1 times [2020-10-13 06:20:15,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:15,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266433053] [2020-10-13 06:20:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:15,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:16,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:17,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:17,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 06:20:17,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:20:17,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2838 [2020-10-13 06:20:17,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:20:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:20:17,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:18,101 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:18,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:18,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:18,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:18,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:18,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:20:18,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:18,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:18,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:18,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:18,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:18,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:18,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 06:20:18,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:20:18,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:18,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:20:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:18,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:18,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:18,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 06:20:18,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:20:18,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:20:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:18,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266433053] [2020-10-13 06:20:18,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:18,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:18,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577576574] [2020-10-13 06:20:18,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:18,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:18,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:18,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:18,479 INFO L87 Difference]: Start difference. First operand 5144 states and 7150 transitions. Second operand 7 states. [2020-10-13 06:20:18,831 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:20:19,908 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:20:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:21,718 INFO L93 Difference]: Finished difference Result 9272 states and 14543 transitions. [2020-10-13 06:20:21,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:20:21,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-13 06:20:21,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:21,760 INFO L225 Difference]: With dead ends: 9272 [2020-10-13 06:20:21,761 INFO L226 Difference]: Without dead ends: 6290 [2020-10-13 06:20:21,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:20:21,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6290 states. [2020-10-13 06:20:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6290 to 6051. [2020-10-13 06:20:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6051 states. [2020-10-13 06:20:22,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6051 states to 6051 states and 8725 transitions. [2020-10-13 06:20:22,034 INFO L78 Accepts]: Start accepts. Automaton has 6051 states and 8725 transitions. Word has length 310 [2020-10-13 06:20:22,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:22,035 INFO L479 AbstractCegarLoop]: Abstraction has 6051 states and 8725 transitions. [2020-10-13 06:20:22,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:22,035 INFO L276 IsEmpty]: Start isEmpty. Operand 6051 states and 8725 transitions. [2020-10-13 06:20:22,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 06:20:22,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:22,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:22,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:20:22,071 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:22,072 INFO L82 PathProgramCache]: Analyzing trace with hash 603321282, now seen corresponding path program 1 times [2020-10-13 06:20:22,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:22,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478221876] [2020-10-13 06:20:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:22,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:22,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:23,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:26,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:26,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 06:20:26,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:26,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4264 [2020-10-13 06:20:26,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:20:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:20:26,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:26,579 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:26,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:26,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:26,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:26,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:26,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:20:26,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:26,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:26,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:26,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:26,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:26,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 06:20:26,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:26,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:26,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:26,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:20:26,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:26,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:20:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:26,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:26,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:20:26,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:20:26,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:26,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:26,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:26,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:20:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:26,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478221876] [2020-10-13 06:20:26,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:26,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:26,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520432069] [2020-10-13 06:20:26,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:26,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:26,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:26,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:26,959 INFO L87 Difference]: Start difference. First operand 6051 states and 8725 transitions. Second operand 7 states. [2020-10-13 06:20:27,207 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:20:27,561 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:20:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:31,212 INFO L93 Difference]: Finished difference Result 21548 states and 32506 transitions. [2020-10-13 06:20:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:20:31,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-13 06:20:31,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:31,295 INFO L225 Difference]: With dead ends: 21548 [2020-10-13 06:20:31,296 INFO L226 Difference]: Without dead ends: 15606 [2020-10-13 06:20:31,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:20:31,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15606 states. [2020-10-13 06:20:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15606 to 15260. [2020-10-13 06:20:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15260 states. [2020-10-13 06:20:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15260 states to 15260 states and 21611 transitions. [2020-10-13 06:20:31,939 INFO L78 Accepts]: Start accepts. Automaton has 15260 states and 21611 transitions. Word has length 311 [2020-10-13 06:20:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:31,939 INFO L479 AbstractCegarLoop]: Abstraction has 15260 states and 21611 transitions. [2020-10-13 06:20:31,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:31,939 INFO L276 IsEmpty]: Start isEmpty. Operand 15260 states and 21611 transitions. [2020-10-13 06:20:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-13 06:20:32,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:32,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:32,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:20:32,005 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:32,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:32,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1816425198, now seen corresponding path program 1 times [2020-10-13 06:20:32,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:32,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079045599] [2020-10-13 06:20:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:33,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:36,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:36,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-13 06:20:36,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:36,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4321 [2020-10-13 06:20:36,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:36,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:36,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:20:36,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:20:36,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:36,636 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:36,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:36,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:36,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:36,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:20:36,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:36,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:36,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:36,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:37,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:37,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:20:37,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-13 06:20:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:37,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:20:37,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:37,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:20:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:37,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:37,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:37,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:20:37,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:37,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:20:37,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:37,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:20:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:20:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:37,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079045599] [2020-10-13 06:20:37,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:37,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:20:37,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562525486] [2020-10-13 06:20:37,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:20:37,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:37,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:20:37,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:20:37,488 INFO L87 Difference]: Start difference. First operand 15260 states and 21611 transitions. Second operand 8 states. [2020-10-13 06:20:37,636 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:20:38,531 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:20:38,705 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:20:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:42,363 INFO L93 Difference]: Finished difference Result 38675 states and 55577 transitions. [2020-10-13 06:20:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 06:20:42,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 317 [2020-10-13 06:20:42,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:42,476 INFO L225 Difference]: With dead ends: 38675 [2020-10-13 06:20:42,477 INFO L226 Difference]: Without dead ends: 23544 [2020-10-13 06:20:42,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:20:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23544 states. [2020-10-13 06:20:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23544 to 22896. [2020-10-13 06:20:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22896 states. [2020-10-13 06:20:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22896 states to 22896 states and 30932 transitions. [2020-10-13 06:20:43,242 INFO L78 Accepts]: Start accepts. Automaton has 22896 states and 30932 transitions. Word has length 317 [2020-10-13 06:20:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:43,243 INFO L479 AbstractCegarLoop]: Abstraction has 22896 states and 30932 transitions. [2020-10-13 06:20:43,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:20:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 22896 states and 30932 transitions. [2020-10-13 06:20:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-13 06:20:43,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:43,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:20:43,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:20:43,289 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:43,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:43,289 INFO L82 PathProgramCache]: Analyzing trace with hash 395893074, now seen corresponding path program 1 times [2020-10-13 06:20:43,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:43,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230702976] [2020-10-13 06:20:43,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:43,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:48,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:48,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-13 06:20:48,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:20:48,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-13 06:20:48,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:48,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:48,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-13 06:20:48,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:20:48,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:48,866 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:48,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:48,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:48,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:48,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:20:48,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:48,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:49,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:49,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:20:49,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 06:20:49,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 06:20:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:49,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:20:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:49,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:49,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:49,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:20:49,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:20:49,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:20:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:20:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:20:49,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230702976] [2020-10-13 06:20:49,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:20:49,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:20:49,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314927620] [2020-10-13 06:20:49,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:20:49,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:20:49,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:20:49,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:20:49,261 INFO L87 Difference]: Start difference. First operand 22896 states and 30932 transitions. Second operand 7 states. [2020-10-13 06:20:49,962 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:20:50,128 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:20:53,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:20:53,293 INFO L93 Difference]: Finished difference Result 55394 states and 77911 transitions. [2020-10-13 06:20:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:20:53,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2020-10-13 06:20:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:20:53,437 INFO L225 Difference]: With dead ends: 55394 [2020-10-13 06:20:53,437 INFO L226 Difference]: Without dead ends: 32607 [2020-10-13 06:20:53,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:20:53,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32607 states. [2020-10-13 06:20:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32607 to 32282. [2020-10-13 06:20:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32282 states. [2020-10-13 06:20:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32282 states to 32282 states and 42861 transitions. [2020-10-13 06:20:54,338 INFO L78 Accepts]: Start accepts. Automaton has 32282 states and 42861 transitions. Word has length 319 [2020-10-13 06:20:54,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:20:54,339 INFO L479 AbstractCegarLoop]: Abstraction has 32282 states and 42861 transitions. [2020-10-13 06:20:54,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:20:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 32282 states and 42861 transitions. [2020-10-13 06:20:54,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-13 06:20:54,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:20:54,376 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:54,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:20:54,376 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:20:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:20:54,377 INFO L82 PathProgramCache]: Analyzing trace with hash 749300811, now seen corresponding path program 1 times [2020-10-13 06:20:54,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:20:54,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821388385] [2020-10-13 06:20:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:20:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:54,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:59,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:59,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-13 06:20:59,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:20:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 06:20:59,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:20:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:20:59,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:20:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:59,748 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:20:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:20:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:59,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:59,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:59,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:20:59,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:20:59,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:20:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:20:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:20:59,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:20:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:20:59,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:20:59,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:20:59,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:20:59,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:20:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 06:20:59,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:20:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:20:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:20:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:20:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:00,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:21:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:00,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:00,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:00,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:21:00,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:21:00,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:00,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:21:00,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:00,186 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-10-13 06:21:00,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:21:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:00,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:00,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:00,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:21:00,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 06:21:00,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 06:21:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 122 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 06:21:00,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821388385] [2020-10-13 06:21:00,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:00,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:00,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581930897] [2020-10-13 06:21:00,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:00,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:00,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:00,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:00,725 INFO L87 Difference]: Start difference. First operand 32282 states and 42861 transitions. Second operand 7 states. [2020-10-13 06:21:01,427 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:02,093 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 06:21:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:04,920 INFO L93 Difference]: Finished difference Result 60313 states and 86139 transitions. [2020-10-13 06:21:04,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:21:04,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-13 06:21:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:05,089 INFO L225 Difference]: With dead ends: 60313 [2020-10-13 06:21:05,089 INFO L226 Difference]: Without dead ends: 35068 [2020-10-13 06:21:05,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:21:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35068 states. [2020-10-13 06:21:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35068 to 34339. [2020-10-13 06:21:05,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34339 states. [2020-10-13 06:21:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34339 states to 34339 states and 45718 transitions. [2020-10-13 06:21:06,019 INFO L78 Accepts]: Start accepts. Automaton has 34339 states and 45718 transitions. Word has length 321 [2020-10-13 06:21:06,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:06,020 INFO L479 AbstractCegarLoop]: Abstraction has 34339 states and 45718 transitions. [2020-10-13 06:21:06,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand 34339 states and 45718 transitions. [2020-10-13 06:21:06,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-13 06:21:06,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:06,063 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:06,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:21:06,063 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:06,064 INFO L82 PathProgramCache]: Analyzing trace with hash 427182349, now seen corresponding path program 1 times [2020-10-13 06:21:06,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:06,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762185507] [2020-10-13 06:21:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:06,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:06,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:07,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:10,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:11,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:11,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-13 06:21:11,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:21:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 06:21:11,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-13 06:21:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:21:11,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:11,412 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:11,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:11,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:11,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:11,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:11,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:21:11,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:11,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:11,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:11,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:21:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 06:21:11,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:11,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:21:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:11,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:11,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:11,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:21:11,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:11,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 06:21:11,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:11,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:11,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:11,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 06:21:11,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:11,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 06:21:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:11,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:11,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:11,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:21:11,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:11,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 06:21:11,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:11,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:11,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:11,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:21:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:21:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 06:21:12,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762185507] [2020-10-13 06:21:12,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:12,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:12,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328078168] [2020-10-13 06:21:12,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:12,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:12,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:12,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:12,180 INFO L87 Difference]: Start difference. First operand 34339 states and 45718 transitions. Second operand 7 states. [2020-10-13 06:21:12,327 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:13,245 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:21:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:15,408 INFO L93 Difference]: Finished difference Result 60195 states and 81525 transitions. [2020-10-13 06:21:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:21:15,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-13 06:21:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:15,554 INFO L225 Difference]: With dead ends: 60195 [2020-10-13 06:21:15,555 INFO L226 Difference]: Without dead ends: 40178 [2020-10-13 06:21:15,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:21:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40178 states. [2020-10-13 06:21:16,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40178 to 39721. [2020-10-13 06:21:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39721 states. [2020-10-13 06:21:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39721 states to 39721 states and 53812 transitions. [2020-10-13 06:21:16,931 INFO L78 Accepts]: Start accepts. Automaton has 39721 states and 53812 transitions. Word has length 342 [2020-10-13 06:21:16,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:16,931 INFO L479 AbstractCegarLoop]: Abstraction has 39721 states and 53812 transitions. [2020-10-13 06:21:16,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:16,932 INFO L276 IsEmpty]: Start isEmpty. Operand 39721 states and 53812 transitions. [2020-10-13 06:21:16,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-13 06:21:16,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:17,000 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:17,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:21:17,002 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:17,002 INFO L82 PathProgramCache]: Analyzing trace with hash -901640695, now seen corresponding path program 1 times [2020-10-13 06:21:17,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:17,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469879319] [2020-10-13 06:21:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:18,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:19,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:22,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-13 06:21:22,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:21:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 06:21:22,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:21:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:21:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:22,390 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:22,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:22,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:22,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:22,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:22,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:22,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:21:22,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:22,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:22,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:22,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:22,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:22,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:21:22,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:22,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 06:21:22,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:21:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:22,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:21:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:21:22,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 06:21:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:21:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:22,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 06:21:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:22,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:22,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:22,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:21:22,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:22,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:21:22,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:22,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:22,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 06:21:22,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:22,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 172 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:21:22,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469879319] [2020-10-13 06:21:22,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:22,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:22,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091049518] [2020-10-13 06:21:22,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:22,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:22,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:22,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:22,886 INFO L87 Difference]: Start difference. First operand 39721 states and 53812 transitions. Second operand 7 states. [2020-10-13 06:21:23,127 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:21:23,465 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:27,794 INFO L93 Difference]: Finished difference Result 99033 states and 140081 transitions. [2020-10-13 06:21:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:21:27,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-13 06:21:27,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:28,049 INFO L225 Difference]: With dead ends: 99033 [2020-10-13 06:21:28,049 INFO L226 Difference]: Without dead ends: 59837 [2020-10-13 06:21:28,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:21:28,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59837 states. [2020-10-13 06:21:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59837 to 57283. [2020-10-13 06:21:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57283 states. [2020-10-13 06:21:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57283 states to 57283 states and 75483 transitions. [2020-10-13 06:21:29,421 INFO L78 Accepts]: Start accepts. Automaton has 57283 states and 75483 transitions. Word has length 345 [2020-10-13 06:21:29,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:29,421 INFO L479 AbstractCegarLoop]: Abstraction has 57283 states and 75483 transitions. [2020-10-13 06:21:29,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand 57283 states and 75483 transitions. [2020-10-13 06:21:29,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-13 06:21:29,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:29,466 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:29,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:21:29,467 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:29,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:29,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1163247129, now seen corresponding path program 1 times [2020-10-13 06:21:29,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:29,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078089425] [2020-10-13 06:21:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:30,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 06:21:31,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:21:31,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1730 [2020-10-13 06:21:31,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-13 06:21:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:21:31,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,473 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:31,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:31,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:21:31,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:31,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:21:31,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:21:31,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:31,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:31,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:31,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:21:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:21:31,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 06:21:31,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:21:31,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:31,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:21:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:31,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:31,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:31,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:21:31,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:31,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:21:31,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:21:31,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-13 06:21:32,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078089425] [2020-10-13 06:21:32,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:32,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:32,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899826296] [2020-10-13 06:21:32,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:32,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:32,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:32,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:32,275 INFO L87 Difference]: Start difference. First operand 57283 states and 75483 transitions. Second operand 7 states. [2020-10-13 06:21:32,930 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:21:33,267 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:21:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:36,046 INFO L93 Difference]: Finished difference Result 118231 states and 157055 transitions. [2020-10-13 06:21:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 06:21:36,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-13 06:21:36,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:36,312 INFO L225 Difference]: With dead ends: 118231 [2020-10-13 06:21:36,312 INFO L226 Difference]: Without dead ends: 65604 [2020-10-13 06:21:36,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:21:36,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65604 states. [2020-10-13 06:21:37,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65604 to 65434. [2020-10-13 06:21:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65434 states. [2020-10-13 06:21:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65434 states to 65434 states and 86956 transitions. [2020-10-13 06:21:37,759 INFO L78 Accepts]: Start accepts. Automaton has 65434 states and 86956 transitions. Word has length 349 [2020-10-13 06:21:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:37,760 INFO L479 AbstractCegarLoop]: Abstraction has 65434 states and 86956 transitions. [2020-10-13 06:21:37,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 65434 states and 86956 transitions. [2020-10-13 06:21:37,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-13 06:21:37,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:37,844 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:21:37,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:21:37,844 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash 2106808001, now seen corresponding path program 1 times [2020-10-13 06:21:37,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:37,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783040958] [2020-10-13 06:21:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:40,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:41,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:42,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:42,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-13 06:21:42,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:21:42,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 06:21:42,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:42,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:42,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 06:21:42,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:21:42,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:43,152 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:43,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:43,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:43,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:43,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:21:43,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:43,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:43,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:43,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:43,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 06:21:43,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:43,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:21:43,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:43,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:21:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:43,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:43,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:21:43,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 06:21:43,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:21:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:43,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 06:21:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:43,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:43,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:43,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:21:43,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:21:43,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:21:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 06:21:43,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783040958] [2020-10-13 06:21:43,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:43,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:43,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136332519] [2020-10-13 06:21:43,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:43,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:43,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:43,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:43,857 INFO L87 Difference]: Start difference. First operand 65434 states and 86956 transitions. Second operand 7 states. [2020-10-13 06:21:43,993 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:45,147 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:21:47,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:47,304 INFO L93 Difference]: Finished difference Result 125134 states and 166942 transitions. [2020-10-13 06:21:47,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:21:47,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-13 06:21:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:47,515 INFO L225 Difference]: With dead ends: 125134 [2020-10-13 06:21:47,516 INFO L226 Difference]: Without dead ends: 64764 [2020-10-13 06:21:47,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:21:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64764 states. [2020-10-13 06:21:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64764 to 64588. [2020-10-13 06:21:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64588 states. [2020-10-13 06:21:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64588 states to 64588 states and 81985 transitions. [2020-10-13 06:21:48,709 INFO L78 Accepts]: Start accepts. Automaton has 64588 states and 81985 transitions. Word has length 357 [2020-10-13 06:21:48,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:21:48,709 INFO L479 AbstractCegarLoop]: Abstraction has 64588 states and 81985 transitions. [2020-10-13 06:21:48,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:21:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 64588 states and 81985 transitions. [2020-10-13 06:21:48,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-13 06:21:48,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:21:48,768 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:48,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:21:48,769 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:21:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:21:48,769 INFO L82 PathProgramCache]: Analyzing trace with hash 29826790, now seen corresponding path program 1 times [2020-10-13 06:21:48,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:21:48,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017318000] [2020-10-13 06:21:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:21:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:49,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:50,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:52,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:54,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:54,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-13 06:21:54,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:21:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6121 [2020-10-13 06:21:54,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-13 06:21:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:21:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:55,177 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:21:55,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:21:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:55,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:55,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:55,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:21:55,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:21:55,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:55,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:55,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:55,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:55,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:55,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:21:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:55,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:55,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:21:55,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:21:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:55,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:21:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:55,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:55,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 06:21:55,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:55,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 06:21:55,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:55,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:21:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:21:55,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 06:21:55,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 06:21:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:55,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:55,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:21:55,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:55,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:21:55,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:21:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:21:55,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:21:55,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:55,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-13 06:21:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:21:55,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:21:55,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:21:55,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:21:55,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:21:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:21:55,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:21:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:21:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 06:21:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:21:55,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:21:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 188 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 06:21:55,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017318000] [2020-10-13 06:21:55,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:21:55,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:21:55,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677176532] [2020-10-13 06:21:55,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:21:55,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:21:55,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:21:55,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:21:55,643 INFO L87 Difference]: Start difference. First operand 64588 states and 81985 transitions. Second operand 7 states. [2020-10-13 06:21:55,781 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:21:56,869 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:21:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:21:59,189 INFO L93 Difference]: Finished difference Result 122156 states and 153696 transitions. [2020-10-13 06:21:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:21:59,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-13 06:21:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:21:59,346 INFO L225 Difference]: With dead ends: 122156 [2020-10-13 06:21:59,346 INFO L226 Difference]: Without dead ends: 69702 [2020-10-13 06:21:59,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:21:59,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69702 states. [2020-10-13 06:22:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69702 to 67747. [2020-10-13 06:22:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67747 states. [2020-10-13 06:22:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67747 states to 67747 states and 86338 transitions. [2020-10-13 06:22:00,905 INFO L78 Accepts]: Start accepts. Automaton has 67747 states and 86338 transitions. Word has length 376 [2020-10-13 06:22:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:22:00,905 INFO L479 AbstractCegarLoop]: Abstraction has 67747 states and 86338 transitions. [2020-10-13 06:22:00,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:22:00,906 INFO L276 IsEmpty]: Start isEmpty. Operand 67747 states and 86338 transitions. [2020-10-13 06:22:00,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-13 06:22:00,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:22:00,996 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:22:00,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:22:00,997 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:22:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:22:00,997 INFO L82 PathProgramCache]: Analyzing trace with hash -880807166, now seen corresponding path program 1 times [2020-10-13 06:22:00,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:22:00,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860571583] [2020-10-13 06:22:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:22:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:01,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:06,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:06,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-13 06:22:06,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:22:06,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 06:22:06,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 06:22:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-13 06:22:06,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 06:22:06,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:06,286 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:22:06,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:22:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:06,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:06,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:22:06,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:06,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:22:06,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:06,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:22:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:06,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:06,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:22:06,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:22:06,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:22:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:22:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:06,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:22:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:06,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:06,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:06,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 06:22:06,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:06,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 06:22:06,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:06,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 06:22:06,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:22:06,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 06:22:06,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 06:22:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:06,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:06,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:06,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:22:06,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:06,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 06:22:06,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 06:22:06,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 06:22:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:22:06,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:22:06,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:22:06,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:22:06,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:22:06,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:22:06,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:22:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:22:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:22:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:22:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:22:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 232 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 06:22:06,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860571583] [2020-10-13 06:22:06,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:22:06,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 06:22:06,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478382143] [2020-10-13 06:22:06,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 06:22:06,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:22:06,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 06:22:06,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:22:06,968 INFO L87 Difference]: Start difference. First operand 67747 states and 86338 transitions. Second operand 9 states. [2020-10-13 06:22:07,112 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:22:07,495 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:22:08,361 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131