/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/reducercommutativity/sep40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:16:27,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:16:27,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:16:27,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:16:27,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:16:27,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:16:27,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:16:27,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:16:27,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:16:27,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:16:27,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:16:27,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:16:27,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:16:27,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:16:27,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:16:27,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:16:27,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:16:27,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:16:27,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:16:27,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:16:27,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:16:27,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:16:27,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:16:27,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:16:27,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:16:27,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:16:27,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:16:27,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:16:27,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:16:27,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:16:27,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:16:27,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:16:27,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:16:27,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:16:27,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:16:27,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:16:27,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:16:27,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:16:27,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:16:28,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:16:28,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:16:28,001 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 [2020-10-15 02:16:28,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:16:28,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:16:28,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:16:28,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:16:28,025 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:16:28,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:16:28,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:16:28,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:16:28,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:16:28,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:16:28,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:16:28,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:16:28,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:16:28,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:16:28,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:16:28,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:16:28,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:16:28,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:16:28,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:16:28,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:16:28,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:16:28,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:16:28,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:16:28,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:16:28,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:16:28,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:16:28,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:16:28,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:16:28,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:16:28,030 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:16:28,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:16:28,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:16:28,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:16:28,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:16:28,334 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:16:28,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-15 02:16:28,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72e6f3fd4/349b3841662f44dd95753f5f099fceaa/FLAG0d9f552a4 [2020-10-15 02:16:28,885 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:16:28,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-15 02:16:28,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72e6f3fd4/349b3841662f44dd95753f5f099fceaa/FLAG0d9f552a4 [2020-10-15 02:16:29,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72e6f3fd4/349b3841662f44dd95753f5f099fceaa [2020-10-15 02:16:29,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:16:29,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:16:29,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:16:29,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:16:29,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:16:29,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:16:29" (1/1) ... [2020-10-15 02:16:29,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7e2148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29, skipping insertion in model container [2020-10-15 02:16:29,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:16:29" (1/1) ... [2020-10-15 02:16:29,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:16:29,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:16:29,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:16:29,500 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:16:29,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:16:29,540 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:16:29,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29 WrapperNode [2020-10-15 02:16:29,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:16:29,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:16:29,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:16:29,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:16:29,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29" (1/1) ... [2020-10-15 02:16:29,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29" (1/1) ... [2020-10-15 02:16:29,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29" (1/1) ... [2020-10-15 02:16:29,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29" (1/1) ... [2020-10-15 02:16:29,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29" (1/1) ... [2020-10-15 02:16:29,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29" (1/1) ... [2020-10-15 02:16:29,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29" (1/1) ... [2020-10-15 02:16:29,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:16:29,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:16:29,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:16:29,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:16:29,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29" (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 [2020-10-15 02:16:29,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:16:29,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:16:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-15 02:16:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:16:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:16:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:16:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-15 02:16:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:16:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:16:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:16:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:16:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:16:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:16:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:16:30,014 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:16:30,015 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 02:16:30,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:16:30 BoogieIcfgContainer [2020-10-15 02:16:30,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:16:30,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:16:30,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:16:30,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:16:30,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:16:29" (1/3) ... [2020-10-15 02:16:30,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1284566e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:16:30, skipping insertion in model container [2020-10-15 02:16:30,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:16:29" (2/3) ... [2020-10-15 02:16:30,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1284566e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:16:30, skipping insertion in model container [2020-10-15 02:16:30,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:16:30" (3/3) ... [2020-10-15 02:16:30,028 INFO L109 eAbstractionObserver]: Analyzing ICFG sep40-1.i [2020-10-15 02:16:30,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:16:30,048 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:16:30,063 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:16:30,090 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:16:30,090 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:16:30,090 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:16:30,090 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:16:30,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:16:30,091 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:16:30,091 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:16:30,091 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:16:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-15 02:16:30,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 02:16:30,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:30,118 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:30,119 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:30,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:30,127 INFO L82 PathProgramCache]: Analyzing trace with hash 794343521, now seen corresponding path program 1 times [2020-10-15 02:16:30,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:30,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713073775] [2020-10-15 02:16:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:30,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:31,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:31,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:16:31,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:16:31,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-10-15 02:16:31,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:31,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:16:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:16:31,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:16:31,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:31,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:31,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:31,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:16:31,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:31,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:31,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:31,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:31,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:31,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:31,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:31,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 02:16:31,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:31,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:31,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:16:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:31,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:16:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:31,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:31,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:31,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:31,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 02:16:31,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:31,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:31,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:16:31,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:31,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:31,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:31,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:31,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:31,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:31,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-15 02:16:31,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:31,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:16:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:16:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:16:31,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713073775] [2020-10-15 02:16:31,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:16:31,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:16:31,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112916511] [2020-10-15 02:16:31,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:16:31,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:31,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:16:31,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:16:31,872 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 11 states. [2020-10-15 02:16:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:32,284 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-10-15 02:16:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:16:32,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-15 02:16:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:32,301 INFO L225 Difference]: With dead ends: 86 [2020-10-15 02:16:32,302 INFO L226 Difference]: Without dead ends: 52 [2020-10-15 02:16:32,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:16:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-15 02:16:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-10-15 02:16:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-15 02:16:32,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2020-10-15 02:16:32,408 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 32 [2020-10-15 02:16:32,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:32,415 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2020-10-15 02:16:32,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:16:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2020-10-15 02:16:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-15 02:16:32,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:32,423 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:32,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:16:32,424 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:32,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1764294835, now seen corresponding path program 1 times [2020-10-15 02:16:32,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:32,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331360937] [2020-10-15 02:16:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:33,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-15 02:16:33,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:33,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-10-15 02:16:33,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:33,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:33,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:16:33,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 02:16:33,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:16:33,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:33,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:33,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:33,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:33,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:33,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:33,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:33,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:33,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:33,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:33,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:33,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:33,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:33,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:33,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:16:33,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:33,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:16:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:33,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:16:33,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:16:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:33,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:16:33,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:33,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:16:33,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:33,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:33,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:16:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:33,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:16:33,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:33,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:33,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:33,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 02:16:33,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:33,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 02:16:33,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:33,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:16:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:16:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:16:33,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331360937] [2020-10-15 02:16:33,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:33,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:16:33,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872788529] [2020-10-15 02:16:33,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:16:33,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:33,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:16:33,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:16:33,714 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand 5 states. [2020-10-15 02:16:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:33,810 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2020-10-15 02:16:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:16:33,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-15 02:16:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:33,812 INFO L225 Difference]: With dead ends: 62 [2020-10-15 02:16:33,812 INFO L226 Difference]: Without dead ends: 33 [2020-10-15 02:16:33,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:16:33,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-15 02:16:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-15 02:16:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 02:16:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-15 02:16:33,821 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 35 [2020-10-15 02:16:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:33,821 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-15 02:16:33,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:16:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-15 02:16:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 02:16:33,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:33,823 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:33,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:16:33,823 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:33,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:33,824 INFO L82 PathProgramCache]: Analyzing trace with hash -738945770, now seen corresponding path program 2 times [2020-10-15 02:16:33,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:33,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118493095] [2020-10-15 02:16:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:33,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:38,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:38,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:16:38,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:38,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 02:16:38,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:38,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:38,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:38,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:38,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:38,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:38,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:38,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:38,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:38,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:38,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:38,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:38,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:38,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:38,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:38,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:38,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:38,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:38,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:16:38,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:38,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 02:16:38,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:38,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:38,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:38,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:38,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 02:16:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:38,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:39,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:16:39,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:39,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-15 02:16:39,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:39,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:39,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:39,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 02:16:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:39,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:16:39,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:39,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-15 02:16:39,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:39,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:16:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:16:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-15 02:16:39,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118493095] [2020-10-15 02:16:39,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:39,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 02:16:39,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797175397] [2020-10-15 02:16:39,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:16:39,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:39,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:16:39,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:16:39,109 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-10-15 02:16:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:39,254 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2020-10-15 02:16:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:16:39,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-15 02:16:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:39,256 INFO L225 Difference]: With dead ends: 58 [2020-10-15 02:16:39,256 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 02:16:39,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:16:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 02:16:39,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-15 02:16:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-15 02:16:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-15 02:16:39,264 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 50 [2020-10-15 02:16:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:39,264 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-15 02:16:39,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:16:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-15 02:16:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 02:16:39,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:39,266 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:39,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:16:39,267 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:39,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1066977793, now seen corresponding path program 3 times [2020-10-15 02:16:39,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:39,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206359382] [2020-10-15 02:16:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:43,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:44,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:44,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 02:16:44,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:16:44,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:44,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 02:16:44,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:44,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:44,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:44,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:44,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:44,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:44,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:44,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:44,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:44,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 02:16:44,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:44,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-15 02:16:44,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:44,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:44,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:44,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:44,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:44,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:16:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:44,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:44,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:44,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 02:16:44,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-15 02:16:44,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:44,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:44,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:44,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 02:16:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:44,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:44,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 02:16:44,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:44,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 02:16:44,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:44,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:16:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:16:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-15 02:16:44,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206359382] [2020-10-15 02:16:44,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:44,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 02:16:44,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703538475] [2020-10-15 02:16:44,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:16:44,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:44,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:16:44,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:16:44,588 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 7 states. [2020-10-15 02:16:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:44,765 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2020-10-15 02:16:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:16:44,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-10-15 02:16:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:44,766 INFO L225 Difference]: With dead ends: 64 [2020-10-15 02:16:44,767 INFO L226 Difference]: Without dead ends: 39 [2020-10-15 02:16:44,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:16:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-15 02:16:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-15 02:16:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 02:16:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-15 02:16:44,779 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 59 [2020-10-15 02:16:44,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:44,780 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-15 02:16:44,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:16:44,780 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-15 02:16:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 02:16:44,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:44,783 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:44,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:16:44,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:44,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:44,784 INFO L82 PathProgramCache]: Analyzing trace with hash -65292490, now seen corresponding path program 4 times [2020-10-15 02:16:44,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:44,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000811785] [2020-10-15 02:16:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:44,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:44,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:49,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:49,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:16:49,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:49,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 02:16:49,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:49,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:49,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:16:49,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:49,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:49,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:49,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:16:49,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:49,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:49,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:49,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:16:49,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:49,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 02:16:49,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:49,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:49,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:49,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 02:16:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:49,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:50,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:50,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:16:50,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:50,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-15 02:16:50,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:50,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:16:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:50,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:50,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:16:50,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:50,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-15 02:16:50,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:50,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:16:50,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:50,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:16:50,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-15 02:16:50,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000811785] [2020-10-15 02:16:50,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:50,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 02:16:50,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123638689] [2020-10-15 02:16:50,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:16:50,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:50,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:16:50,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:16:50,207 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 8 states. [2020-10-15 02:16:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:50,398 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2020-10-15 02:16:50,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:16:50,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-15 02:16:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:50,400 INFO L225 Difference]: With dead ends: 70 [2020-10-15 02:16:50,400 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 02:16:50,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:16:50,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 02:16:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-15 02:16:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 02:16:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-15 02:16:50,411 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 68 [2020-10-15 02:16:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:50,412 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-15 02:16:50,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:16:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-10-15 02:16:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 02:16:50,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:50,415 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:50,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:16:50,416 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:50,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1783214881, now seen corresponding path program 5 times [2020-10-15 02:16:50,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:50,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074334166] [2020-10-15 02:16:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:50,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:50,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:55,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:55,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 02:16:55,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:55,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 02:16:55,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:55,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 02:16:55,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:55,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:55,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:55,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:55,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:55,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:55,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:55,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:55,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:55,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:55,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:55,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:16:55,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:55,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-15 02:16:55,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:55,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:55,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:55,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:55,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:55,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 02:16:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:55,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:55,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:16:55,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:55,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 02:16:55,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:55,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:55,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:55,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-15 02:16:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:55,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:55,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:16:55,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:55,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-15 02:16:55,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:55,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:55,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:16:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:55,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 02:16:55,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:16:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 105 proven. 210 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-15 02:16:55,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074334166] [2020-10-15 02:16:55,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:55,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 02:16:55,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661509129] [2020-10-15 02:16:55,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 02:16:55,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:55,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 02:16:55,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:16:55,863 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 9 states. [2020-10-15 02:16:56,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:56,040 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-10-15 02:16:56,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:16:56,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-15 02:16:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:56,042 INFO L225 Difference]: With dead ends: 76 [2020-10-15 02:16:56,042 INFO L226 Difference]: Without dead ends: 45 [2020-10-15 02:16:56,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:16:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-15 02:16:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-15 02:16:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-15 02:16:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-15 02:16:56,048 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 77 [2020-10-15 02:16:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:56,049 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-15 02:16:56,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 02:16:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-15 02:16:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 02:16:56,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:56,051 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:56,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:16:56,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:56,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:56,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1461104298, now seen corresponding path program 6 times [2020-10-15 02:16:56,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:56,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765050989] [2020-10-15 02:16:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:56,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:56,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:01,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:01,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 02:17:01,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:01,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-15 02:17:01,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:01,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:17:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-15 02:17:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:17:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:01,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:01,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:01,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:01,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:01,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:01,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:17:01,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:01,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:01,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:01,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:01,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:17:01,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:01,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-15 02:17:01,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:01,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:01,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:17:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:17:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:01,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 02:17:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:01,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:01,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:17:01,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:01,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-15 02:17:01,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:01,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:17:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:17:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 02:17:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:01,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:01,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:01,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:17:01,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 02:17:01,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:01,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:17:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:17:01,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 306 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-15 02:17:01,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765050989] [2020-10-15 02:17:01,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:01,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 02:17:01,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138865445] [2020-10-15 02:17:01,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 02:17:01,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:01,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 02:17:01,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:17:01,462 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 10 states. [2020-10-15 02:17:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:01,687 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2020-10-15 02:17:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:17:01,688 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-15 02:17:01,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:01,689 INFO L225 Difference]: With dead ends: 82 [2020-10-15 02:17:01,689 INFO L226 Difference]: Without dead ends: 48 [2020-10-15 02:17:01,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:17:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-15 02:17:01,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-15 02:17:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-15 02:17:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-15 02:17:01,697 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 86 [2020-10-15 02:17:01,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:01,697 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-15 02:17:01,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 02:17:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-15 02:17:01,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 02:17:01,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:01,699 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:01,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:17:01,700 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:01,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:01,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1543869505, now seen corresponding path program 7 times [2020-10-15 02:17:01,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:01,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070889060] [2020-10-15 02:17:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:01,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:06,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:06,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 02:17:06,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 02:17:06,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:06,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:06,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:17:06,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 02:17:06,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:17:06,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:06,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:06,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:06,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:06,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 02:17:06,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:06,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:06,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:06,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 02:17:06,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:06,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-15 02:17:06,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:06,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:06,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:17:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:06,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:17:06,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:06,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 02:17:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:07,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:07,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 02:17:07,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:07,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-15 02:17:07,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:07,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:07,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:17:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:07,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:17:07,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:07,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-15 02:17:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:07,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:07,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-15 02:17:07,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-15 02:17:07,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:07,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:17:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:17:07,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 210 proven. 420 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-15 02:17:07,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070889060] [2020-10-15 02:17:07,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:07,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:17:07,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297661215] [2020-10-15 02:17:07,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:17:07,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:07,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:17:07,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:17:07,187 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 11 states. [2020-10-15 02:17:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:07,490 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2020-10-15 02:17:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 02:17:07,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-10-15 02:17:07,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:07,492 INFO L225 Difference]: With dead ends: 88 [2020-10-15 02:17:07,493 INFO L226 Difference]: Without dead ends: 51 [2020-10-15 02:17:07,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:17:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-15 02:17:07,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-15 02:17:07,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-15 02:17:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2020-10-15 02:17:07,500 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 95 [2020-10-15 02:17:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:07,500 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-15 02:17:07,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:17:07,500 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2020-10-15 02:17:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 02:17:07,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:07,502 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:07,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:17:07,502 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:07,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:07,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1095277706, now seen corresponding path program 8 times [2020-10-15 02:17:07,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:07,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005811039] [2020-10-15 02:17:07,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:07,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:07,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:07,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:07,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:12,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 02:17:12,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:17:12,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:12,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:17:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:17:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:17:12,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:12,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:12,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:12,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:12,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:12,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:12,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:12,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:12,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:12,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:17:12,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:12,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-15 02:17:12,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:12,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:12,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:17:12,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:12,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:17:12,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:12,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 02:17:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:12,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:17:12,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:12,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-15 02:17:12,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:12,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:17:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:12,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:17:12,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:12,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-15 02:17:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:12,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:12,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:13,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:13,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:17:13,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-15 02:17:13,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:13,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:17:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:17:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 276 proven. 552 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-15 02:17:13,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005811039] [2020-10-15 02:17:13,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:13,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:17:13,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647244422] [2020-10-15 02:17:13,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:17:13,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:13,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:17:13,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:17:13,090 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand 12 states. [2020-10-15 02:17:13,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:13,420 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2020-10-15 02:17:13,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:17:13,421 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-10-15 02:17:13,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:13,422 INFO L225 Difference]: With dead ends: 94 [2020-10-15 02:17:13,423 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 02:17:13,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:17:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 02:17:13,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-15 02:17:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 02:17:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-10-15 02:17:13,430 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 104 [2020-10-15 02:17:13,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:13,430 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-10-15 02:17:13,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:17:13,430 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-10-15 02:17:13,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 02:17:13,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:13,432 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:13,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:17:13,432 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:13,432 INFO L82 PathProgramCache]: Analyzing trace with hash -799436129, now seen corresponding path program 9 times [2020-10-15 02:17:13,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:13,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4250416] [2020-10-15 02:17:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:13,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:18,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:18,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 02:17:18,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:18,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:17:18,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:18,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:17:18,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 02:17:18,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:17:18,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:18,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:18,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:18,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:18,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:18,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:18,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:18,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:18,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:18,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:18,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:18,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:18,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:18,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 02:17:18,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:18,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-15 02:17:18,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:18,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:18,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:17:18,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:17:18,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:18,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 02:17:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:18,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:18,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 02:17:18,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:18,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-15 02:17:18,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:18,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:17:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:17:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:18,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-15 02:17:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:18,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:18,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:19,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:19,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 02:17:19,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:19,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-15 02:17:19,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:19,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:17:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:19,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:17:19,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-15 02:17:19,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4250416] [2020-10-15 02:17:19,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:19,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 02:17:19,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167779453] [2020-10-15 02:17:19,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:17:19,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:19,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:17:19,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:17:19,080 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 13 states. [2020-10-15 02:17:19,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:19,429 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2020-10-15 02:17:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 02:17:19,429 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2020-10-15 02:17:19,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:19,431 INFO L225 Difference]: With dead ends: 100 [2020-10-15 02:17:19,431 INFO L226 Difference]: Without dead ends: 57 [2020-10-15 02:17:19,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:17:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-15 02:17:19,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-15 02:17:19,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 02:17:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2020-10-15 02:17:19,441 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 113 [2020-10-15 02:17:19,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:19,441 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2020-10-15 02:17:19,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:17:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2020-10-15 02:17:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 02:17:19,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:19,442 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:19,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:17:19,443 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:19,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:19,443 INFO L82 PathProgramCache]: Analyzing trace with hash -178262634, now seen corresponding path program 10 times [2020-10-15 02:17:19,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:19,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101563363] [2020-10-15 02:17:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:19,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:19,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:24,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:24,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 02:17:24,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:24,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:17:24,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:24,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:24,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:24,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-15 02:17:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:24,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:24,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:24,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:24,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:24,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:24,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 02:17:24,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:24,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:24,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:24,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:24,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:24,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:24,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:17:24,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-15 02:17:24,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:24,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 02:17:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:25,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:25,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:17:25,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:25,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-15 02:17:25,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:25,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:25,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:25,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:25,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-15 02:17:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:25,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:25,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:25,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:17:25,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-15 02:17:25,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:25,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:17:25,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:25,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:17:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 435 proven. 870 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-15 02:17:25,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101563363] [2020-10-15 02:17:25,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:25,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 02:17:25,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311038947] [2020-10-15 02:17:25,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:17:25,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:25,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:17:25,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:17:25,772 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand 14 states. [2020-10-15 02:17:26,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:26,114 INFO L93 Difference]: Finished difference Result 106 states and 138 transitions. [2020-10-15 02:17:26,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 02:17:26,115 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-15 02:17:26,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:26,116 INFO L225 Difference]: With dead ends: 106 [2020-10-15 02:17:26,117 INFO L226 Difference]: Without dead ends: 60 [2020-10-15 02:17:26,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:17:26,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-15 02:17:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-15 02:17:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-15 02:17:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2020-10-15 02:17:26,124 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 122 [2020-10-15 02:17:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:26,125 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2020-10-15 02:17:26,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:17:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2020-10-15 02:17:26,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 02:17:26,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:26,126 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:26,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:17:26,127 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:26,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:26,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2088354175, now seen corresponding path program 11 times [2020-10-15 02:17:26,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:26,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759457874] [2020-10-15 02:17:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:31,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:31,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-15 02:17:31,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:31,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:17:31,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:31,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:31,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:31,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-15 02:17:31,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:31,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:31,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:31,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:31,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:31,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:31,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:31,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:31,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:31,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:31,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:31,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:31,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:31,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:31,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 02:17:31,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-15 02:17:31,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:31,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:31,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:31,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:17:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:31,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:31,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 02:17:31,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:31,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-15 02:17:31,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:31,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:31,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:31,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-15 02:17:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:31,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:32,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:32,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-15 02:17:32,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:32,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-15 02:17:32,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:32,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:17:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 02:17:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 528 proven. 1056 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-15 02:17:32,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759457874] [2020-10-15 02:17:32,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:32,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 02:17:32,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831378137] [2020-10-15 02:17:32,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 02:17:32,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:32,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 02:17:32,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:17:32,490 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand 15 states. [2020-10-15 02:17:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:33,013 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2020-10-15 02:17:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 02:17:33,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 131 [2020-10-15 02:17:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:33,015 INFO L225 Difference]: With dead ends: 112 [2020-10-15 02:17:33,015 INFO L226 Difference]: Without dead ends: 63 [2020-10-15 02:17:33,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-15 02:17:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-15 02:17:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-15 02:17:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 02:17:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-10-15 02:17:33,039 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 131 [2020-10-15 02:17:33,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:33,039 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-10-15 02:17:33,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 02:17:33,039 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-10-15 02:17:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 02:17:33,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:33,044 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:33,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:17:33,044 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:33,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:33,045 INFO L82 PathProgramCache]: Analyzing trace with hash 2017259446, now seen corresponding path program 12 times [2020-10-15 02:17:33,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:33,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084367066] [2020-10-15 02:17:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:33,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:33,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:38,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:38,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-15 02:17:38,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-15 02:17:38,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:38,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-15 02:17:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:38,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:38,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:38,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:38,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:38,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:38,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:38,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:38,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:38,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:38,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:38,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:38,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:17:38,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:38,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-15 02:17:38,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:38,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:39,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 02:17:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:39,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:39,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:39,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:17:39,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:39,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-15 02:17:39,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:39,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:39,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:39,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:39,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-15 02:17:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:39,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:40,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:17:40,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:40,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-15 02:17:40,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:40,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:17:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:17:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2013 backedges. 630 proven. 1260 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-15 02:17:40,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084367066] [2020-10-15 02:17:40,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:40,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 02:17:40,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489557782] [2020-10-15 02:17:40,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 02:17:40,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:40,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 02:17:40,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:17:40,134 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand 16 states. [2020-10-15 02:17:40,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:40,505 INFO L93 Difference]: Finished difference Result 118 states and 154 transitions. [2020-10-15 02:17:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 02:17:40,506 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 140 [2020-10-15 02:17:40,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:40,507 INFO L225 Difference]: With dead ends: 118 [2020-10-15 02:17:40,508 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 02:17:40,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-15 02:17:40,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 02:17:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-15 02:17:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-15 02:17:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2020-10-15 02:17:40,515 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 140 [2020-10-15 02:17:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:40,516 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2020-10-15 02:17:40,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 02:17:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2020-10-15 02:17:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-15 02:17:40,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:40,518 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:40,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:17:40,518 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:40,518 INFO L82 PathProgramCache]: Analyzing trace with hash -427755425, now seen corresponding path program 13 times [2020-10-15 02:17:40,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:40,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091465844] [2020-10-15 02:17:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:45,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:45,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-15 02:17:45,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-15 02:17:45,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:45,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:17:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:45,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:45,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:45,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:45,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:45,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:45,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:45,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:45,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:45,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:45,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:17:45,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:45,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-15 02:17:45,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:45,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:45,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:45,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:46,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-15 02:17:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:46,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:46,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:17:46,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:46,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-15 02:17:46,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:46,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:46,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:46,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-15 02:17:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:46,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:46,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:46,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:17:46,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-15 02:17:46,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:46,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:17:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:46,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:17:46,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 741 proven. 1482 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-15 02:17:46,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091465844] [2020-10-15 02:17:46,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:46,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 02:17:46,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267174086] [2020-10-15 02:17:46,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 02:17:46,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:46,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 02:17:46,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:17:46,852 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand 17 states. [2020-10-15 02:17:47,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:47,317 INFO L93 Difference]: Finished difference Result 124 states and 162 transitions. [2020-10-15 02:17:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 02:17:47,317 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 149 [2020-10-15 02:17:47,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:47,319 INFO L225 Difference]: With dead ends: 124 [2020-10-15 02:17:47,319 INFO L226 Difference]: Without dead ends: 69 [2020-10-15 02:17:47,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:17:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-15 02:17:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-15 02:17:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-15 02:17:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-10-15 02:17:47,327 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 149 [2020-10-15 02:17:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:47,328 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-10-15 02:17:47,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 02:17:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-10-15 02:17:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-15 02:17:47,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:47,330 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:47,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:17:47,330 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:47,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:47,331 INFO L82 PathProgramCache]: Analyzing trace with hash -2044171818, now seen corresponding path program 14 times [2020-10-15 02:17:47,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:47,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385613715] [2020-10-15 02:17:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:47,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:52,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:52,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 02:17:52,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 02:17:52,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:52,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-15 02:17:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:52,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:52,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:52,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:52,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:52,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:52,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:52,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:52,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:52,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:52,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:52,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:52,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:52,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:52,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:52,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:17:52,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-15 02:17:52,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:52,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:53,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 02:17:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:53,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:53,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:17:53,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:53,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-15 02:17:53,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:53,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:53,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-15 02:17:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:53,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:53,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:53,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:17:53,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-15 02:17:53,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:53,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:17:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:17:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 861 proven. 1722 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-15 02:17:53,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385613715] [2020-10-15 02:17:53,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:53,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 02:17:53,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272564959] [2020-10-15 02:17:53,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 02:17:53,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:53,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 02:17:53,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-15 02:17:53,853 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 18 states. [2020-10-15 02:17:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:54,379 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2020-10-15 02:17:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 02:17:54,380 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 158 [2020-10-15 02:17:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:54,381 INFO L225 Difference]: With dead ends: 130 [2020-10-15 02:17:54,381 INFO L226 Difference]: Without dead ends: 72 [2020-10-15 02:17:54,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 02:17:54,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-15 02:17:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-15 02:17:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-15 02:17:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2020-10-15 02:17:54,388 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 158 [2020-10-15 02:17:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:54,388 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2020-10-15 02:17:54,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 02:17:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2020-10-15 02:17:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 02:17:54,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:54,391 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:54,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:17:54,391 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:54,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:54,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1995098305, now seen corresponding path program 15 times [2020-10-15 02:17:54,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:54,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412490666] [2020-10-15 02:17:54,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:54,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:54,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:59,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:59,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-15 02:17:59,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:17:59,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-15 02:17:59,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:59,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:17:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:17:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:17:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:59,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:59,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:59,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:59,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:59,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:59,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:59,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:59,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:59,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:59,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:59,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:59,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:59,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:59,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 02:17:59,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:59,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-15 02:17:59,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:59,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:17:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:17:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:00,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 02:18:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:00,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:00,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:00,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 02:18:00,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-15 02:18:00,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:00,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:18:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:18:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:00,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-15 02:18:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:00,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:01,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:01,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-15 02:18:01,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:01,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-15 02:18:01,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:01,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:18:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:18:01,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 990 proven. 1980 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-15 02:18:01,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412490666] [2020-10-15 02:18:01,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:01,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 02:18:01,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261893227] [2020-10-15 02:18:01,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 02:18:01,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:01,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 02:18:01,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:18:01,168 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand 19 states. [2020-10-15 02:18:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:01,705 INFO L93 Difference]: Finished difference Result 136 states and 178 transitions. [2020-10-15 02:18:01,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:18:01,706 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 167 [2020-10-15 02:18:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:01,706 INFO L225 Difference]: With dead ends: 136 [2020-10-15 02:18:01,707 INFO L226 Difference]: Without dead ends: 75 [2020-10-15 02:18:01,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:18:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-15 02:18:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-15 02:18:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-15 02:18:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2020-10-15 02:18:01,714 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 167 [2020-10-15 02:18:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:01,714 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2020-10-15 02:18:01,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 02:18:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2020-10-15 02:18:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 02:18:01,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:01,717 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:01,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:18:01,717 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash 293362678, now seen corresponding path program 16 times [2020-10-15 02:18:01,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:01,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351318811] [2020-10-15 02:18:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:06,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:06,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-15 02:18:06,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:06,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-15 02:18:06,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:06,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:18:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 02:18:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:18:06,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:06,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:06,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:06,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:06,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:06,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:06,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:06,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:06,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:06,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:06,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:07,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:07,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:18:07,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:07,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-15 02:18:07,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:07,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:18:07,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:18:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:07,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 02:18:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:07,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:08,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:08,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:18:08,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-15 02:18:08,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:08,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:18:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:08,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:18:08,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:08,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-15 02:18:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:08,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:08,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:18:08,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:08,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-15 02:18:08,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:08,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:18:08,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:08,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:18:08,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3543 backedges. 1128 proven. 2256 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-15 02:18:08,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351318811] [2020-10-15 02:18:08,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:08,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 02:18:08,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094688837] [2020-10-15 02:18:08,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 02:18:08,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:08,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 02:18:08,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-15 02:18:08,865 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand 20 states. [2020-10-15 02:18:09,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:09,476 INFO L93 Difference]: Finished difference Result 142 states and 186 transitions. [2020-10-15 02:18:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:18:09,477 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-10-15 02:18:09,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:09,478 INFO L225 Difference]: With dead ends: 142 [2020-10-15 02:18:09,478 INFO L226 Difference]: Without dead ends: 78 [2020-10-15 02:18:09,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 02:18:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-15 02:18:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-15 02:18:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-15 02:18:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-10-15 02:18:09,485 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 176 [2020-10-15 02:18:09,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:09,486 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-10-15 02:18:09,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 02:18:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-10-15 02:18:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-15 02:18:09,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:09,488 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:09,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:18:09,489 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:09,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:09,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2069659167, now seen corresponding path program 17 times [2020-10-15 02:18:09,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:09,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851501089] [2020-10-15 02:18:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:09,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:09,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:09,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:14,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:14,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-15 02:18:14,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:14,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 02:18:14,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:14,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:18:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:18:14,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:14,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:14,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:14,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:14,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:14,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:14,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:14,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:14,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:14,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:14,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:14,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:15,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:15,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 02:18:15,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-15 02:18:15,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:15,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:18:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:18:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:15,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-15 02:18:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:15,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:15,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:15,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:15,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 02:18:15,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:15,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-15 02:18:15,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:15,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:18:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:15,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:18:15,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:15,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-15 02:18:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:16,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:16,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 02:18:16,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:16,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-15 02:18:16,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:16,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:18:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:18:16,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:18:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3993 backedges. 1275 proven. 2550 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-15 02:18:16,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851501089] [2020-10-15 02:18:16,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:16,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 02:18:16,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846509668] [2020-10-15 02:18:16,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 02:18:16,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:16,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 02:18:16,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:18:16,400 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 21 states. [2020-10-15 02:18:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:16,994 INFO L93 Difference]: Finished difference Result 148 states and 194 transitions. [2020-10-15 02:18:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 02:18:16,994 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 185 [2020-10-15 02:18:16,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:16,996 INFO L225 Difference]: With dead ends: 148 [2020-10-15 02:18:16,996 INFO L226 Difference]: Without dead ends: 81 [2020-10-15 02:18:16,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 02:18:16,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-15 02:18:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-10-15 02:18:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 02:18:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2020-10-15 02:18:17,004 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 185 [2020-10-15 02:18:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:17,004 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2020-10-15 02:18:17,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 02:18:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2020-10-15 02:18:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-15 02:18:17,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:17,006 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:17,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 02:18:17,006 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:17,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1611843094, now seen corresponding path program 18 times [2020-10-15 02:18:17,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:17,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898585778] [2020-10-15 02:18:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:17,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:17,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:17,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:22,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:22,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-15 02:18:22,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:22,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:18:22,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:22,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:22,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:22,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:22,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:18:22,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:22,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:22,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:22,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:22,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:22,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:22,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:22,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:22,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:18:22,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:22,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-15 02:18:22,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:22,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-15 02:18:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:23,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:23,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:18:23,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:23,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-15 02:18:23,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:23,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:23,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-15 02:18:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:23,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:23,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:23,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:23,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:18:23,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:23,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-15 02:18:23,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:23,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:18:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:23,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:18:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 1431 proven. 2862 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-15 02:18:24,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898585778] [2020-10-15 02:18:24,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:24,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 02:18:24,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340092254] [2020-10-15 02:18:24,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 02:18:24,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:24,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 02:18:24,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-15 02:18:24,060 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 22 states. [2020-10-15 02:18:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:24,753 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2020-10-15 02:18:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 02:18:24,754 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 194 [2020-10-15 02:18:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:24,755 INFO L225 Difference]: With dead ends: 154 [2020-10-15 02:18:24,755 INFO L226 Difference]: Without dead ends: 84 [2020-10-15 02:18:24,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 02:18:24,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-15 02:18:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-15 02:18:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-15 02:18:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2020-10-15 02:18:24,768 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 194 [2020-10-15 02:18:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:24,768 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2020-10-15 02:18:24,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 02:18:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2020-10-15 02:18:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-15 02:18:24,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:24,773 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:24,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 02:18:24,774 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:24,775 INFO L82 PathProgramCache]: Analyzing trace with hash -788738817, now seen corresponding path program 19 times [2020-10-15 02:18:24,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:24,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72167447] [2020-10-15 02:18:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:24,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:24,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:29,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:29,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-15 02:18:29,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:29,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 02:18:29,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:29,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:29,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:29,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-15 02:18:29,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:29,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:29,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:29,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:29,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:29,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:29,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:29,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:29,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:29,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:30,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:30,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:18:30,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:30,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-10-15 02:18:30,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:30,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:30,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-15 02:18:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:31,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:31,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:31,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:18:31,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-15 02:18:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:31,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:31,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:31,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-15 02:18:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:32,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:32,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 02:18:32,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-15 02:18:32,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:32,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:18:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:32,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:18:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4974 backedges. 1596 proven. 3192 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-15 02:18:32,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72167447] [2020-10-15 02:18:32,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:32,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 02:18:32,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465037210] [2020-10-15 02:18:32,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 02:18:32,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:32,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 02:18:32,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:18:32,282 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand 23 states. [2020-10-15 02:18:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:33,012 INFO L93 Difference]: Finished difference Result 160 states and 210 transitions. [2020-10-15 02:18:33,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 02:18:33,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 203 [2020-10-15 02:18:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:33,013 INFO L225 Difference]: With dead ends: 160 [2020-10-15 02:18:33,013 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 02:18:33,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 02:18:33,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 02:18:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-15 02:18:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 02:18:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2020-10-15 02:18:33,021 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 203 [2020-10-15 02:18:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:33,021 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2020-10-15 02:18:33,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 02:18:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2020-10-15 02:18:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 02:18:33,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:33,023 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:33,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 02:18:33,023 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:33,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1421498314, now seen corresponding path program 20 times [2020-10-15 02:18:33,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:33,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741582828] [2020-10-15 02:18:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:33,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:33,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:38,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-15 02:18:38,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-15 02:18:38,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:38,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:18:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:18:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:38,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:38,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:38,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:38,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:38,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:38,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:38,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:39,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:39,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:39,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-15 02:18:39,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:39,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:18:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:18:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 02:18:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:39,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:40,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:40,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:40,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:40,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 911 [2020-10-15 02:18:40,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:40,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:18:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:18:40,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:40,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-15 02:18:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:41,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:41,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:18:41,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:41,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-15 02:18:41,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:41,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:41,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:18:41,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:41,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:18:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 1770 proven. 3540 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-15 02:18:41,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741582828] [2020-10-15 02:18:41,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:41,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 02:18:41,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102632490] [2020-10-15 02:18:41,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 02:18:41,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:41,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 02:18:41,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-15 02:18:41,150 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand 24 states. [2020-10-15 02:18:41,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:41,933 INFO L93 Difference]: Finished difference Result 166 states and 218 transitions. [2020-10-15 02:18:41,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 02:18:41,934 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 212 [2020-10-15 02:18:41,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:41,935 INFO L225 Difference]: With dead ends: 166 [2020-10-15 02:18:41,935 INFO L226 Difference]: Without dead ends: 90 [2020-10-15 02:18:41,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 02:18:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-15 02:18:41,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-15 02:18:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-15 02:18:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 113 transitions. [2020-10-15 02:18:41,942 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 113 transitions. Word has length 212 [2020-10-15 02:18:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:41,943 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 113 transitions. [2020-10-15 02:18:41,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 02:18:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 113 transitions. [2020-10-15 02:18:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-15 02:18:41,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:41,945 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:41,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 02:18:41,945 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:41,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:41,945 INFO L82 PathProgramCache]: Analyzing trace with hash -98819105, now seen corresponding path program 21 times [2020-10-15 02:18:41,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:41,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557711447] [2020-10-15 02:18:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:41,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:42,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:47,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:47,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-15 02:18:47,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-15 02:18:47,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:47,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:18:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 02:18:47,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:47,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:47,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:47,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:47,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:47,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:47,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:47,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:47,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:47,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:18:47,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:47,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-10-15 02:18:47,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:47,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:18:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:47,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 02:18:47,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-15 02:18:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:49,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:49,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:18:49,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:49,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-15 02:18:49,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:49,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:49,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:18:49,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:49,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 02:18:49,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:49,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-15 02:18:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:49,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:49,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 02:18:49,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-15 02:18:49,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:49,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:18:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 02:18:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6063 backedges. 1953 proven. 3906 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-10-15 02:18:49,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557711447] [2020-10-15 02:18:49,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:49,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 02:18:49,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49334928] [2020-10-15 02:18:49,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 02:18:49,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:49,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 02:18:49,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:18:49,967 INFO L87 Difference]: Start difference. First operand 88 states and 113 transitions. Second operand 25 states. [2020-10-15 02:18:50,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:18:50,783 INFO L93 Difference]: Finished difference Result 172 states and 226 transitions. [2020-10-15 02:18:50,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:18:50,784 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 221 [2020-10-15 02:18:50,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:18:50,785 INFO L225 Difference]: With dead ends: 172 [2020-10-15 02:18:50,786 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 02:18:50,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 02:18:50,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 02:18:50,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-15 02:18:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 02:18:50,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2020-10-15 02:18:50,802 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 221 [2020-10-15 02:18:50,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:18:50,803 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2020-10-15 02:18:50,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 02:18:50,803 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2020-10-15 02:18:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-15 02:18:50,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:18:50,805 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:18:50,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 02:18:50,805 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:18:50,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:18:50,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1074855338, now seen corresponding path program 22 times [2020-10-15 02:18:50,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:18:50,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504083160] [2020-10-15 02:18:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:18:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:50,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:55,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:55,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-15 02:18:55,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:18:55,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-15 02:18:55,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:55,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:55,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:18:55,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:18:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:18:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:55,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:18:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:55,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:55,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:18:55,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:55,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:18:55,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:55,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:18:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:18:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:18:55,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:55,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:18:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:57,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:57,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 02:18:57,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:18:57,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-15 02:18:57,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:57,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:18:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:57,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:18:57,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:57,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-15 02:18:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:57,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:57,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:58,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:58,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 02:18:58,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-10-15 02:18:58,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:58,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:18:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:58,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:18:58,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:58,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-15 02:18:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:18:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:58,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:18:59,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:18:59,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 02:18:59,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:18:59,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-15 02:18:59,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:18:59,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:18:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:18:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:18:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:18:59,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:18:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6648 backedges. 2145 proven. 4290 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-15 02:18:59,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504083160] [2020-10-15 02:18:59,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:18:59,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 02:18:59,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280169755] [2020-10-15 02:18:59,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 02:18:59,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:18:59,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 02:18:59,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-15 02:18:59,375 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand 26 states. [2020-10-15 02:19:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:00,217 INFO L93 Difference]: Finished difference Result 178 states and 234 transitions. [2020-10-15 02:19:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 02:19:00,217 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 230 [2020-10-15 02:19:00,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:00,218 INFO L225 Difference]: With dead ends: 178 [2020-10-15 02:19:00,219 INFO L226 Difference]: Without dead ends: 96 [2020-10-15 02:19:00,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 02:19:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-15 02:19:00,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-15 02:19:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-15 02:19:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2020-10-15 02:19:00,226 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 121 transitions. Word has length 230 [2020-10-15 02:19:00,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:00,227 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 121 transitions. [2020-10-15 02:19:00,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 02:19:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 121 transitions. [2020-10-15 02:19:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-15 02:19:00,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:00,229 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:00,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 02:19:00,229 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:00,230 INFO L82 PathProgramCache]: Analyzing trace with hash 593527487, now seen corresponding path program 23 times [2020-10-15 02:19:00,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:00,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808719379] [2020-10-15 02:19:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:00,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:00,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:05,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:05,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-15 02:19:05,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 02:19:05,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:05,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:19:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-15 02:19:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:19:05,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:05,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:05,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:05,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:05,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:05,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:05,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:05,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:05,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:05,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:05,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:05,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:05,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:19:05,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:05,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:06,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:06,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 02:19:06,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 933 [2020-10-15 02:19:06,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:06,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:19:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:19:06,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:06,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-15 02:19:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:07,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:07,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 02:19:07,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-10-15 02:19:07,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:07,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:19:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:19:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:07,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-15 02:19:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:07,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:07,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:08,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:08,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 02:19:08,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-15 02:19:08,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:08,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:08,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:19:08,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:08,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:19:08,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 2346 proven. 4692 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-15 02:19:08,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808719379] [2020-10-15 02:19:08,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:08,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 02:19:08,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905017989] [2020-10-15 02:19:08,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 02:19:08,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:08,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 02:19:08,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-15 02:19:08,729 INFO L87 Difference]: Start difference. First operand 94 states and 121 transitions. Second operand 27 states. [2020-10-15 02:19:09,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:09,615 INFO L93 Difference]: Finished difference Result 184 states and 242 transitions. [2020-10-15 02:19:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 02:19:09,615 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 239 [2020-10-15 02:19:09,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:09,617 INFO L225 Difference]: With dead ends: 184 [2020-10-15 02:19:09,617 INFO L226 Difference]: Without dead ends: 99 [2020-10-15 02:19:09,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 02:19:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-15 02:19:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-15 02:19:09,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 02:19:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2020-10-15 02:19:09,632 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 239 [2020-10-15 02:19:09,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:09,632 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2020-10-15 02:19:09,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 02:19:09,632 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2020-10-15 02:19:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-15 02:19:09,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:09,635 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:09,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 02:19:09,635 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:09,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1637297034, now seen corresponding path program 24 times [2020-10-15 02:19:09,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:09,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241533352] [2020-10-15 02:19:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:09,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:09,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:14,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:14,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-15 02:19:14,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:14,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 02:19:14,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:14,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:14,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:19:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:19:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:19:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:14,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:14,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:14,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:14,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:14,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:14,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:14,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:14,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:15,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:15,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:19:15,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-15 02:19:15,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:15,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:19:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:19:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:16,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-15 02:19:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:17,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:17,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:19:17,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-10-15 02:19:17,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:17,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:19:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:19:17,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:17,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-15 02:19:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:17,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:18,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:18,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:19:18,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:18,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1094 [2020-10-15 02:19:18,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:18,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:19:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:19:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7899 backedges. 2556 proven. 5112 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-15 02:19:18,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241533352] [2020-10-15 02:19:18,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:18,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 02:19:18,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787909521] [2020-10-15 02:19:18,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 02:19:18,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:18,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 02:19:18,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-15 02:19:18,549 INFO L87 Difference]: Start difference. First operand 97 states and 125 transitions. Second operand 28 states. [2020-10-15 02:19:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:19,544 INFO L93 Difference]: Finished difference Result 190 states and 250 transitions. [2020-10-15 02:19:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 02:19:19,546 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 248 [2020-10-15 02:19:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:19,548 INFO L225 Difference]: With dead ends: 190 [2020-10-15 02:19:19,548 INFO L226 Difference]: Without dead ends: 102 [2020-10-15 02:19:19,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 02:19:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-15 02:19:19,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-15 02:19:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-15 02:19:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 129 transitions. [2020-10-15 02:19:19,556 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 129 transitions. Word has length 248 [2020-10-15 02:19:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:19,556 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 129 transitions. [2020-10-15 02:19:19,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 02:19:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 129 transitions. [2020-10-15 02:19:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-15 02:19:19,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:19,558 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:19,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 02:19:19,558 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:19,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:19,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1779439201, now seen corresponding path program 25 times [2020-10-15 02:19:19,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:19,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17948124] [2020-10-15 02:19:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:19,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:19,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:19,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:19,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:24,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:24,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-15 02:19:24,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-15 02:19:24,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:24,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:19:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:19:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 02:19:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:24,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:24,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:24,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:24,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:24,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:24,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:24,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:24,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:25,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:25,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 02:19:25,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:25,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-10-15 02:19:25,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:25,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:19:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 02:19:25,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-15 02:19:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:26,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:27,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:27,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 02:19:27,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-15 02:19:27,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:27,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:19:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 02:19:27,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:27,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-15 02:19:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:27,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:27,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:28,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:28,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 02:19:28,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:28,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1232 [2020-10-15 02:19:28,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:28,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:19:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 02:19:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8565 backedges. 2775 proven. 5550 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-15 02:19:28,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17948124] [2020-10-15 02:19:28,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:28,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 02:19:28,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540421074] [2020-10-15 02:19:28,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 02:19:28,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:28,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 02:19:28,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-15 02:19:28,889 INFO L87 Difference]: Start difference. First operand 100 states and 129 transitions. Second operand 29 states. [2020-10-15 02:19:29,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:29,890 INFO L93 Difference]: Finished difference Result 196 states and 258 transitions. [2020-10-15 02:19:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 02:19:29,891 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 257 [2020-10-15 02:19:29,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:29,892 INFO L225 Difference]: With dead ends: 196 [2020-10-15 02:19:29,893 INFO L226 Difference]: Without dead ends: 105 [2020-10-15 02:19:29,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-15 02:19:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-15 02:19:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-15 02:19:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-15 02:19:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 133 transitions. [2020-10-15 02:19:29,900 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 133 transitions. Word has length 257 [2020-10-15 02:19:29,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:29,901 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 133 transitions. [2020-10-15 02:19:29,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 02:19:29,901 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 133 transitions. [2020-10-15 02:19:29,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-15 02:19:29,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:29,903 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:29,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 02:19:29,903 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:29,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:29,904 INFO L82 PathProgramCache]: Analyzing trace with hash 445456022, now seen corresponding path program 26 times [2020-10-15 02:19:29,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:29,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576993740] [2020-10-15 02:19:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:30,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:34,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:34,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-15 02:19:34,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:34,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-15 02:19:34,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:34,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:34,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:19:34,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:19:34,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 02:19:34,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:35,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:35,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:35,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:35,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:35,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:35,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:35,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:35,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:35,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:35,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:36,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:36,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 02:19:36,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:36,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1261 [2020-10-15 02:19:36,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:36,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:19:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 02:19:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:36,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-15 02:19:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:36,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:38,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:38,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 02:19:38,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:38,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-10-15 02:19:38,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:38,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:19:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 02:19:38,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:38,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-15 02:19:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:38,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:39,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:39,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 02:19:39,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1576 [2020-10-15 02:19:39,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:39,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:19:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 02:19:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9258 backedges. 3003 proven. 6006 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-15 02:19:39,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576993740] [2020-10-15 02:19:39,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:39,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 02:19:39,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180543832] [2020-10-15 02:19:39,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 02:19:39,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:39,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 02:19:39,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-15 02:19:39,872 INFO L87 Difference]: Start difference. First operand 103 states and 133 transitions. Second operand 30 states. [2020-10-15 02:19:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:40,986 INFO L93 Difference]: Finished difference Result 202 states and 266 transitions. [2020-10-15 02:19:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 02:19:40,987 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 266 [2020-10-15 02:19:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:40,988 INFO L225 Difference]: With dead ends: 202 [2020-10-15 02:19:40,988 INFO L226 Difference]: Without dead ends: 108 [2020-10-15 02:19:40,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 02:19:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-15 02:19:40,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-15 02:19:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-15 02:19:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2020-10-15 02:19:40,995 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 266 [2020-10-15 02:19:40,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:40,995 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2020-10-15 02:19:40,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 02:19:40,996 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2020-10-15 02:19:40,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-15 02:19:40,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:40,997 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:40,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 02:19:40,998 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:40,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:40,998 INFO L82 PathProgramCache]: Analyzing trace with hash 393238655, now seen corresponding path program 27 times [2020-10-15 02:19:40,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:40,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597378854] [2020-10-15 02:19:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:41,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:41,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:41,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:41,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:46,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:46,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-15 02:19:46,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:46,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-15 02:19:46,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:46,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:19:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:19:46,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:19:46,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:46,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:46,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:46,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:46,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:46,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:47,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:47,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 02:19:47,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-15 02:19:47,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:47,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:19:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:19:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:48,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-15 02:19:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:48,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:49,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:49,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 02:19:49,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:49,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1451 [2020-10-15 02:19:49,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:49,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:19:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:19:49,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:49,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-15 02:19:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:49,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:51,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:51,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 02:19:51,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1429 [2020-10-15 02:19:51,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:51,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:19:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 02:19:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9978 backedges. 3240 proven. 6480 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-15 02:19:51,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597378854] [2020-10-15 02:19:51,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:19:51,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 02:19:51,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545000343] [2020-10-15 02:19:51,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 02:19:51,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:19:51,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 02:19:51,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:19:51,124 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand 31 states. [2020-10-15 02:19:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:19:52,258 INFO L93 Difference]: Finished difference Result 208 states and 274 transitions. [2020-10-15 02:19:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 02:19:52,258 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 275 [2020-10-15 02:19:52,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:19:52,260 INFO L225 Difference]: With dead ends: 208 [2020-10-15 02:19:52,260 INFO L226 Difference]: Without dead ends: 111 [2020-10-15 02:19:52,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-15 02:19:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-15 02:19:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-15 02:19:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-15 02:19:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2020-10-15 02:19:52,269 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 275 [2020-10-15 02:19:52,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:19:52,269 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2020-10-15 02:19:52,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 02:19:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2020-10-15 02:19:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-15 02:19:52,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:19:52,271 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:19:52,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 02:19:52,271 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:19:52,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:19:52,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2075517110, now seen corresponding path program 28 times [2020-10-15 02:19:52,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:19:52,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049739706] [2020-10-15 02:19:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:19:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:52,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:52,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:52,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:57,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-15 02:19:57,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:19:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-15 02:19:57,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:57,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:19:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-15 02:19:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:19:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:57,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:19:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:57,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:57,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:57,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:19:57,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:19:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:19:57,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:57,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:19:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:19:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:19:57,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:57,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:19:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:19:59,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:19:59,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 02:19:59,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:19:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-10-15 02:19:59,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:19:59,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:19:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:19:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:19:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:19:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:19:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-15 02:19:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:19:59,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:01,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:01,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 02:20:01,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:20:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1564 [2020-10-15 02:20:01,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:01,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:20:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:20:01,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-15 02:20:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:01,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:02,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:02,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 02:20:02,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:20:02,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1617 [2020-10-15 02:20:02,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:02,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:20:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:20:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10725 backedges. 3486 proven. 6972 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-15 02:20:02,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049739706] [2020-10-15 02:20:02,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:20:02,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 02:20:02,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101718072] [2020-10-15 02:20:02,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 02:20:02,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:20:02,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 02:20:02,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-15 02:20:02,970 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand 32 states. [2020-10-15 02:20:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:20:04,186 INFO L93 Difference]: Finished difference Result 214 states and 282 transitions. [2020-10-15 02:20:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 02:20:04,187 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 284 [2020-10-15 02:20:04,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:20:04,188 INFO L225 Difference]: With dead ends: 214 [2020-10-15 02:20:04,188 INFO L226 Difference]: Without dead ends: 114 [2020-10-15 02:20:04,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 02:20:04,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-15 02:20:04,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-15 02:20:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-15 02:20:04,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2020-10-15 02:20:04,197 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 284 [2020-10-15 02:20:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:20:04,197 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 145 transitions. [2020-10-15 02:20:04,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 02:20:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 145 transitions. [2020-10-15 02:20:04,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-15 02:20:04,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:20:04,199 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:20:04,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 02:20:04,200 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:20:04,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:20:04,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1242025823, now seen corresponding path program 29 times [2020-10-15 02:20:04,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:20:04,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348315888] [2020-10-15 02:20:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:20:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:04,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:09,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:09,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-15 02:20:09,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:20:09,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5165 [2020-10-15 02:20:09,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:09,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:09,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:20:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-15 02:20:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:20:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:09,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:20:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:09,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:09,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:20:09,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:20:09,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:20:09,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:09,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:20:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:20:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:20:09,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:09,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:20:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:09,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:09,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:11,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:11,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 02:20:11,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:20:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1725 [2020-10-15 02:20:11,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:11,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:20:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:20:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:11,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-15 02:20:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:11,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:13,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:13,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 02:20:13,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:20:13,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-10-15 02:20:13,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:13,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:20:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:20:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:13,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-15 02:20:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:13,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:15,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:15,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 02:20:15,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:20:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1803 [2020-10-15 02:20:15,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:15,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:20:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:20:15,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11499 backedges. 3741 proven. 7482 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-15 02:20:15,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348315888] [2020-10-15 02:20:15,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:20:15,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-15 02:20:15,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273792653] [2020-10-15 02:20:15,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 02:20:15,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:20:15,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 02:20:15,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 02:20:15,399 INFO L87 Difference]: Start difference. First operand 112 states and 145 transitions. Second operand 33 states. [2020-10-15 02:20:16,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:20:16,640 INFO L93 Difference]: Finished difference Result 220 states and 290 transitions. [2020-10-15 02:20:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 02:20:16,641 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 293 [2020-10-15 02:20:16,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:20:16,642 INFO L225 Difference]: With dead ends: 220 [2020-10-15 02:20:16,642 INFO L226 Difference]: Without dead ends: 117 [2020-10-15 02:20:16,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 02:20:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-15 02:20:16,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-10-15 02:20:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-15 02:20:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 149 transitions. [2020-10-15 02:20:16,650 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 149 transitions. Word has length 293 [2020-10-15 02:20:16,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:20:16,650 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 149 transitions. [2020-10-15 02:20:16,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-15 02:20:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 149 transitions. [2020-10-15 02:20:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-15 02:20:16,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:20:16,652 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:20:16,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 02:20:16,652 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:20:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:20:16,652 INFO L82 PathProgramCache]: Analyzing trace with hash 482155222, now seen corresponding path program 30 times [2020-10-15 02:20:16,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:20:16,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122064374] [2020-10-15 02:20:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:20:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:16,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:16,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:16,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:16,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:21,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:21,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-15 02:20:21,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:20:21,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-15 02:20:21,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:21,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:21,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:20:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:20:21,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 02:20:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:21,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:20:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:21,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:21,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:21,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:20:21,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:20:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:20:21,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:21,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:20:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:20:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:20:21,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:21,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:20:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:21,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:23,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:23,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 02:20:23,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:20:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1903 [2020-10-15 02:20:23,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:23,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:20:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 02:20:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:24,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-15 02:20:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:24,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:26,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 02:20:26,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:20:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1983 [2020-10-15 02:20:26,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:26,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:20:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 02:20:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-15 02:20:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:28,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:20:28,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-15 02:20:28,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:20:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1965 [2020-10-15 02:20:28,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:20:28,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:20:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:20:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:20:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-15 02:20:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:20:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12300 backedges. 4005 proven. 8010 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2020-10-15 02:20:28,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122064374] [2020-10-15 02:20:28,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:20:28,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 02:20:28,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672665206] [2020-10-15 02:20:28,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 02:20:28,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:20:28,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 02:20:28,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 02:20:28,492 INFO L87 Difference]: Start difference. First operand 115 states and 149 transitions. Second operand 34 states. [2020-10-15 02:20:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:20:29,847 INFO L93 Difference]: Finished difference Result 226 states and 298 transitions. [2020-10-15 02:20:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 02:20:29,848 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 302 [2020-10-15 02:20:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:20:29,849 INFO L225 Difference]: With dead ends: 226 [2020-10-15 02:20:29,850 INFO L226 Difference]: Without dead ends: 120 [2020-10-15 02:20:29,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 02:20:29,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-15 02:20:29,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-15 02:20:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 02:20:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 153 transitions. [2020-10-15 02:20:29,858 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 153 transitions. Word has length 302 [2020-10-15 02:20:29,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:20:29,858 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 153 transitions. [2020-10-15 02:20:29,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 02:20:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 153 transitions. [2020-10-15 02:20:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-15 02:20:29,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:20:29,860 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:20:29,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 02:20:29,861 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:20:29,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:20:29,861 INFO L82 PathProgramCache]: Analyzing trace with hash 207375935, now seen corresponding path program 31 times [2020-10-15 02:20:29,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:20:29,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732430294] [2020-10-15 02:20:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:20:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:20:29,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:29,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:30,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:20:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking...