/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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:14:36,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:14:36,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:14:36,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:14:36,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:14:36,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:14:36,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:14:36,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:14:36,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:14:36,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:14:36,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:14:36,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:14:36,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:14:36,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:14:37,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:14:37,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:14:37,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:14:37,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:14:37,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:14:37,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:14:37,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:14:37,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:14:37,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:14:37,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:14:37,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:14:37,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:14:37,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:14:37,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:14:37,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:14:37,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:14:37,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:14:37,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:14:37,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:14:37,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:14:37,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:14:37,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:14:37,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:14:37,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:14:37,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:14:37,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:14:37,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:14:37,024 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 06:14:37,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:14:37,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:14:37,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:14:37,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:14:37,049 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:14:37,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:14:37,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:14:37,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:14:37,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:14:37,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:14:37,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:14:37,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:14:37,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:14:37,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:14:37,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:14:37,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:14:37,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:14:37,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:14:37,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:14:37,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:14:37,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:14:37,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:14:37,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:14:37,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:14:37,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:14:37,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:14:37,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:14:37,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:14:37,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:14:37,054 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 06:14:37,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:14:37,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:14:37,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:14:37,386 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:14:37,387 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:14:37,388 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label05.c [2020-10-13 06:14:37,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b84088673/79e6ed5b6f2241e8a82224e2d94a4cca/FLAG694995b46 [2020-10-13 06:14:38,168 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:14:38,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label05.c [2020-10-13 06:14:38,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b84088673/79e6ed5b6f2241e8a82224e2d94a4cca/FLAG694995b46 [2020-10-13 06:14:38,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b84088673/79e6ed5b6f2241e8a82224e2d94a4cca [2020-10-13 06:14:38,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:14:38,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:14:38,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:14:38,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:14:38,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:14:38,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:14:38" (1/1) ... [2020-10-13 06:14:38,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:38, skipping insertion in model container [2020-10-13 06:14:38,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:14:38" (1/1) ... [2020-10-13 06:14:38,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:14:38,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:14:39,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:14:39,303 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:14:39,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:14:39,701 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:14:39,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:39 WrapperNode [2020-10-13 06:14:39,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:14:39,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:14:39,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:14:39,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:14:39,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:39" (1/1) ... [2020-10-13 06:14:39,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:39" (1/1) ... [2020-10-13 06:14:39,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:39" (1/1) ... [2020-10-13 06:14:39,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:39" (1/1) ... [2020-10-13 06:14:39,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:39" (1/1) ... [2020-10-13 06:14:39,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:39" (1/1) ... [2020-10-13 06:14:39,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:39" (1/1) ... [2020-10-13 06:14:39,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:14:39,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:14:39,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:14:39,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:14:39,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:39" (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 06:14:39,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:14:39,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:14:39,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:14:39,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:14:39,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:14:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:14:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:14:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:14:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:14:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:14:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:14:41,993 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:14:41,994 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:14:42,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:14:42 BoogieIcfgContainer [2020-10-13 06:14:42,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:14:42,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:14:42,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:14:42,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:14:42,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:14:38" (1/3) ... [2020-10-13 06:14:42,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f6a109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:14:42, skipping insertion in model container [2020-10-13 06:14:42,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:14:39" (2/3) ... [2020-10-13 06:14:42,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f6a109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:14:42, skipping insertion in model container [2020-10-13 06:14:42,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:14:42" (3/3) ... [2020-10-13 06:14:42,009 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label05.c [2020-10-13 06:14:42,020 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:14:42,028 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:14:42,042 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:14:42,069 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:14:42,069 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:14:42,070 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:14:42,070 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:14:42,070 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:14:42,070 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:14:42,070 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:14:42,070 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:14:42,107 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-13 06:14:42,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 06:14:42,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:14:42,128 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] [2020-10-13 06:14:42,129 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:14:42,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:14:42,136 INFO L82 PathProgramCache]: Analyzing trace with hash 693071197, now seen corresponding path program 1 times [2020-10-13 06:14:42,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:14:42,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191414477] [2020-10-13 06:14:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:14:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:43,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:46,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:46,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 06:14:46,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:14:46,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3947 [2020-10-13 06:14:46,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 06:14:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:14:46,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 06:14:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:14:47,597 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 63 [2020-10-13 06:14:48,091 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-13 06:14:48,283 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-13 06:14:48,459 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-13 06:14:48,615 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-13 06:14:48,747 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-13 06:14:49,012 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:14:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:14:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:14:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:14:49,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:14:49,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:14:49,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:14:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:14:49,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:14:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:14:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:14:49,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:14:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:14:49,286 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-10-13 06:14:49,858 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 06:14:49,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191414477] [2020-10-13 06:14:49,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:14:49,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 06:14:49,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198078441] [2020-10-13 06:14:49,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 06:14:49,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:14:49,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 06:14:49,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:14:49,878 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 14 states. [2020-10-13 06:14:50,277 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 06:14:50,978 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 185 [2020-10-13 06:14:51,749 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 185 [2020-10-13 06:14:52,587 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 205 [2020-10-13 06:14:53,453 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 202 [2020-10-13 06:14:54,548 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 199 [2020-10-13 06:14:55,779 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 196 [2020-10-13 06:14:58,794 WARN L193 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 193 [2020-10-13 06:14:59,961 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 188 [2020-10-13 06:15:02,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:02,256 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-13 06:15:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:15:02,260 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 164 [2020-10-13 06:15:02,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:02,279 INFO L225 Difference]: With dead ends: 737 [2020-10-13 06:15:02,279 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 06:15:02,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-10-13 06:15:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 06:15:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-13 06:15:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-13 06:15:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-13 06:15:02,367 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 164 [2020-10-13 06:15:02,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:02,368 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-13 06:15:02,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 06:15:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-13 06:15:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-13 06:15:02,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:02,380 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] [2020-10-13 06:15:02,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:15:02,381 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1335095574, now seen corresponding path program 1 times [2020-10-13 06:15:02,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:02,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678825666] [2020-10-13 06:15:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:02,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:03,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:06,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:06,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 06:15:06,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:15:06,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3578 [2020-10-13 06:15:06,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:15:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:15:06,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:06,411 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:06,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:06,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:06,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:15:06,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:06,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:06,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:06,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:06,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:15:06,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:06,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 06:15:06,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:15:06,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:15:06,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678825666] [2020-10-13 06:15:06,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:06,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:15:06,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417963013] [2020-10-13 06:15:06,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:15:06,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:06,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:15:06,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:15:06,615 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 5 states. [2020-10-13 06:15:06,744 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:09,013 INFO L93 Difference]: Finished difference Result 824 states and 1284 transitions. [2020-10-13 06:15:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:15:09,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-13 06:15:09,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:09,023 INFO L225 Difference]: With dead ends: 824 [2020-10-13 06:15:09,023 INFO L226 Difference]: Without dead ends: 581 [2020-10-13 06:15:09,025 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 06:15:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-13 06:15:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 579. [2020-10-13 06:15:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2020-10-13 06:15:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 866 transitions. [2020-10-13 06:15:09,069 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 866 transitions. Word has length 175 [2020-10-13 06:15:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:09,070 INFO L479 AbstractCegarLoop]: Abstraction has 579 states and 866 transitions. [2020-10-13 06:15:09,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:15:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 866 transitions. [2020-10-13 06:15:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 06:15:09,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:09,076 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-13 06:15:09,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:15:09,077 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:09,077 INFO L82 PathProgramCache]: Analyzing trace with hash 939204257, now seen corresponding path program 1 times [2020-10-13 06:15:09,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:09,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768437493] [2020-10-13 06:15:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:09,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:09,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:13,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:13,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 06:15:13,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:15:13,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4106 [2020-10-13 06:15:13,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:15:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:15:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:13,404 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:13,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:13,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:13,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:13,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:13,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:13,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:15:13,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:13,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:13,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:13,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:13,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:13,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:15:13,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:15:13,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:13,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:13,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:15:13,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:15:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:13,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:13,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 06:15:13,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:13,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:15:13,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 06:15:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:13,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768437493] [2020-10-13 06:15:13,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:13,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:15:13,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922205305] [2020-10-13 06:15:13,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:15:13,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:13,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:15:13,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:15:13,809 INFO L87 Difference]: Start difference. First operand 579 states and 866 transitions. Second operand 7 states. [2020-10-13 06:15:14,012 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:14,678 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:17,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:17,143 INFO L93 Difference]: Finished difference Result 1269 states and 1988 transitions. [2020-10-13 06:15:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:15:17,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-13 06:15:17,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:17,151 INFO L225 Difference]: With dead ends: 1269 [2020-10-13 06:15:17,151 INFO L226 Difference]: Without dead ends: 811 [2020-10-13 06:15:17,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:15:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2020-10-13 06:15:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 797. [2020-10-13 06:15:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2020-10-13 06:15:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1051 transitions. [2020-10-13 06:15:17,211 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1051 transitions. Word has length 184 [2020-10-13 06:15:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:17,211 INFO L479 AbstractCegarLoop]: Abstraction has 797 states and 1051 transitions. [2020-10-13 06:15:17,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:15:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1051 transitions. [2020-10-13 06:15:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-13 06:15:17,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:17,219 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] [2020-10-13 06:15:17,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:15:17,219 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:17,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1097219230, now seen corresponding path program 1 times [2020-10-13 06:15:17,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:17,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580046522] [2020-10-13 06:15:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:17,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:18,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:18,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 06:15:18,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:15:18,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-10-13 06:15:18,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:18,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:18,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 06:15:18,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:19,256 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:19,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:19,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:19,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:19,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:19,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:19,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:15:19,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:19,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:19,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:19,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:19,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:19,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 06:15:19,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:19,470 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 06:15:19,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580046522] [2020-10-13 06:15:19,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:19,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:15:19,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883530152] [2020-10-13 06:15:19,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:15:19,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:19,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:15:19,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:15:19,473 INFO L87 Difference]: Start difference. First operand 797 states and 1051 transitions. Second operand 5 states. [2020-10-13 06:15:19,627 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:15:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:22,239 INFO L93 Difference]: Finished difference Result 2130 states and 2910 transitions. [2020-10-13 06:15:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:15:22,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-13 06:15:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:22,256 INFO L225 Difference]: With dead ends: 2130 [2020-10-13 06:15:22,256 INFO L226 Difference]: Without dead ends: 1454 [2020-10-13 06:15:22,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 06:15:22,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-10-13 06:15:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1440. [2020-10-13 06:15:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-10-13 06:15:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1913 transitions. [2020-10-13 06:15:22,331 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1913 transitions. Word has length 185 [2020-10-13 06:15:22,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:22,333 INFO L479 AbstractCegarLoop]: Abstraction has 1440 states and 1913 transitions. [2020-10-13 06:15:22,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:15:22,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1913 transitions. [2020-10-13 06:15:22,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 06:15:22,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:22,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:22,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:15:22,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:22,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:22,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1097326011, now seen corresponding path program 1 times [2020-10-13 06:15:22,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:22,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565298475] [2020-10-13 06:15:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:22,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:23,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:25,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:25,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 06:15:25,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:15:25,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3524 [2020-10-13 06:15:25,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 06:15:25,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:26,050 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:26,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:26,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:26,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:15:26,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:26,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:26,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:26,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:26,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:26,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:26,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:26,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:15:26,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:15:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:26,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:26,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:26,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:15:26,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 06:15:26,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:15:26,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:26,320 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:26,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565298475] [2020-10-13 06:15:26,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:26,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:15:26,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245056276] [2020-10-13 06:15:26,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:15:26,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:26,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:15:26,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:15:26,323 INFO L87 Difference]: Start difference. First operand 1440 states and 1913 transitions. Second operand 7 states. [2020-10-13 06:15:26,482 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:15:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:28,106 INFO L93 Difference]: Finished difference Result 2736 states and 3685 transitions. [2020-10-13 06:15:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 06:15:28,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-13 06:15:28,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:28,116 INFO L225 Difference]: With dead ends: 2736 [2020-10-13 06:15:28,116 INFO L226 Difference]: Without dead ends: 1417 [2020-10-13 06:15:28,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 06:15:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2020-10-13 06:15:28,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1417. [2020-10-13 06:15:28,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1417 states. [2020-10-13 06:15:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1844 transitions. [2020-10-13 06:15:28,175 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1844 transitions. Word has length 202 [2020-10-13 06:15:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:28,175 INFO L479 AbstractCegarLoop]: Abstraction has 1417 states and 1844 transitions. [2020-10-13 06:15:28,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:15:28,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1844 transitions. [2020-10-13 06:15:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 06:15:28,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:28,184 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:28,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:15:28,184 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:28,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:28,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1164878573, now seen corresponding path program 1 times [2020-10-13 06:15:28,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:28,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662402019] [2020-10-13 06:15:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:31,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:31,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-13 06:15:31,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:15:31,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2945 [2020-10-13 06:15:31,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 06:15:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:15:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 06:15:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:31,370 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:31,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:31,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:31,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:31,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:31,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:15:31,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:31,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:31,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:15:31,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:31,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:31,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:31,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:31,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:15:31,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:15:31,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 06:15:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:15:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:31,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:15:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:31,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:31,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:31,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 06:15:31,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:31,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 06:15:31,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 06:15:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:31,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662402019] [2020-10-13 06:15:31,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:31,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 06:15:31,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313231822] [2020-10-13 06:15:31,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 06:15:31,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:31,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 06:15:31,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-13 06:15:31,794 INFO L87 Difference]: Start difference. First operand 1417 states and 1844 transitions. Second operand 10 states. [2020-10-13 06:15:31,935 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:15:32,303 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2020-10-13 06:15:33,978 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 131 [2020-10-13 06:15:34,778 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 134 [2020-10-13 06:15:35,037 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 129 [2020-10-13 06:15:36,903 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-13 06:15:39,492 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:15:40,032 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:15:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:41,971 INFO L93 Difference]: Finished difference Result 7214 states and 10544 transitions. [2020-10-13 06:15:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 06:15:41,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 210 [2020-10-13 06:15:41,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:42,011 INFO L225 Difference]: With dead ends: 7214 [2020-10-13 06:15:42,011 INFO L226 Difference]: Without dead ends: 5918 [2020-10-13 06:15:42,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=275, Invalid=1057, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 06:15:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5918 states. [2020-10-13 06:15:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5918 to 5739. [2020-10-13 06:15:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5739 states. [2020-10-13 06:15:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5739 states to 5739 states and 7650 transitions. [2020-10-13 06:15:42,225 INFO L78 Accepts]: Start accepts. Automaton has 5739 states and 7650 transitions. Word has length 210 [2020-10-13 06:15:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:42,225 INFO L479 AbstractCegarLoop]: Abstraction has 5739 states and 7650 transitions. [2020-10-13 06:15:42,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 06:15:42,225 INFO L276 IsEmpty]: Start isEmpty. Operand 5739 states and 7650 transitions. [2020-10-13 06:15:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-13 06:15:42,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:42,237 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:42,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:15:42,237 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:42,238 INFO L82 PathProgramCache]: Analyzing trace with hash -882090460, now seen corresponding path program 1 times [2020-10-13 06:15:42,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:42,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812419884] [2020-10-13 06:15:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:42,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:44,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:45,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:46,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:46,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-13 06:15:46,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 06:15:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3999 [2020-10-13 06:15:46,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:15:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:15:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:46,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:46,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:46,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:46,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:46,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:46,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:15:46,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:46,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:46,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:46,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:46,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:46,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:46,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:15:46,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:15:46,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:15:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:46,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:15:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:46,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:46,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:46,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 06:15:46,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 06:15:46,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 06:15:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:46,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812419884] [2020-10-13 06:15:46,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:46,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:15:46,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170891051] [2020-10-13 06:15:46,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:15:46,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:46,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:15:46,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:15:46,844 INFO L87 Difference]: Start difference. First operand 5739 states and 7650 transitions. Second operand 8 states. [2020-10-13 06:15:46,993 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:15:47,923 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:15:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:49,612 INFO L93 Difference]: Finished difference Result 11425 states and 15384 transitions. [2020-10-13 06:15:49,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:15:49,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-10-13 06:15:49,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:49,701 INFO L225 Difference]: With dead ends: 11425 [2020-10-13 06:15:49,701 INFO L226 Difference]: Without dead ends: 5807 [2020-10-13 06:15:49,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:15:49,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2020-10-13 06:15:49,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5765. [2020-10-13 06:15:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5765 states. [2020-10-13 06:15:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5765 states to 5765 states and 7656 transitions. [2020-10-13 06:15:49,862 INFO L78 Accepts]: Start accepts. Automaton has 5765 states and 7656 transitions. Word has length 252 [2020-10-13 06:15:49,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:49,862 INFO L479 AbstractCegarLoop]: Abstraction has 5765 states and 7656 transitions. [2020-10-13 06:15:49,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:15:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5765 states and 7656 transitions. [2020-10-13 06:15:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-13 06:15:49,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:49,875 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:49,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:15:49,875 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:49,876 INFO L82 PathProgramCache]: Analyzing trace with hash -171152600, now seen corresponding path program 1 times [2020-10-13 06:15:49,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:49,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922601677] [2020-10-13 06:15:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:50,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:50,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:51,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:54,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:54,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-13 06:15:54,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:15:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4094 [2020-10-13 06:15:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:15:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 06:15:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:54,301 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:15:54,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:54,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:54,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:54,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:54,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:15:54,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:54,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:54,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:54,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:54,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:15:54,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:54,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:15:54,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:54,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:15:54,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:15:54,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:15:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:54,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:54,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 06:15:54,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 06:15:54,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:15:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 06:15:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:15:54,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922601677] [2020-10-13 06:15:54,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:15:54,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:15:54,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240585366] [2020-10-13 06:15:54,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:15:54,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:15:54,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:15:54,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:15:54,702 INFO L87 Difference]: Start difference. First operand 5765 states and 7656 transitions. Second operand 7 states. [2020-10-13 06:15:54,849 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:15:55,769 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:15:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:15:57,602 INFO L93 Difference]: Finished difference Result 15769 states and 21604 transitions. [2020-10-13 06:15:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:15:57,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-13 06:15:57,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:15:57,648 INFO L225 Difference]: With dead ends: 15769 [2020-10-13 06:15:57,648 INFO L226 Difference]: Without dead ends: 10125 [2020-10-13 06:15:57,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 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 06:15:57,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10125 states. [2020-10-13 06:15:57,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10125 to 10067. [2020-10-13 06:15:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10067 states. [2020-10-13 06:15:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10067 states to 10067 states and 13351 transitions. [2020-10-13 06:15:57,950 INFO L78 Accepts]: Start accepts. Automaton has 10067 states and 13351 transitions. Word has length 257 [2020-10-13 06:15:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:15:57,950 INFO L479 AbstractCegarLoop]: Abstraction has 10067 states and 13351 transitions. [2020-10-13 06:15:57,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:15:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 10067 states and 13351 transitions. [2020-10-13 06:15:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-13 06:15:57,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:15:57,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:15:57,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:15:57,971 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:15:57,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:15:57,972 INFO L82 PathProgramCache]: Analyzing trace with hash -141398724, now seen corresponding path program 1 times [2020-10-13 06:15:57,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:15:57,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249511378] [2020-10-13 06:15:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:15:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:58,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:58,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:59,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 06:15:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:15:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1607 [2020-10-13 06:15:59,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:15:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:15:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 06:15:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:59,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:15:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:59,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:59,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:15:59,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:59,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:15:59,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:15:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:15:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:59,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:15:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:59,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:15:59,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:15:59,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:15:59,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:15:59,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 06:15:59,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:15:59,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:15:59,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:15:59,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:15:59,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:15:59,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:15:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:15:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:00,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:00,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:16:00,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:00,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 06:16:00,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:00,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 06:16:00,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:16:00,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249511378] [2020-10-13 06:16:00,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:00,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:00,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381169435] [2020-10-13 06:16:00,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:00,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:00,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:00,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:00,184 INFO L87 Difference]: Start difference. First operand 10067 states and 13351 transitions. Second operand 7 states. [2020-10-13 06:16:00,410 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:00,648 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:04,585 INFO L93 Difference]: Finished difference Result 35997 states and 52512 transitions. [2020-10-13 06:16:04,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:04,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-13 06:16:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:04,755 INFO L225 Difference]: With dead ends: 35997 [2020-10-13 06:16:04,756 INFO L226 Difference]: Without dead ends: 26051 [2020-10-13 06:16:04,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 06:16:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26051 states. [2020-10-13 06:16:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26051 to 24535. [2020-10-13 06:16:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24535 states. [2020-10-13 06:16:05,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24535 states to 24535 states and 32023 transitions. [2020-10-13 06:16:05,508 INFO L78 Accepts]: Start accepts. Automaton has 24535 states and 32023 transitions. Word has length 263 [2020-10-13 06:16:05,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:05,509 INFO L479 AbstractCegarLoop]: Abstraction has 24535 states and 32023 transitions. [2020-10-13 06:16:05,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:05,509 INFO L276 IsEmpty]: Start isEmpty. Operand 24535 states and 32023 transitions. [2020-10-13 06:16:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-13 06:16:05,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:05,552 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:16:05,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:16:05,552 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:05,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:05,553 INFO L82 PathProgramCache]: Analyzing trace with hash 320959364, now seen corresponding path program 1 times [2020-10-13 06:16:05,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:05,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444194458] [2020-10-13 06:16:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:05,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:05,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:09,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:10,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-13 06:16:10,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:16:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 06:16:10,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:10,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:16:10,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:16:10,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:10,815 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:10,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:10,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:10,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:10,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:10,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:10,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:10,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:10,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:10,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:16:10,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:10,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:10,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:10,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:16:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:10,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:10,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:10,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:10,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:16:10,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:10,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:16:10,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:10,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:10,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:10,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:16:10,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 06:16:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:11,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:11,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:11,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:16:11,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 06:16:11,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 06:16:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 119 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:16:11,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444194458] [2020-10-13 06:16:11,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:11,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:11,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894514997] [2020-10-13 06:16:11,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:11,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:11,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:11,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:11,185 INFO L87 Difference]: Start difference. First operand 24535 states and 32023 transitions. Second operand 7 states. [2020-10-13 06:16:11,470 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:12,379 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:16:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:14,157 INFO L93 Difference]: Finished difference Result 55161 states and 72016 transitions. [2020-10-13 06:16:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:14,158 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-13 06:16:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:14,260 INFO L225 Difference]: With dead ends: 55161 [2020-10-13 06:16:14,260 INFO L226 Difference]: Without dead ends: 30771 [2020-10-13 06:16:14,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 06:16:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30771 states. [2020-10-13 06:16:15,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30771 to 30726. [2020-10-13 06:16:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30726 states. [2020-10-13 06:16:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30726 states to 30726 states and 39066 transitions. [2020-10-13 06:16:15,099 INFO L78 Accepts]: Start accepts. Automaton has 30726 states and 39066 transitions. Word has length 277 [2020-10-13 06:16:15,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:15,099 INFO L479 AbstractCegarLoop]: Abstraction has 30726 states and 39066 transitions. [2020-10-13 06:16:15,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:15,100 INFO L276 IsEmpty]: Start isEmpty. Operand 30726 states and 39066 transitions. [2020-10-13 06:16:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-13 06:16:15,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:15,148 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:16:15,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 06:16:15,149 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:15,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1172053280, now seen corresponding path program 1 times [2020-10-13 06:16:15,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:15,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877755432] [2020-10-13 06:16:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:19,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:20,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:20,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-13 06:16:20,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:16:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 06:16:20,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 06:16:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 06:16:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:20,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:20,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:20,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:20,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:20,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:20,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:16:20,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:20,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:20,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:20,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:20,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:20,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:16:20,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:20,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:16:20,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:20,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:16:20,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:20,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 06:16:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:20,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:20,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:16:20,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:16:20,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:16:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 06:16:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:20,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:20,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:16:20,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:20,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 06:16:20,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 06:16:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:20,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 123 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 06:16:20,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877755432] [2020-10-13 06:16:20,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:20,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:20,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798482546] [2020-10-13 06:16:20,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:20,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:20,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:20,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:20,778 INFO L87 Difference]: Start difference. First operand 30726 states and 39066 transitions. Second operand 7 states. [2020-10-13 06:16:20,982 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:16:21,199 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:24,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:24,944 INFO L93 Difference]: Finished difference Result 76377 states and 104159 transitions. [2020-10-13 06:16:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:24,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-13 06:16:24,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:25,129 INFO L225 Difference]: With dead ends: 76377 [2020-10-13 06:16:25,129 INFO L226 Difference]: Without dead ends: 45780 [2020-10-13 06:16:25,200 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 06:16:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45780 states. [2020-10-13 06:16:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45780 to 44747. [2020-10-13 06:16:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44747 states. [2020-10-13 06:16:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44747 states to 44747 states and 55432 transitions. [2020-10-13 06:16:26,346 INFO L78 Accepts]: Start accepts. Automaton has 44747 states and 55432 transitions. Word has length 279 [2020-10-13 06:16:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:26,346 INFO L479 AbstractCegarLoop]: Abstraction has 44747 states and 55432 transitions. [2020-10-13 06:16:26,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 44747 states and 55432 transitions. [2020-10-13 06:16:26,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-13 06:16:26,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:26,706 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:26,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 06:16:26,707 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:26,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:26,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2120018387, now seen corresponding path program 1 times [2020-10-13 06:16:26,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:26,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599162973] [2020-10-13 06:16:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:27,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:28,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:31,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:31,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 06:16:31,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 06:16:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-13 06:16:31,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 06:16:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 06:16:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:32,020 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:32,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:32,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:32,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:32,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:32,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 06:16:32,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:32,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:32,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:32,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:32,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:32,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:32,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:16:32,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:32,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 06:16:32,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:32,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 06:16:32,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:32,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:16:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:32,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:32,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 06:16:32,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 06:16:32,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 06:16:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:32,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 06:16:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:32,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:32,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:32,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:16:32,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:32,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 06:16:32,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 06:16:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 168 proven. 33 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-13 06:16:32,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599162973] [2020-10-13 06:16:32,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:32,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:32,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400343678] [2020-10-13 06:16:32,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:32,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:32,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:32,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:32,513 INFO L87 Difference]: Start difference. First operand 44747 states and 55432 transitions. Second operand 7 states. [2020-10-13 06:16:32,808 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:33,985 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:16:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:35,735 INFO L93 Difference]: Finished difference Result 87603 states and 112202 transitions. [2020-10-13 06:16:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:16:35,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-13 06:16:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:35,889 INFO L225 Difference]: With dead ends: 87603 [2020-10-13 06:16:35,889 INFO L226 Difference]: Without dead ends: 43186 [2020-10-13 06:16:35,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 06:16:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43186 states. [2020-10-13 06:16:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43186 to 42401. [2020-10-13 06:16:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42401 states. [2020-10-13 06:16:36,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42401 states to 42401 states and 50144 transitions. [2020-10-13 06:16:36,914 INFO L78 Accepts]: Start accepts. Automaton has 42401 states and 50144 transitions. Word has length 308 [2020-10-13 06:16:36,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:36,915 INFO L479 AbstractCegarLoop]: Abstraction has 42401 states and 50144 transitions. [2020-10-13 06:16:36,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:36,916 INFO L276 IsEmpty]: Start isEmpty. Operand 42401 states and 50144 transitions. [2020-10-13 06:16:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 06:16:36,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:36,977 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:16:36,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 06:16:36,978 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:36,978 INFO L82 PathProgramCache]: Analyzing trace with hash -276495508, now seen corresponding path program 1 times [2020-10-13 06:16:36,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:36,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270207798] [2020-10-13 06:16:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:37,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:38,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:38,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 06:16:38,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:38,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1295 [2020-10-13 06:16:38,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:16:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:16:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 06:16:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:38,590 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:38,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:38,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:38,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:38,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:38,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:16:38,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:16:38,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:38,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:38,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 06:16:38,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 06:16:38,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:38,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:38,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:38,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 06:16:38,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 06:16:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:38,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:38,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 06:16:38,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 06:16:38,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 06:16:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 154 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:16:39,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270207798] [2020-10-13 06:16:39,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:39,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:16:39,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278504908] [2020-10-13 06:16:39,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:16:39,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:39,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:16:39,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:16:39,297 INFO L87 Difference]: Start difference. First operand 42401 states and 50144 transitions. Second operand 7 states. [2020-10-13 06:16:39,427 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:16:40,004 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:16:42,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:42,035 INFO L93 Difference]: Finished difference Result 102581 states and 120181 transitions. [2020-10-13 06:16:42,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:16:42,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-13 06:16:42,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:42,250 INFO L225 Difference]: With dead ends: 102581 [2020-10-13 06:16:42,250 INFO L226 Difference]: Without dead ends: 61015 [2020-10-13 06:16:42,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 06:16:42,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61015 states. [2020-10-13 06:16:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61015 to 60879. [2020-10-13 06:16:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60879 states. [2020-10-13 06:16:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60879 states to 60879 states and 70649 transitions. [2020-10-13 06:16:43,382 INFO L78 Accepts]: Start accepts. Automaton has 60879 states and 70649 transitions. Word has length 326 [2020-10-13 06:16:43,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:43,382 INFO L479 AbstractCegarLoop]: Abstraction has 60879 states and 70649 transitions. [2020-10-13 06:16:43,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:16:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 60879 states and 70649 transitions. [2020-10-13 06:16:43,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-13 06:16:43,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:43,432 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:43,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 06:16:43,433 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:43,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:43,433 INFO L82 PathProgramCache]: Analyzing trace with hash 635732329, now seen corresponding path program 1 times [2020-10-13 06:16:43,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:43,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193024855] [2020-10-13 06:16:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:43,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:43,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:48,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:48,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-13 06:16:48,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:16:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 06:16:48,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:48,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:48,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 06:16:48,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 06:16:48,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:48,754 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:16:48,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:16:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:48,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:48,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:48,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:16:48,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:48,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:16:48,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:48,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:48,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:16:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:48,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:48,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:48,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:16:48,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:16:48,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:16:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:48,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:48,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:48,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:16:48,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:48,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 06:16:48,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:16:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:16:48,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:16:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:48,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:48,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:48,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:16:48,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:48,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:16:48,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:48,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:16:48,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:16:48,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 06:16:48,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:16:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:49,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:16:49,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 06:16:49,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:16:49,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 06:16:49,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:16:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:16:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:16:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 06:16:49,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:16:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 06:16:49,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193024855] [2020-10-13 06:16:49,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:16:49,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:16:49,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020261929] [2020-10-13 06:16:49,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:16:49,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:16:49,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:16:49,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:16:49,208 INFO L87 Difference]: Start difference. First operand 60879 states and 70649 transitions. Second operand 8 states. [2020-10-13 06:16:49,344 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:16:50,791 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:51,172 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:16:53,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:16:53,596 INFO L93 Difference]: Finished difference Result 149237 states and 176479 transitions. [2020-10-13 06:16:53,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:16:53,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 329 [2020-10-13 06:16:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:16:53,824 INFO L225 Difference]: With dead ends: 149237 [2020-10-13 06:16:53,824 INFO L226 Difference]: Without dead ends: 89165 [2020-10-13 06:16:53,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-13 06:16:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89165 states. [2020-10-13 06:16:55,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89165 to 87546. [2020-10-13 06:16:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87546 states. [2020-10-13 06:16:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87546 states to 87546 states and 100805 transitions. [2020-10-13 06:16:55,447 INFO L78 Accepts]: Start accepts. Automaton has 87546 states and 100805 transitions. Word has length 329 [2020-10-13 06:16:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:16:55,447 INFO L479 AbstractCegarLoop]: Abstraction has 87546 states and 100805 transitions. [2020-10-13 06:16:55,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:16:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 87546 states and 100805 transitions. [2020-10-13 06:16:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-13 06:16:55,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:16:55,495 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 06:16:55,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 06:16:55,495 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:16:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:16:55,496 INFO L82 PathProgramCache]: Analyzing trace with hash 965755819, now seen corresponding path program 1 times [2020-10-13 06:16:55,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:16:55,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574365076] [2020-10-13 06:16:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:16:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:16:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:57,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:16:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:00,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:00,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-13 06:17:00,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:17:00,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 06:17:00,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-13 06:17:00,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 06:17:00,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:00,739 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:00,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:00,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:00,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:00,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:00,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:17:00,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:00,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:00,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:00,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:00,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:17:00,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:00,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:00,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:17:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:00,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:00,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:00,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:17:00,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:00,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 06:17:00,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:00,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:00,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:00,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:00,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:00,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:17:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:00,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:00,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:00,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:17:00,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:00,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:17:00,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:17:00,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:00,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 06:17:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:00,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:01,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:01,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 06:17:01,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:01,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 06:17:01,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:01,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 06:17:01,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:01,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 06:17:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:01,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:01,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:01,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 06:17:01,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 06:17:01,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 06:17:01,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:01,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 258 proven. 30 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-13 06:17:01,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574365076] [2020-10-13 06:17:01,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:01,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:17:01,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944887396] [2020-10-13 06:17:01,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:17:01,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:01,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:17:01,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:17:01,205 INFO L87 Difference]: Start difference. First operand 87546 states and 100805 transitions. Second operand 8 states. [2020-10-13 06:17:01,341 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:02,159 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:04,376 INFO L93 Difference]: Finished difference Result 154801 states and 178438 transitions. [2020-10-13 06:17:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:17:04,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 366 [2020-10-13 06:17:04,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:04,549 INFO L225 Difference]: With dead ends: 154801 [2020-10-13 06:17:04,549 INFO L226 Difference]: Without dead ends: 86605 [2020-10-13 06:17:04,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:17:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86605 states. [2020-10-13 06:17:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86605 to 85595. [2020-10-13 06:17:05,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85595 states. [2020-10-13 06:17:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85595 states to 85595 states and 97426 transitions. [2020-10-13 06:17:05,708 INFO L78 Accepts]: Start accepts. Automaton has 85595 states and 97426 transitions. Word has length 366 [2020-10-13 06:17:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:05,709 INFO L479 AbstractCegarLoop]: Abstraction has 85595 states and 97426 transitions. [2020-10-13 06:17:05,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:17:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand 85595 states and 97426 transitions. [2020-10-13 06:17:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-13 06:17:06,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:06,249 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:17:06,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 06:17:06,249 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:06,250 INFO L82 PathProgramCache]: Analyzing trace with hash -770148962, now seen corresponding path program 1 times [2020-10-13 06:17:06,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:06,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888840957] [2020-10-13 06:17:06,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:06,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:06,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:08,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 06:17:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:17:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1765 [2020-10-13 06:17:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:17:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 06:17:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,226 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:08,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:08,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:08,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:08,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:17:08,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:08,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:08,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:08,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:17:08,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:17:08,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:17:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:17:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:08,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:08,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 06:17:08,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 06:17:08,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:08,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 06:17:08,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 06:17:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:08,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:08,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:08,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 06:17:08,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:08,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 06:17:08,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 06:17:08,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 206 proven. 63 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 06:17:08,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888840957] [2020-10-13 06:17:08,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:08,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:08,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810714531] [2020-10-13 06:17:08,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:08,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:08,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:08,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:08,760 INFO L87 Difference]: Start difference. First operand 85595 states and 97426 transitions. Second operand 7 states. [2020-10-13 06:17:09,003 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:09,874 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:17:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:13,218 INFO L93 Difference]: Finished difference Result 164633 states and 193119 transitions. [2020-10-13 06:17:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:17:13,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-13 06:17:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:13,425 INFO L225 Difference]: With dead ends: 164633 [2020-10-13 06:17:13,425 INFO L226 Difference]: Without dead ends: 87815 [2020-10-13 06:17:13,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 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 06:17:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87815 states. [2020-10-13 06:17:14,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87815 to 86009. [2020-10-13 06:17:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86009 states. [2020-10-13 06:17:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86009 states to 86009 states and 97683 transitions. [2020-10-13 06:17:14,687 INFO L78 Accepts]: Start accepts. Automaton has 86009 states and 97683 transitions. Word has length 369 [2020-10-13 06:17:14,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:14,688 INFO L479 AbstractCegarLoop]: Abstraction has 86009 states and 97683 transitions. [2020-10-13 06:17:14,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:14,688 INFO L276 IsEmpty]: Start isEmpty. Operand 86009 states and 97683 transitions. [2020-10-13 06:17:14,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-13 06:17:14,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:14,755 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:17:14,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 06:17:14,756 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:14,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:14,756 INFO L82 PathProgramCache]: Analyzing trace with hash 943749195, now seen corresponding path program 1 times [2020-10-13 06:17:14,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:14,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794460139] [2020-10-13 06:17:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:15,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:15,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:19,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:19,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-13 06:17:19,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:17:19,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 06:17:19,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:19,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 06:17:19,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 06:17:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:20,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:20,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:20,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:20,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:17:20,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:20,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:20,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:20,160 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 06:17:20,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:20,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:20,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:17:20,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:20,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 06:17:20,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:20,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:20,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:20,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 06:17:20,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:20,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:17:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:20,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:20,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 06:17:20,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:20,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-13 06:17:20,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 06:17:20,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:20,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 06:17:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:20,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:20,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:20,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 06:17:20,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:20,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-13 06:17:20,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 06:17:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:17:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 221 proven. 78 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 06:17:23,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794460139] [2020-10-13 06:17:23,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:23,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:23,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570297313] [2020-10-13 06:17:23,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:23,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:23,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:23,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:23,200 INFO L87 Difference]: Start difference. First operand 86009 states and 97683 transitions. Second operand 7 states. [2020-10-13 06:17:23,347 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:24,663 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:26,346 INFO L93 Difference]: Finished difference Result 173967 states and 199064 transitions. [2020-10-13 06:17:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:17:26,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 384 [2020-10-13 06:17:26,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:26,565 INFO L225 Difference]: With dead ends: 173967 [2020-10-13 06:17:26,565 INFO L226 Difference]: Without dead ends: 107066 [2020-10-13 06:17:26,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 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 06:17:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107066 states. [2020-10-13 06:17:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107066 to 94356. [2020-10-13 06:17:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94356 states. [2020-10-13 06:17:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94356 states to 94356 states and 107819 transitions. [2020-10-13 06:17:28,412 INFO L78 Accepts]: Start accepts. Automaton has 94356 states and 107819 transitions. Word has length 384 [2020-10-13 06:17:28,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:28,413 INFO L479 AbstractCegarLoop]: Abstraction has 94356 states and 107819 transitions. [2020-10-13 06:17:28,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 94356 states and 107819 transitions. [2020-10-13 06:17:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-13 06:17:28,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:28,468 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:28,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 06:17:28,468 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:28,468 INFO L82 PathProgramCache]: Analyzing trace with hash -831807363, now seen corresponding path program 1 times [2020-10-13 06:17:28,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:28,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991476642] [2020-10-13 06:17:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:28,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:28,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:30,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:30,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-13 06:17:30,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:17:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1926 [2020-10-13 06:17:30,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:17:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 06:17:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:30,666 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:30,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:30,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:30,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:30,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:30,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:30,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:17:30,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:30,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:30,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:17:30,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 06:17:30,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:17:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:30,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:17:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:30,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:31,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:31,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 06:17:31,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-13 06:17:31,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-13 06:17:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:17:31,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991476642] [2020-10-13 06:17:31,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:31,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:31,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164624727] [2020-10-13 06:17:31,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:31,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:31,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:31,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:31,632 INFO L87 Difference]: Start difference. First operand 94356 states and 107819 transitions. Second operand 7 states. [2020-10-13 06:17:31,851 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 06:17:32,083 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 06:17:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:35,640 INFO L93 Difference]: Finished difference Result 182558 states and 207944 transitions. [2020-10-13 06:17:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:17:35,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-10-13 06:17:35,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:35,890 INFO L225 Difference]: With dead ends: 182558 [2020-10-13 06:17:35,890 INFO L226 Difference]: Without dead ends: 110439 [2020-10-13 06:17:35,993 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 06:17:36,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110439 states. [2020-10-13 06:17:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110439 to 110241. [2020-10-13 06:17:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110241 states. [2020-10-13 06:17:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110241 states to 110241 states and 124743 transitions. [2020-10-13 06:17:39,795 INFO L78 Accepts]: Start accepts. Automaton has 110241 states and 124743 transitions. Word has length 394 [2020-10-13 06:17:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:39,796 INFO L479 AbstractCegarLoop]: Abstraction has 110241 states and 124743 transitions. [2020-10-13 06:17:39,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand 110241 states and 124743 transitions. [2020-10-13 06:17:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-13 06:17:39,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:39,863 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:17:39,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 06:17:39,864 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:39,864 INFO L82 PathProgramCache]: Analyzing trace with hash -21059244, now seen corresponding path program 1 times [2020-10-13 06:17:39,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:39,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205627632] [2020-10-13 06:17:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:40,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:41,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:44,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:44,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:44,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-13 06:17:44,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:17:44,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-13 06:17:44,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 06:17:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:17:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:45,124 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:45,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:45,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:45,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:45,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:45,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:17:45,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:45,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:45,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:45,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 06:17:45,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 06:17:45,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:45,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 06:17:45,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 06:17:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:45,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:45,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:45,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 06:17:45,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:45,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:17:45,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:17:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 06:17:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:45,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:45,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:45,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 06:17:45,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 06:17:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 06:17:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 236 proven. 7 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 06:17:45,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205627632] [2020-10-13 06:17:45,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:45,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:17:45,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914747329] [2020-10-13 06:17:45,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:17:45,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:45,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:17:45,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:17:45,661 INFO L87 Difference]: Start difference. First operand 110241 states and 124743 transitions. Second operand 7 states. [2020-10-13 06:17:47,002 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 06:17:48,351 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-13 06:17:50,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:17:50,138 INFO L93 Difference]: Finished difference Result 201967 states and 228137 transitions. [2020-10-13 06:17:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:17:50,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 404 [2020-10-13 06:17:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:17:50,371 INFO L225 Difference]: With dead ends: 201967 [2020-10-13 06:17:50,371 INFO L226 Difference]: Without dead ends: 113963 [2020-10-13 06:17:50,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:17:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113963 states. [2020-10-13 06:17:52,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113963 to 113695. [2020-10-13 06:17:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113695 states. [2020-10-13 06:17:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113695 states to 113695 states and 128614 transitions. [2020-10-13 06:17:52,385 INFO L78 Accepts]: Start accepts. Automaton has 113695 states and 128614 transitions. Word has length 404 [2020-10-13 06:17:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:17:52,385 INFO L479 AbstractCegarLoop]: Abstraction has 113695 states and 128614 transitions. [2020-10-13 06:17:52,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:17:52,385 INFO L276 IsEmpty]: Start isEmpty. Operand 113695 states and 128614 transitions. [2020-10-13 06:17:52,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-13 06:17:52,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:17:52,465 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 06:17:52,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 06:17:52,465 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:17:52,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:17:52,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1310304975, now seen corresponding path program 1 times [2020-10-13 06:17:52,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:17:52,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138736812] [2020-10-13 06:17:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:17:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:52,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:57,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:57,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-13 06:17:57,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:17:57,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 06:17:57,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 06:17:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:17:57,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 06:17:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:57,710 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 06:17:57,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:17:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:57,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:57,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:17:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:17:57,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:17:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:17:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:17:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:17:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:57,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:57,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 06:17:57,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:17:57,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:57,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:17:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:57,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 06:17:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:57,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:57,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 06:17:57,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:57,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 06:17:57,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:17:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:17:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 06:17:57,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:57,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 06:17:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:57,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:58,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:58,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 06:17:58,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:58,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 06:17:58,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 06:17:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:58,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 06:17:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:17:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:17:58,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:17:58,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 06:17:58,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:17:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 06:17:58,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:17:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:17:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 06:17:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:17:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:17:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 238 proven. 84 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-13 06:17:58,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138736812] [2020-10-13 06:17:58,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:17:58,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:17:58,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003042210] [2020-10-13 06:17:58,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:17:58,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:17:58,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:17:58,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:17:58,304 INFO L87 Difference]: Start difference. First operand 113695 states and 128614 transitions. Second operand 8 states. [2020-10-13 06:17:58,438 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 06:17:59,817 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-13 06:18:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:18:02,182 INFO L93 Difference]: Finished difference Result 231054 states and 262743 transitions. [2020-10-13 06:18:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:18:02,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 407 [2020-10-13 06:18:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:18:02,415 INFO L225 Difference]: With dead ends: 231054 [2020-10-13 06:18:02,416 INFO L226 Difference]: Without dead ends: 117938 [2020-10-13 06:18:02,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 06:18:02,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117938 states. [2020-10-13 06:18:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117938 to 115304. [2020-10-13 06:18:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115304 states. [2020-10-13 06:18:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115304 states to 115304 states and 129881 transitions. [2020-10-13 06:18:04,018 INFO L78 Accepts]: Start accepts. Automaton has 115304 states and 129881 transitions. Word has length 407 [2020-10-13 06:18:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:18:04,018 INFO L479 AbstractCegarLoop]: Abstraction has 115304 states and 129881 transitions. [2020-10-13 06:18:04,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:18:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 115304 states and 129881 transitions. [2020-10-13 06:18:04,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-13 06:18:04,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:18:04,096 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:04,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 06:18:04,096 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:18:04,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:18:04,097 INFO L82 PathProgramCache]: Analyzing trace with hash 108763681, now seen corresponding path program 1 times [2020-10-13 06:18:04,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:18:04,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361419869] [2020-10-13 06:18:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:18:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:18:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:18:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking...