/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/max40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:13:21,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:13:21,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:13:22,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:13:22,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:13:22,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:13:22,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:13:22,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:13:22,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:13:22,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:13:22,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:13:22,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:13:22,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:13:22,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:13:22,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:13:22,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:13:22,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:13:22,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:13:22,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:13:22,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:13:22,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:13:22,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:13:22,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:13:22,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:13:22,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:13:22,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:13:22,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:13:22,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:13:22,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:13:22,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:13:22,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:13:22,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:13:22,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:13:22,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:13:22,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:13:22,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:13:22,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:13:22,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:13:22,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:13:22,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:13:22,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:13:22,055 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 02:13:22,076 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:13:22,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:13:22,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:13:22,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:13:22,079 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:13:22,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:13:22,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:13:22,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:13:22,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:13:22,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:13:22,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:13:22,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:13:22,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:13:22,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:13:22,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:13:22,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:13:22,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:13:22,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:13:22,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:13:22,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:13:22,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:13:22,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:13:22,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:13:22,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:13:22,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:13:22,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:13:22,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:13:22,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:13:22,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:13:22,084 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 02:13:22,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:13:22,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:13:22,405 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:13:22,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:13:22,408 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:13:22,408 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max40-1.i [2020-10-15 02:13:22,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ddcd9c73/4461c2debb0b457fbf2b1829a3718f3b/FLAG46825e9a5 [2020-10-15 02:13:22,948 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:13:22,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max40-1.i [2020-10-15 02:13:22,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ddcd9c73/4461c2debb0b457fbf2b1829a3718f3b/FLAG46825e9a5 [2020-10-15 02:13:23,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ddcd9c73/4461c2debb0b457fbf2b1829a3718f3b [2020-10-15 02:13:23,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:13:23,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:13:23,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:13:23,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:13:23,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:13:23,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:13:23" (1/1) ... [2020-10-15 02:13:23,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7184f8b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23, skipping insertion in model container [2020-10-15 02:13:23,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:13:23" (1/1) ... [2020-10-15 02:13:23,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:13:23,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:13:23,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:13:23,601 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:13:23,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:13:23,646 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:13:23,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23 WrapperNode [2020-10-15 02:13:23,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:13:23,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:13:23,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:13:23,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:13:23,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23" (1/1) ... [2020-10-15 02:13:23,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23" (1/1) ... [2020-10-15 02:13:23,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23" (1/1) ... [2020-10-15 02:13:23,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23" (1/1) ... [2020-10-15 02:13:23,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23" (1/1) ... [2020-10-15 02:13:23,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23" (1/1) ... [2020-10-15 02:13:23,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23" (1/1) ... [2020-10-15 02:13:23,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:13:23,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:13:23,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:13:23,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:13:23,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23" (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 02:13:23,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:13:23,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:13:23,885 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-15 02:13:23,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:13:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:13:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:13:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-15 02:13:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:13:23,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:13:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:13:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:13:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:13:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:13:23,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:13:24,241 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:13:24,242 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 02:13:24,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:13:24 BoogieIcfgContainer [2020-10-15 02:13:24,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:13:24,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:13:24,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:13:24,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:13:24,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:13:23" (1/3) ... [2020-10-15 02:13:24,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa78214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:13:24, skipping insertion in model container [2020-10-15 02:13:24,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:13:23" (2/3) ... [2020-10-15 02:13:24,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa78214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:13:24, skipping insertion in model container [2020-10-15 02:13:24,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:13:24" (3/3) ... [2020-10-15 02:13:24,269 INFO L109 eAbstractionObserver]: Analyzing ICFG max40-1.i [2020-10-15 02:13:24,280 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:13:24,287 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:13:24,301 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:13:24,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:13:24,331 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:13:24,331 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:13:24,331 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:13:24,331 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:13:24,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:13:24,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:13:24,332 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:13:24,353 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-15 02:13:24,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 02:13:24,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:24,363 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 02:13:24,364 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:24,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:24,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2020-10-15 02:13:24,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:24,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391765550] [2020-10-15 02:13:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:24,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:24,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:25,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:25,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:25,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:13:25,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:13:25,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-10-15 02:13:25,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:25,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:25,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:13:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:13:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:13:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 02:13:26,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:26,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:26,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:13:26,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:26,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:26,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:26,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:26,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 02:13:26,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:13:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:13:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:13:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:26,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-15 02:13:26,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:26,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:13:26,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:26,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:13:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:26,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:26,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:26,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:26,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-15 02:13:26,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:26,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:26,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:26,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:26,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:13:26,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:13:26,418 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 02:13:26,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391765550] [2020-10-15 02:13:26,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:13:26,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:13:26,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964204254] [2020-10-15 02:13:26,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:13:26,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:26,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:13:26,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:13:26,456 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 11 states. [2020-10-15 02:13:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:26,931 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2020-10-15 02:13:26,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:13:26,933 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-15 02:13:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:26,945 INFO L225 Difference]: With dead ends: 89 [2020-10-15 02:13:26,945 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 02:13:26,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:13:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 02:13:27,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-15 02:13:27,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-15 02:13:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2020-10-15 02:13:27,005 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 32 [2020-10-15 02:13:27,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:27,006 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2020-10-15 02:13:27,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:13:27,006 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-10-15 02:13:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 02:13:27,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:27,009 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, 1] [2020-10-15 02:13:27,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:13:27,010 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:27,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:27,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1328588870, now seen corresponding path program 1 times [2020-10-15 02:13:27,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:27,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102629644] [2020-10-15 02:13:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:28,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 02:13:28,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:13:28,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-10-15 02:13:28,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:28,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:13:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 02:13:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:13:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:28,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:28,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:28,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:13:28,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:28,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:28,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:28,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:13:28,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:28,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:28,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:13:28,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:28,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:13:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:28,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:13:28,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:28,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 02:13:28,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:28,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:28,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:28,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:13:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:28,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:13:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:28,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:13:28,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:28,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 02:13:28,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:28,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:28,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:13:28,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:13:28,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:28,334 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 02:13:28,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102629644] [2020-10-15 02:13:28,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:28,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:13:28,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133307589] [2020-10-15 02:13:28,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:13:28,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:28,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:13:28,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:13:28,339 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 5 states. [2020-10-15 02:13:28,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:28,454 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-10-15 02:13:28,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:13:28,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-15 02:13:28,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:28,456 INFO L225 Difference]: With dead ends: 66 [2020-10-15 02:13:28,456 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 02:13:28,458 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 02:13:28,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 02:13:28,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-15 02:13:28,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 02:13:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-15 02:13:28,466 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 36 [2020-10-15 02:13:28,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:28,466 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-15 02:13:28,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:13:28,467 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-15 02:13:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 02:13:28,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:28,469 INFO L422 BasicCegarLoop]: trace histogram [6, 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 02:13:28,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:13:28,469 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:28,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:28,470 INFO L82 PathProgramCache]: Analyzing trace with hash 981704641, now seen corresponding path program 2 times [2020-10-15 02:13:28,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:28,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130918337] [2020-10-15 02:13:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:33,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 02:13:33,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:13:33,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:13:33,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:33,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:13:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:13:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:33,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:33,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:33,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:33,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:13:33,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:33,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:33,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:33,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:33,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:13:33,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-15 02:13:33,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:33,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:33,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:33,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:13:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:13:34,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 02:13:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:34,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:34,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:34,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:13:34,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:34,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-15 02:13:34,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:34,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:34,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:13:34,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:34,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-15 02:13:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:34,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:34,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:34,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:13:34,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 02:13:34,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:34,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:13:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:13:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:13:34,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130918337] [2020-10-15 02:13:34,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:34,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 02:13:34,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703442073] [2020-10-15 02:13:34,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:13:34,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:34,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:13:34,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:13:34,377 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 14 states. [2020-10-15 02:13:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:35,581 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2020-10-15 02:13:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:13:35,582 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-15 02:13:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:35,584 INFO L225 Difference]: With dead ends: 112 [2020-10-15 02:13:35,585 INFO L226 Difference]: Without dead ends: 88 [2020-10-15 02:13:35,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2020-10-15 02:13:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-15 02:13:35,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2020-10-15 02:13:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-15 02:13:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-10-15 02:13:35,602 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 56 [2020-10-15 02:13:35,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:35,602 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-10-15 02:13:35,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:13:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-10-15 02:13:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 02:13:35,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:35,606 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:35,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:13:35,607 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:35,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:35,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1260494052, now seen corresponding path program 1 times [2020-10-15 02:13:35,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:35,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166608292] [2020-10-15 02:13:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:35,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:35,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:35,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:38,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:40,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:40,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:13:40,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:13:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:13:40,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:40,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:13:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 02:13:40,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:40,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:40,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:40,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:40,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:40,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:40,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:40,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:40,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:40,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:40,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:40,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:40,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:40,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:13:40,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:40,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 02:13:40,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:40,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:13:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:40,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 02:13:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:40,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:40,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:40,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:40,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:13:40,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:40,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 02:13:40,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:40,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:13:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:13:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:40,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:13:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:40,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:40,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:40,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:13:40,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:40,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-15 02:13:40,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:40,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 02:13:40,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 29 proven. 138 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-15 02:13:41,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166608292] [2020-10-15 02:13:41,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:41,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 02:13:41,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021284862] [2020-10-15 02:13:41,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 02:13:41,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:41,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 02:13:41,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-15 02:13:41,214 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 18 states. [2020-10-15 02:13:42,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:42,378 INFO L93 Difference]: Finished difference Result 201 states and 288 transitions. [2020-10-15 02:13:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 02:13:42,379 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2020-10-15 02:13:42,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:42,383 INFO L225 Difference]: With dead ends: 201 [2020-10-15 02:13:42,385 INFO L226 Difference]: Without dead ends: 138 [2020-10-15 02:13:42,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=387, Invalid=1253, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 02:13:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-15 02:13:42,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 124. [2020-10-15 02:13:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-15 02:13:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2020-10-15 02:13:42,437 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 68 [2020-10-15 02:13:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:42,438 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2020-10-15 02:13:42,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 02:13:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2020-10-15 02:13:42,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 02:13:42,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:42,446 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 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 02:13:42,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:13:42,446 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:42,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:42,447 INFO L82 PathProgramCache]: Analyzing trace with hash 587346034, now seen corresponding path program 1 times [2020-10-15 02:13:42,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:42,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381215323] [2020-10-15 02:13:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:43,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:45,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:46,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:47,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:47,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 02:13:47,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 02:13:47,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:13:47,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:47,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:13:47,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:13:47,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 02:13:47,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:47,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:47,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:47,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:47,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:47,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:47,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:47,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:47,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:47,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:48,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:48,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:48,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:48,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-15 02:13:48,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:48,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:13:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 02:13:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:48,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:48,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:48,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-15 02:13:48,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:48,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:13:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:13:48,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:48,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-15 02:13:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:48,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:48,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:48,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:48,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:48,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-15 02:13:48,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:48,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:13:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:48,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 02:13:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 117 proven. 295 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-15 02:13:48,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381215323] [2020-10-15 02:13:48,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:48,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 02:13:48,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394440425] [2020-10-15 02:13:48,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 02:13:48,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:48,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 02:13:48,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:13:48,853 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 19 states. [2020-10-15 02:13:49,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:49,777 INFO L93 Difference]: Finished difference Result 250 states and 337 transitions. [2020-10-15 02:13:49,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:13:49,778 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-10-15 02:13:49,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:49,780 INFO L225 Difference]: With dead ends: 250 [2020-10-15 02:13:49,780 INFO L226 Difference]: Without dead ends: 135 [2020-10-15 02:13:49,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 02:13:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-15 02:13:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 111. [2020-10-15 02:13:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-15 02:13:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2020-10-15 02:13:49,810 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 94 [2020-10-15 02:13:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:49,811 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2020-10-15 02:13:49,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 02:13:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2020-10-15 02:13:49,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 02:13:49,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:49,814 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:49,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:13:49,815 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:49,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1986084589, now seen corresponding path program 2 times [2020-10-15 02:13:49,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:49,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885311686] [2020-10-15 02:13:49,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:49,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:49,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:54,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:54,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 02:13:54,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:54,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:13:54,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:54,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:54,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-15 02:13:54,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:54,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:54,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:54,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:54,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:54,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:54,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:54,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:54,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:54,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:54,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:54,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:54,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:54,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:13:54,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 02:13:54,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:54,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:54,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:55,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 02:13:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:55,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:55,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:55,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:13:55,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-15 02:13:55,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:55,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:55,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-15 02:13:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:55,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:55,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:55,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:55,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:13:55,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:55,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-15 02:13:55,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:55,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:55,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:55,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:55,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:55,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 198 proven. 396 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-15 02:13:55,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885311686] [2020-10-15 02:13:55,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:55,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 02:13:55,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660103302] [2020-10-15 02:13:55,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 02:13:55,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:55,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 02:13:55,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:13:55,235 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand 10 states. [2020-10-15 02:13:55,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:55,433 INFO L93 Difference]: Finished difference Result 239 states and 325 transitions. [2020-10-15 02:13:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:13:55,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-15 02:13:55,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:55,435 INFO L225 Difference]: With dead ends: 239 [2020-10-15 02:13:55,436 INFO L226 Difference]: Without dead ends: 137 [2020-10-15 02:13:55,437 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 02:13:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-15 02:13:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 123. [2020-10-15 02:13:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-15 02:13:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 159 transitions. [2020-10-15 02:13:55,448 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 159 transitions. Word has length 104 [2020-10-15 02:13:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:55,449 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 159 transitions. [2020-10-15 02:13:55,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 02:13:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 159 transitions. [2020-10-15 02:13:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 02:13:55,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:55,451 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 19, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:55,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:13:55,451 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:55,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:55,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1470577800, now seen corresponding path program 3 times [2020-10-15 02:13:55,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:55,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182797414] [2020-10-15 02:13:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:55,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:55,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:55,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:00,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 02:14:00,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 02:14:00,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:00,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:14:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:00,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:14:00,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:00,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:00,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:00,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:00,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:00,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:00,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:00,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:00,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:00,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:00,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:00,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:14:00,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-15 02:14:00,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:00,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:14:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:14:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:00,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 02:14:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:00,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:00,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:14:00,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:00,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 02:14:00,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:00,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:14:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:14:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:00,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-15 02:14:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:00,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:00,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:14:00,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:00,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 02:14:00,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:00,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:14:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:00,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:14:00,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 273 proven. 546 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-15 02:14:00,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182797414] [2020-10-15 02:14:00,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:00,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:14:00,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753289701] [2020-10-15 02:14:00,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:14:00,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:00,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:14:00,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:14:00,856 INFO L87 Difference]: Start difference. First operand 123 states and 159 transitions. Second operand 11 states. [2020-10-15 02:14:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:01,147 INFO L93 Difference]: Finished difference Result 263 states and 355 transitions. [2020-10-15 02:14:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 02:14:01,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-10-15 02:14:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:01,151 INFO L225 Difference]: With dead ends: 263 [2020-10-15 02:14:01,151 INFO L226 Difference]: Without dead ends: 149 [2020-10-15 02:14:01,153 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 02:14:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-15 02:14:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 135. [2020-10-15 02:14:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-15 02:14:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 174 transitions. [2020-10-15 02:14:01,170 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 174 transitions. Word has length 116 [2020-10-15 02:14:01,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:01,171 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 174 transitions. [2020-10-15 02:14:01,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:14:01,171 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 174 transitions. [2020-10-15 02:14:01,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 02:14:01,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:01,173 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 22, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:01,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:14:01,174 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:01,174 INFO L82 PathProgramCache]: Analyzing trace with hash 800369059, now seen corresponding path program 4 times [2020-10-15 02:14:01,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:01,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085406838] [2020-10-15 02:14:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:01,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:01,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:06,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:06,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 02:14:06,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 02:14:06,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:06,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:14:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-15 02:14:06,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:14:06,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:06,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:06,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:06,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:06,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:06,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:06,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:06,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:06,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:06,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:06,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:06,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 02:14:06,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-15 02:14:06,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:06,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:14:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:14:06,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:06,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 02:14:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:06,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:06,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 02:14:06,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:06,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-15 02:14:06,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:06,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:14:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:14:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:06,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-15 02:14:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:06,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:06,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 02:14:06,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:06,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-15 02:14:06,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:06,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:14:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:14:06,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 360 proven. 720 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-15 02:14:06,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085406838] [2020-10-15 02:14:06,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:06,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:14:06,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216859364] [2020-10-15 02:14:06,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:14:06,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:06,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:14:06,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:14:06,630 INFO L87 Difference]: Start difference. First operand 135 states and 174 transitions. Second operand 12 states. [2020-10-15 02:14:06,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:06,952 INFO L93 Difference]: Finished difference Result 287 states and 385 transitions. [2020-10-15 02:14:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:14:06,953 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-10-15 02:14:06,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:06,955 INFO L225 Difference]: With dead ends: 287 [2020-10-15 02:14:06,955 INFO L226 Difference]: Without dead ends: 161 [2020-10-15 02:14:06,957 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 02:14:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-15 02:14:06,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 147. [2020-10-15 02:14:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-15 02:14:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 189 transitions. [2020-10-15 02:14:06,971 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 189 transitions. Word has length 128 [2020-10-15 02:14:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:06,973 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 189 transitions. [2020-10-15 02:14:06,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:14:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 189 transitions. [2020-10-15 02:14:06,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 02:14:06,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:06,984 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 25, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:06,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:14:06,984 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:06,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:06,985 INFO L82 PathProgramCache]: Analyzing trace with hash 617170494, now seen corresponding path program 5 times [2020-10-15 02:14:06,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:06,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520835814] [2020-10-15 02:14:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:07,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:12,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:12,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-15 02:14:12,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 02:14:12,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:12,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:14:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:14:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:12,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:12,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:12,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:12,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:12,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:12,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:12,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:12,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:12,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:12,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:14:12,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-15 02:14:12,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:12,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:14:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:12,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:14:12,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:12,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 02:14:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:12,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:12,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:14:12,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:12,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-15 02:14:12,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:12,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:14:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:14:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:12,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-15 02:14:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:12,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:12,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:12,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:14:12,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:12,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-15 02:14:12,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:12,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:14:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:14:12,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 459 proven. 918 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-15 02:14:12,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520835814] [2020-10-15 02:14:12,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:12,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 02:14:12,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323283080] [2020-10-15 02:14:12,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:14:12,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:12,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:14:12,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:14:12,698 INFO L87 Difference]: Start difference. First operand 147 states and 189 transitions. Second operand 13 states. [2020-10-15 02:14:13,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:13,004 INFO L93 Difference]: Finished difference Result 311 states and 415 transitions. [2020-10-15 02:14:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 02:14:13,005 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 140 [2020-10-15 02:14:13,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:13,007 INFO L225 Difference]: With dead ends: 311 [2020-10-15 02:14:13,007 INFO L226 Difference]: Without dead ends: 173 [2020-10-15 02:14:13,012 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 02:14:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-15 02:14:13,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 159. [2020-10-15 02:14:13,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-15 02:14:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 204 transitions. [2020-10-15 02:14:13,028 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 204 transitions. Word has length 140 [2020-10-15 02:14:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:13,029 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 204 transitions. [2020-10-15 02:14:13,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:14:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 204 transitions. [2020-10-15 02:14:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-15 02:14:13,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:13,032 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:13,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:14:13,033 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:13,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:13,033 INFO L82 PathProgramCache]: Analyzing trace with hash -217787815, now seen corresponding path program 6 times [2020-10-15 02:14:13,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:13,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407310188] [2020-10-15 02:14:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:18,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:18,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-15 02:14:18,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 02:14:18,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:18,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:14:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:14:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:18,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:18,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:18,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:18,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:18,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:18,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:18,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:18,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:18,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:18,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 02:14:18,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:18,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-15 02:14:18,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:18,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:18,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:14:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:14:18,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:18,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:14:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:18,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:18,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 02:14:18,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:18,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-15 02:14:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:18,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:14:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:18,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:14:18,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-15 02:14:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:18,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:18,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 02:14:18,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:18,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-15 02:14:18,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:18,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:14:18,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:18,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:14:18,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:19,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 570 proven. 1140 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-15 02:14:19,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407310188] [2020-10-15 02:14:19,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:19,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 02:14:19,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919925924] [2020-10-15 02:14:19,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:14:19,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:19,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:14:19,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:14:19,040 INFO L87 Difference]: Start difference. First operand 159 states and 204 transitions. Second operand 14 states. [2020-10-15 02:14:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:19,402 INFO L93 Difference]: Finished difference Result 335 states and 445 transitions. [2020-10-15 02:14:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 02:14:19,403 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-10-15 02:14:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:19,405 INFO L225 Difference]: With dead ends: 335 [2020-10-15 02:14:19,405 INFO L226 Difference]: Without dead ends: 185 [2020-10-15 02:14:19,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:14:19,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-15 02:14:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2020-10-15 02:14:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-15 02:14:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 219 transitions. [2020-10-15 02:14:19,420 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 219 transitions. Word has length 152 [2020-10-15 02:14:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:19,421 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 219 transitions. [2020-10-15 02:14:19,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:14:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 219 transitions. [2020-10-15 02:14:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 02:14:19,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:19,424 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 31, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:19,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:14:19,425 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:19,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:19,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1550257652, now seen corresponding path program 7 times [2020-10-15 02:14:19,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:19,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916411788] [2020-10-15 02:14:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:19,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:24,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-15 02:14:24,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:24,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-15 02:14:24,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:24,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:14:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:24,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:24,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:24,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:24,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:24,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:24,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:24,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:24,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:24,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:24,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:24,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:24,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 02:14:24,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:24,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-15 02:14:24,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:24,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:14:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:24,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:24,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:24,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-15 02:14:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:25,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:25,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 02:14:25,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:25,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-15 02:14:25,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:25,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:14:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:25,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-15 02:14:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:25,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:25,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:25,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 02:14:25,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-15 02:14:25,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:25,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:14:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 693 proven. 1386 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-15 02:14:25,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916411788] [2020-10-15 02:14:25,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:25,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 02:14:25,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490630693] [2020-10-15 02:14:25,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 02:14:25,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:25,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 02:14:25,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:14:25,501 INFO L87 Difference]: Start difference. First operand 171 states and 219 transitions. Second operand 15 states. [2020-10-15 02:14:25,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:25,910 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-10-15 02:14:25,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 02:14:25,910 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 164 [2020-10-15 02:14:25,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:25,912 INFO L225 Difference]: With dead ends: 359 [2020-10-15 02:14:25,912 INFO L226 Difference]: Without dead ends: 197 [2020-10-15 02:14:25,915 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 02:14:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-15 02:14:25,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 183. [2020-10-15 02:14:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-15 02:14:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2020-10-15 02:14:25,929 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 164 [2020-10-15 02:14:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:25,929 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2020-10-15 02:14:25,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 02:14:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2020-10-15 02:14:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 02:14:25,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:25,933 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 34, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:25,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:14:25,933 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:25,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:25,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1731217137, now seen corresponding path program 8 times [2020-10-15 02:14:25,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:25,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819086580] [2020-10-15 02:14:25,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:25,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:25,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:26,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:30,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:30,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-15 02:14:30,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:30,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 02:14:30,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:30,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:30,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:14:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 02:14:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:30,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:30,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:30,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:30,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:30,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:30,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:30,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:30,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:30,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:31,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:31,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:31,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:14:31,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-15 02:14:31,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:31,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:14:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:31,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:31,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 02:14:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:31,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:31,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:14:31,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:31,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-15 02:14:31,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:31,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:14:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:31,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-15 02:14:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:31,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:31,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:31,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:31,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:14:31,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:31,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-15 02:14:31,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:31,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:14:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:31,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2643 backedges. 828 proven. 1656 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-15 02:14:31,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819086580] [2020-10-15 02:14:31,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:31,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 02:14:31,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825642680] [2020-10-15 02:14:31,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 02:14:31,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:31,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 02:14:31,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:14:31,702 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand 16 states. [2020-10-15 02:14:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:32,087 INFO L93 Difference]: Finished difference Result 383 states and 505 transitions. [2020-10-15 02:14:32,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 02:14:32,087 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 176 [2020-10-15 02:14:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:32,089 INFO L225 Difference]: With dead ends: 383 [2020-10-15 02:14:32,090 INFO L226 Difference]: Without dead ends: 209 [2020-10-15 02:14:32,094 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 02:14:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-15 02:14:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 195. [2020-10-15 02:14:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-15 02:14:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 249 transitions. [2020-10-15 02:14:32,115 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 249 transitions. Word has length 176 [2020-10-15 02:14:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:32,116 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 249 transitions. [2020-10-15 02:14:32,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 02:14:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 249 transitions. [2020-10-15 02:14:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-15 02:14:32,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:32,120 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 37, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:32,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:14:32,120 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:32,120 INFO L82 PathProgramCache]: Analyzing trace with hash -973171798, now seen corresponding path program 9 times [2020-10-15 02:14:32,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:32,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506412610] [2020-10-15 02:14:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:32,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:32,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:37,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:37,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-15 02:14:37,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 02:14:37,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:37,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:14:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:14:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:37,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:37,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:37,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:37,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:37,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 02:14:37,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:37,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:37,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:37,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:37,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:37,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:37,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:37,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:14:37,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:37,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-15 02:14:37,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:37,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:14:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:37,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:14:37,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:37,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-15 02:14:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:37,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:37,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:37,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:14:37,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-15 02:14:37,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:37,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:14:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:14:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-15 02:14:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:37,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:37,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:14:37,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:37,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-15 02:14:37,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:37,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:14:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:14:37,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3096 backedges. 975 proven. 1950 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-15 02:14:37,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506412610] [2020-10-15 02:14:37,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:37,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 02:14:37,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849412977] [2020-10-15 02:14:37,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 02:14:37,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:37,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 02:14:37,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:14:37,893 INFO L87 Difference]: Start difference. First operand 195 states and 249 transitions. Second operand 17 states. [2020-10-15 02:14:38,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:38,319 INFO L93 Difference]: Finished difference Result 407 states and 535 transitions. [2020-10-15 02:14:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 02:14:38,320 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 188 [2020-10-15 02:14:38,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:38,323 INFO L225 Difference]: With dead ends: 407 [2020-10-15 02:14:38,323 INFO L226 Difference]: Without dead ends: 221 [2020-10-15 02:14:38,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:14:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-15 02:14:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 207. [2020-10-15 02:14:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-15 02:14:38,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 264 transitions. [2020-10-15 02:14:38,339 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 264 transitions. Word has length 188 [2020-10-15 02:14:38,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:38,339 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 264 transitions. [2020-10-15 02:14:38,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 02:14:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 264 transitions. [2020-10-15 02:14:38,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-15 02:14:38,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:38,343 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 40, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:38,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:14:38,344 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:38,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1469275589, now seen corresponding path program 10 times [2020-10-15 02:14:38,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:38,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446674499] [2020-10-15 02:14:38,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:38,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:38,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:43,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:43,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-15 02:14:43,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 02:14:43,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:43,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:43,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:14:43,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:43,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:14:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:43,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:43,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:43,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:43,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:43,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:43,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:43,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:43,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:43,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:43,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:43,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:43,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:14:43,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:43,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-15 02:14:43,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:43,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:14:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:14:43,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-15 02:14:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:43,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:43,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:43,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:14:43,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-15 02:14:43,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:43,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:14:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:14:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:43,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-15 02:14:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:43,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:44,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:44,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:14:44,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-15 02:14:44,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:44,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:14:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:14:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3585 backedges. 1134 proven. 2268 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-15 02:14:44,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446674499] [2020-10-15 02:14:44,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:44,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 02:14:44,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42979853] [2020-10-15 02:14:44,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 02:14:44,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:44,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 02:14:44,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-15 02:14:44,172 INFO L87 Difference]: Start difference. First operand 207 states and 264 transitions. Second operand 18 states. [2020-10-15 02:14:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:44,661 INFO L93 Difference]: Finished difference Result 431 states and 565 transitions. [2020-10-15 02:14:44,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 02:14:44,662 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 200 [2020-10-15 02:14:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:44,666 INFO L225 Difference]: With dead ends: 431 [2020-10-15 02:14:44,666 INFO L226 Difference]: Without dead ends: 233 [2020-10-15 02:14:44,669 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 02:14:44,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-15 02:14:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 219. [2020-10-15 02:14:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-15 02:14:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 279 transitions. [2020-10-15 02:14:44,689 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 279 transitions. Word has length 200 [2020-10-15 02:14:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:44,690 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 279 transitions. [2020-10-15 02:14:44,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 02:14:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 279 transitions. [2020-10-15 02:14:44,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 02:14:44,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:44,694 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 43, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:44,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:14:44,694 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:44,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:44,695 INFO L82 PathProgramCache]: Analyzing trace with hash -2029136032, now seen corresponding path program 11 times [2020-10-15 02:14:44,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:44,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744891895] [2020-10-15 02:14:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:44,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:44,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:44,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:44,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:49,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:49,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-15 02:14:49,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:49,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:14:49,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:49,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:14:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:14:49,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:49,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:49,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:49,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:49,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:49,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:49,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:49,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:49,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:49,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:49,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:14:49,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:49,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-15 02:14:49,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:49,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:49,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:14:49,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:49,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:14:49,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 02:14:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:50,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:50,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:50,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:14:50,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:50,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-15 02:14:50,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:50,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:14:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:14:50,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:50,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-15 02:14:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:50,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:50,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:14:50,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:50,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-15 02:14:50,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:50,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:14:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:14:50,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1305 proven. 2610 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-15 02:14:50,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744891895] [2020-10-15 02:14:50,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:50,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 02:14:50,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382903029] [2020-10-15 02:14:50,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 02:14:50,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:50,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 02:14:50,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:14:50,622 INFO L87 Difference]: Start difference. First operand 219 states and 279 transitions. Second operand 19 states. [2020-10-15 02:14:51,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:51,123 INFO L93 Difference]: Finished difference Result 455 states and 595 transitions. [2020-10-15 02:14:51,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:14:51,123 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 212 [2020-10-15 02:14:51,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:51,125 INFO L225 Difference]: With dead ends: 455 [2020-10-15 02:14:51,125 INFO L226 Difference]: Without dead ends: 245 [2020-10-15 02:14:51,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:14:51,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-15 02:14:51,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 231. [2020-10-15 02:14:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-15 02:14:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 294 transitions. [2020-10-15 02:14:51,142 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 294 transitions. Word has length 212 [2020-10-15 02:14:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:51,143 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 294 transitions. [2020-10-15 02:14:51,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 02:14:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 294 transitions. [2020-10-15 02:14:51,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-15 02:14:51,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:51,148 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 46, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:51,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:14:51,148 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:51,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1009926021, now seen corresponding path program 12 times [2020-10-15 02:14:51,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:51,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892214787] [2020-10-15 02:14:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:51,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:51,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:51,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:51,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:56,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:56,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-15 02:14:56,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 02:14:56,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:56,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:56,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:14:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:56,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:56,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:56,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:56,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:56,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:56,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:56,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:56,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:56,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:56,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:14:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-15 02:14:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:56,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:14:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:56,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-15 02:14:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:56,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:56,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:56,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:14:56,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-15 02:14:56,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:56,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:56,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:14:56,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:56,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-15 02:14:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:56,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:57,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:57,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:14:57,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-15 02:14:57,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:57,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:14:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4671 backedges. 1488 proven. 2976 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-15 02:14:57,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892214787] [2020-10-15 02:14:57,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:57,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 02:14:57,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484844262] [2020-10-15 02:14:57,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 02:14:57,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:57,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 02:14:57,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-15 02:14:57,224 INFO L87 Difference]: Start difference. First operand 231 states and 294 transitions. Second operand 20 states. [2020-10-15 02:14:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:57,787 INFO L93 Difference]: Finished difference Result 479 states and 625 transitions. [2020-10-15 02:14:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:14:57,787 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 224 [2020-10-15 02:14:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:57,791 INFO L225 Difference]: With dead ends: 479 [2020-10-15 02:14:57,791 INFO L226 Difference]: Without dead ends: 257 [2020-10-15 02:14:57,794 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 02:14:57,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-15 02:14:57,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 243. [2020-10-15 02:14:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-15 02:14:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 309 transitions. [2020-10-15 02:14:57,809 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 309 transitions. Word has length 224 [2020-10-15 02:14:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:57,809 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 309 transitions. [2020-10-15 02:14:57,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 02:14:57,810 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 309 transitions. [2020-10-15 02:14:57,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-15 02:14:57,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:57,815 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 49, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:57,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:14:57,815 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:57,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:57,815 INFO L82 PathProgramCache]: Analyzing trace with hash 588437782, now seen corresponding path program 13 times [2020-10-15 02:14:57,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:57,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409417039] [2020-10-15 02:14:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:57,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:57,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:02,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:02,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-15 02:15:02,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 02:15:02,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:02,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:15:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-15 02:15:02,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 02:15:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:02,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:02,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:02,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:02,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:02,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:02,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:02,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:02,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:03,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:03,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:15:03,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-15 02:15:03,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:03,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:15:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 02:15:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:03,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-15 02:15:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:03,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:03,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:03,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:15:03,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-15 02:15:03,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:03,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:15:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 02:15:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-15 02:15:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:03,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:03,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:03,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:15:03,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-15 02:15:03,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:03,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:15:03,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 02:15:03,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5268 backedges. 1683 proven. 3366 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-15 02:15:04,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409417039] [2020-10-15 02:15:04,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:04,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 02:15:04,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909571847] [2020-10-15 02:15:04,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 02:15:04,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:04,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 02:15:04,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:15:04,010 INFO L87 Difference]: Start difference. First operand 243 states and 309 transitions. Second operand 21 states. [2020-10-15 02:15:04,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:04,561 INFO L93 Difference]: Finished difference Result 503 states and 655 transitions. [2020-10-15 02:15:04,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 02:15:04,562 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 236 [2020-10-15 02:15:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:04,565 INFO L225 Difference]: With dead ends: 503 [2020-10-15 02:15:04,565 INFO L226 Difference]: Without dead ends: 269 [2020-10-15 02:15:04,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 02:15:04,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-15 02:15:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 255. [2020-10-15 02:15:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-15 02:15:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 324 transitions. [2020-10-15 02:15:04,588 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 324 transitions. Word has length 236 [2020-10-15 02:15:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:04,589 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 324 transitions. [2020-10-15 02:15:04,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 02:15:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 324 transitions. [2020-10-15 02:15:04,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-15 02:15:04,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:04,594 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 52, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:04,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:15:04,594 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:04,595 INFO L82 PathProgramCache]: Analyzing trace with hash -805510863, now seen corresponding path program 14 times [2020-10-15 02:15:04,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:04,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004973981] [2020-10-15 02:15:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:04,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:04,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:09,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:09,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-15 02:15:09,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-15 02:15:09,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:09,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:15:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-15 02:15:09,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:15:09,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:09,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:09,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:09,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:09,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:09,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:09,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:09,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:09,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:09,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:09,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:09,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:09,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:15:09,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:09,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-15 02:15:09,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:09,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:15:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:09,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:15:09,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:10,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-15 02:15:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:10,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:10,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:10,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:15:10,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:10,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-15 02:15:10,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:10,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:15:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:15:10,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-15 02:15:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:11,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:11,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:15:11,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:11,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-15 02:15:11,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:11,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:15:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 02:15:11,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:15:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5901 backedges. 1890 proven. 3780 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-15 02:15:11,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004973981] [2020-10-15 02:15:11,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:11,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 02:15:11,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913830315] [2020-10-15 02:15:11,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 02:15:11,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:11,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 02:15:11,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-15 02:15:11,326 INFO L87 Difference]: Start difference. First operand 255 states and 324 transitions. Second operand 22 states. [2020-10-15 02:15:12,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:12,008 INFO L93 Difference]: Finished difference Result 527 states and 685 transitions. [2020-10-15 02:15:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 02:15:12,009 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 248 [2020-10-15 02:15:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:12,012 INFO L225 Difference]: With dead ends: 527 [2020-10-15 02:15:12,012 INFO L226 Difference]: Without dead ends: 281 [2020-10-15 02:15:12,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 02:15:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-15 02:15:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 267. [2020-10-15 02:15:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-15 02:15:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 339 transitions. [2020-10-15 02:15:12,037 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 339 transitions. Word has length 248 [2020-10-15 02:15:12,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:12,037 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 339 transitions. [2020-10-15 02:15:12,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 02:15:12,037 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 339 transitions. [2020-10-15 02:15:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-15 02:15:12,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:12,041 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 55, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:12,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 02:15:12,042 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:12,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2072746188, now seen corresponding path program 15 times [2020-10-15 02:15:12,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:12,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737046653] [2020-10-15 02:15:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:12,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:17,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:17,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-15 02:15:17,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:17,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 02:15:17,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:17,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:17,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:15:17,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:15:17,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 02:15:17,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:17,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:17,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:17,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:17,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:17,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:17,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:17,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:17,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:17,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:17,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:17,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:17,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:17,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:17,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 02:15:17,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:17,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-15 02:15:17,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:17,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:15:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 02:15:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:17,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-15 02:15:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:17,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:18,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:18,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 02:15:18,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:18,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-15 02:15:18,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:18,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:15:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 02:15:18,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:18,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-15 02:15:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:18,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:18,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:18,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 02:15:18,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:18,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-15 02:15:18,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:18,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:15:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 02:15:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6570 backedges. 2109 proven. 4218 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-15 02:15:18,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737046653] [2020-10-15 02:15:18,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:18,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 02:15:18,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973948845] [2020-10-15 02:15:18,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 02:15:18,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:18,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 02:15:18,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:15:18,576 INFO L87 Difference]: Start difference. First operand 267 states and 339 transitions. Second operand 23 states. [2020-10-15 02:15:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:19,331 INFO L93 Difference]: Finished difference Result 551 states and 715 transitions. [2020-10-15 02:15:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 02:15:19,332 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 260 [2020-10-15 02:15:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:19,336 INFO L225 Difference]: With dead ends: 551 [2020-10-15 02:15:19,336 INFO L226 Difference]: Without dead ends: 293 [2020-10-15 02:15:19,338 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 02:15:19,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-15 02:15:19,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 279. [2020-10-15 02:15:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-15 02:15:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 354 transitions. [2020-10-15 02:15:19,359 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 354 transitions. Word has length 260 [2020-10-15 02:15:19,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:19,360 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 354 transitions. [2020-10-15 02:15:19,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 02:15:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 354 transitions. [2020-10-15 02:15:19,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-15 02:15:19,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:19,364 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 58, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:19,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 02:15:19,364 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:19,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:19,364 INFO L82 PathProgramCache]: Analyzing trace with hash -862011417, now seen corresponding path program 16 times [2020-10-15 02:15:19,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:19,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582476505] [2020-10-15 02:15:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:19,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:24,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:24,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-15 02:15:24,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 02:15:24,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:24,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:24,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:15:24,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-15 02:15:24,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 02:15:24,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:24,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:24,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:24,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:24,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:24,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:24,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:24,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:24,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:24,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 02:15:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-15 02:15:24,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:24,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:15:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 02:15:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:25,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-15 02:15:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:25,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:25,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 02:15:25,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-15 02:15:25,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:25,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:15:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:25,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 02:15:25,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:25,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-15 02:15:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:25,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:25,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:25,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:25,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 02:15:25,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-15 02:15:25,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:25,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:15:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 02:15:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7275 backedges. 2340 proven. 4680 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-15 02:15:25,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582476505] [2020-10-15 02:15:25,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:25,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 02:15:25,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446698866] [2020-10-15 02:15:25,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 02:15:25,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:25,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 02:15:25,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-15 02:15:25,989 INFO L87 Difference]: Start difference. First operand 279 states and 354 transitions. Second operand 24 states. [2020-10-15 02:15:26,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:26,731 INFO L93 Difference]: Finished difference Result 575 states and 745 transitions. [2020-10-15 02:15:26,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 02:15:26,731 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 272 [2020-10-15 02:15:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:26,733 INFO L225 Difference]: With dead ends: 575 [2020-10-15 02:15:26,733 INFO L226 Difference]: Without dead ends: 305 [2020-10-15 02:15:26,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 02:15:26,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-15 02:15:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 291. [2020-10-15 02:15:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-15 02:15:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 369 transitions. [2020-10-15 02:15:26,751 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 369 transitions. Word has length 272 [2020-10-15 02:15:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:26,751 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 369 transitions. [2020-10-15 02:15:26,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 02:15:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 369 transitions. [2020-10-15 02:15:26,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-15 02:15:26,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:26,755 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 61, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:26,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 02:15:26,755 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:26,756 INFO L82 PathProgramCache]: Analyzing trace with hash -805955966, now seen corresponding path program 17 times [2020-10-15 02:15:26,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:26,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054513386] [2020-10-15 02:15:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:26,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:31,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:31,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-15 02:15:31,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-15 02:15:31,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:31,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:15:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:15:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:15:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:31,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:31,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:31,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:31,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:31,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:31,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:31,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:32,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:32,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 02:15:32,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:32,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-15 02:15:32,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:32,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:32,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:15:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:15:32,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:32,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-15 02:15:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:32,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:33,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:33,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 02:15:33,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-15 02:15:33,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:33,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:15:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:15:33,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:33,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-15 02:15:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:33,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:33,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:33,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:33,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 02:15:33,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:33,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-15 02:15:33,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:33,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:15:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 02:15:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8016 backedges. 2583 proven. 5166 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-15 02:15:33,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054513386] [2020-10-15 02:15:33,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:33,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 02:15:33,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538333248] [2020-10-15 02:15:33,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 02:15:33,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:33,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 02:15:33,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:15:33,682 INFO L87 Difference]: Start difference. First operand 291 states and 369 transitions. Second operand 25 states. [2020-10-15 02:15:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:34,421 INFO L93 Difference]: Finished difference Result 599 states and 775 transitions. [2020-10-15 02:15:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:15:34,421 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 284 [2020-10-15 02:15:34,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:34,425 INFO L225 Difference]: With dead ends: 599 [2020-10-15 02:15:34,425 INFO L226 Difference]: Without dead ends: 317 [2020-10-15 02:15:34,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 02:15:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-15 02:15:34,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303. [2020-10-15 02:15:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-15 02:15:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 384 transitions. [2020-10-15 02:15:34,442 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 384 transitions. Word has length 284 [2020-10-15 02:15:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:34,443 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 384 transitions. [2020-10-15 02:15:34,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 02:15:34,443 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 384 transitions. [2020-10-15 02:15:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-15 02:15:34,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:34,447 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 64, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:34,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 02:15:34,447 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:34,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:34,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1748065437, now seen corresponding path program 18 times [2020-10-15 02:15:34,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:34,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159218866] [2020-10-15 02:15:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:34,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:34,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:34,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:39,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:39,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-15 02:15:39,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:15:39,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 02:15:39,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:39,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 106 [2020-10-15 02:15:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:15:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-15 02:15:39,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:39,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:39,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:39,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:39,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:39,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:39,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:15:39,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:39,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:39,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:39,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:39,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:40,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:44,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:44,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 02:15:44,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:44,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:15:44,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:44,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:44,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:15:44,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:44,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 02:15:44,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:45,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-15 02:15:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:45,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:46,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:46,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 02:15:46,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:46,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1497 [2020-10-15 02:15:46,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:46,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:15:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 02:15:46,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-15 02:15:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:46,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:46,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:47,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:47,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 02:15:47,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-15 02:15:47,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:47,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:15:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:47,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 02:15:47,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8793 backedges. 2838 proven. 5676 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-10-15 02:15:47,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159218866] [2020-10-15 02:15:47,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:47,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 02:15:47,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766154149] [2020-10-15 02:15:47,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 02:15:47,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:47,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 02:15:47,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2020-10-15 02:15:47,337 INFO L87 Difference]: Start difference. First operand 303 states and 384 transitions. Second operand 28 states. [2020-10-15 02:15:48,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:48,155 INFO L93 Difference]: Finished difference Result 623 states and 805 transitions. [2020-10-15 02:15:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 02:15:48,158 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 296 [2020-10-15 02:15:48,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:48,161 INFO L225 Difference]: With dead ends: 623 [2020-10-15 02:15:48,161 INFO L226 Difference]: Without dead ends: 329 [2020-10-15 02:15:48,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=904, Invalid=1646, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 02:15:48,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-15 02:15:48,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 315. [2020-10-15 02:15:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-15 02:15:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 399 transitions. [2020-10-15 02:15:48,181 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 399 transitions. Word has length 296 [2020-10-15 02:15:48,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:48,181 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 399 transitions. [2020-10-15 02:15:48,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 02:15:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 399 transitions. [2020-10-15 02:15:48,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-15 02:15:48,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:48,185 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 67, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:48,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 02:15:48,186 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:48,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:48,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1110420936, now seen corresponding path program 19 times [2020-10-15 02:15:48,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:48,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957342064] [2020-10-15 02:15:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:48,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:53,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:53,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-15 02:15:53,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:53,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 02:15:53,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:53,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:15:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:15:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 02:15:53,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:53,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:53,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:53,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:53,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:53,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:53,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:53,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:53,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:53,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:15:53,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:53,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:53,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 02:15:53,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:53,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-15 02:15:53,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:53,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:15:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 02:15:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:54,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-15 02:15:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:54,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:54,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:54,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:54,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 02:15:54,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:54,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-15 02:15:54,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:54,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:15:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 02:15:54,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:54,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-15 02:15:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:54,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:55,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:55,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 02:15:55,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:55,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-15 02:15:55,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:55,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:15:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-15 02:15:55,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9606 backedges. 3105 proven. 6210 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-15 02:15:55,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957342064] [2020-10-15 02:15:55,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:55,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 02:15:55,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130248896] [2020-10-15 02:15:55,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 02:15:55,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:55,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 02:15:55,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-15 02:15:55,441 INFO L87 Difference]: Start difference. First operand 315 states and 399 transitions. Second operand 27 states. [2020-10-15 02:15:56,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:56,300 INFO L93 Difference]: Finished difference Result 647 states and 835 transitions. [2020-10-15 02:15:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 02:15:56,301 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 308 [2020-10-15 02:15:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:56,304 INFO L225 Difference]: With dead ends: 647 [2020-10-15 02:15:56,304 INFO L226 Difference]: Without dead ends: 341 [2020-10-15 02:15:56,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 02:15:56,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-15 02:15:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 327. [2020-10-15 02:15:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-15 02:15:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 414 transitions. [2020-10-15 02:15:56,324 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 414 transitions. Word has length 308 [2020-10-15 02:15:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:56,324 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 414 transitions. [2020-10-15 02:15:56,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 02:15:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 414 transitions. [2020-10-15 02:15:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-15 02:15:56,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:56,328 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 70, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:56,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 02:15:56,329 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:56,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:56,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1355630765, now seen corresponding path program 20 times [2020-10-15 02:15:56,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:56,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447640074] [2020-10-15 02:15:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:01,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:01,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-15 02:16:01,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:01,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-15 02:16:01,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:01,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:16:01,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:01,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 02:16:01,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:01,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:01,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:01,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:01,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:01,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:01,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:01,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:01,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:01,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:02,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:02,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 02:16:02,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:02,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-10-15 02:16:02,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:02,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:16:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 02:16:02,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:02,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-15 02:16:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:02,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:02,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:03,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:03,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 02:16:03,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:03,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-15 02:16:03,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:03,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:16:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 02:16:03,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:03,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-15 02:16:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:03,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:03,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:03,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:03,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 02:16:03,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:03,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-15 02:16:03,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:03,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:16:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 02:16:03,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 3384 proven. 6768 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-15 02:16:03,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447640074] [2020-10-15 02:16:03,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:03,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 02:16:03,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387153021] [2020-10-15 02:16:03,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 02:16:03,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:03,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 02:16:03,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-15 02:16:03,887 INFO L87 Difference]: Start difference. First operand 327 states and 414 transitions. Second operand 28 states. [2020-10-15 02:16:04,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:04,772 INFO L93 Difference]: Finished difference Result 671 states and 865 transitions. [2020-10-15 02:16:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 02:16:04,773 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 320 [2020-10-15 02:16:04,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:04,776 INFO L225 Difference]: With dead ends: 671 [2020-10-15 02:16:04,776 INFO L226 Difference]: Without dead ends: 353 [2020-10-15 02:16:04,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 02:16:04,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-15 02:16:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 339. [2020-10-15 02:16:04,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-15 02:16:04,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 429 transitions. [2020-10-15 02:16:04,796 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 429 transitions. Word has length 320 [2020-10-15 02:16:04,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:04,796 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 429 transitions. [2020-10-15 02:16:04,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 02:16:04,797 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 429 transitions. [2020-10-15 02:16:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-15 02:16:04,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:04,801 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 73, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:04,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 02:16:04,801 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:04,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:04,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1083722734, now seen corresponding path program 21 times [2020-10-15 02:16:04,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:04,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87124864] [2020-10-15 02:16:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:05,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:09,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:09,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-15 02:16:09,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-15 02:16:09,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:09,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 97 [2020-10-15 02:16:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:16:09,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-15 02:16:09,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:09,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:09,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:09,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:09,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:09,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:09,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:09,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:14,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:14,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 02:16:14,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:14,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:16:14,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:14,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:16:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 02:16:14,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:15,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-15 02:16:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:15,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:16,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:16,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 02:16:16,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:16,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-15 02:16:16,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:16,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:16:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 02:16:16,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:16,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-15 02:16:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:16,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:16,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:17,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:17,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 02:16:17,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:17,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-15 02:16:17,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:17,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:16:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:17,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 02:16:17,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11340 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-15 02:16:17,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87124864] [2020-10-15 02:16:17,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:17,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 02:16:17,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247941906] [2020-10-15 02:16:17,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 02:16:17,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:17,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 02:16:17,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=546, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:16:17,325 INFO L87 Difference]: Start difference. First operand 339 states and 429 transitions. Second operand 31 states. [2020-10-15 02:16:18,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:18,352 INFO L93 Difference]: Finished difference Result 695 states and 895 transitions. [2020-10-15 02:16:18,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 02:16:18,353 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 332 [2020-10-15 02:16:18,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:18,357 INFO L225 Difference]: With dead ends: 695 [2020-10-15 02:16:18,357 INFO L226 Difference]: Without dead ends: 365 [2020-10-15 02:16:18,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1138, Invalid=2054, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 02:16:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-15 02:16:18,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 351. [2020-10-15 02:16:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-15 02:16:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 444 transitions. [2020-10-15 02:16:18,378 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 444 transitions. Word has length 332 [2020-10-15 02:16:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:18,378 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 444 transitions. [2020-10-15 02:16:18,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 02:16:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 444 transitions. [2020-10-15 02:16:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-15 02:16:18,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:18,382 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 76, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:18,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 02:16:18,383 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash 203477001, now seen corresponding path program 22 times [2020-10-15 02:16:18,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:18,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139879160] [2020-10-15 02:16:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:18,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:18,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:23,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:23,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-15 02:16:23,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:23,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 02:16:23,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:23,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:16:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:23,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 02:16:23,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:23,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:23,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:23,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:23,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:23,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:23,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:23,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:24,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:24,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 02:16:24,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-15 02:16:24,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:24,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:16:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:24,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 02:16:24,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-15 02:16:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:24,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:24,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:25,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:25,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 02:16:25,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:25,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-15 02:16:25,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:25,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:16:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:25,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 02:16:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:25,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-15 02:16:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:25,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:26,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:26,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 02:16:26,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:26,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-10-15 02:16:26,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:26,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:16:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-15 02:16:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12261 backedges. 3978 proven. 7956 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2020-10-15 02:16:26,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139879160] [2020-10-15 02:16:26,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:26,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 02:16:26,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877527476] [2020-10-15 02:16:26,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 02:16:26,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:26,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 02:16:26,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-15 02:16:26,422 INFO L87 Difference]: Start difference. First operand 351 states and 444 transitions. Second operand 30 states. [2020-10-15 02:16:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:27,430 INFO L93 Difference]: Finished difference Result 719 states and 925 transitions. [2020-10-15 02:16:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 02:16:27,431 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 344 [2020-10-15 02:16:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:27,433 INFO L225 Difference]: With dead ends: 719 [2020-10-15 02:16:27,434 INFO L226 Difference]: Without dead ends: 377 [2020-10-15 02:16:27,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 02:16:27,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-15 02:16:27,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 363. [2020-10-15 02:16:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-15 02:16:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 459 transitions. [2020-10-15 02:16:27,453 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 459 transitions. Word has length 344 [2020-10-15 02:16:27,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:27,454 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 459 transitions. [2020-10-15 02:16:27,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 02:16:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 459 transitions. [2020-10-15 02:16:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-15 02:16:27,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:27,459 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 81, 79, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:27,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 02:16:27,459 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:27,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:27,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1312029788, now seen corresponding path program 23 times [2020-10-15 02:16:27,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:27,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215615338] [2020-10-15 02:16:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:28,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:32,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-15 02:16:32,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:16:32,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 02:16:32,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:32,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 91 [2020-10-15 02:16:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:16:32,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-15 02:16:32,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:32,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:32,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:32,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:32,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:32,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:32,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:37,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:37,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 02:16:37,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:16:37,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:37,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:37,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:16:37,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:37,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 02:16:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:38,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-15 02:16:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:38,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:38,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:39,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 02:16:39,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:39,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1528 [2020-10-15 02:16:39,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:39,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:16:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 02:16:39,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:39,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-10-15 02:16:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:39,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:40,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:40,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 02:16:40,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:40,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-15 02:16:40,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:40,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:40,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:16:40,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:40,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 02:16:40,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 13218 backedges. 4293 proven. 8586 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2020-10-15 02:16:40,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215615338] [2020-10-15 02:16:40,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:40,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-15 02:16:40,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851305765] [2020-10-15 02:16:40,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 02:16:40,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:40,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 02:16:40,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=615, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 02:16:40,666 INFO L87 Difference]: Start difference. First operand 363 states and 459 transitions. Second operand 33 states. [2020-10-15 02:16:41,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:41,748 INFO L93 Difference]: Finished difference Result 743 states and 955 transitions. [2020-10-15 02:16:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 02:16:41,749 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 356 [2020-10-15 02:16:41,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:41,752 INFO L225 Difference]: With dead ends: 743 [2020-10-15 02:16:41,752 INFO L226 Difference]: Without dead ends: 389 [2020-10-15 02:16:41,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1309, Invalid=2351, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 02:16:41,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-15 02:16:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 375. [2020-10-15 02:16:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-15 02:16:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 474 transitions. [2020-10-15 02:16:41,773 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 474 transitions. Word has length 356 [2020-10-15 02:16:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:41,774 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 474 transitions. [2020-10-15 02:16:41,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-15 02:16:41,774 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 474 transitions. [2020-10-15 02:16:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-15 02:16:41,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:41,778 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 84, 82, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:41,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 02:16:41,779 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:41,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:41,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1199154879, now seen corresponding path program 24 times [2020-10-15 02:16:41,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:41,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019736992] [2020-10-15 02:16:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:41,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:41,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:45,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:47,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:47,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-15 02:16:47,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:16:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6185 [2020-10-15 02:16:47,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:47,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 88 [2020-10-15 02:16:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:16:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-15 02:16:47,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:48,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:48,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:48,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:48,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:48,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:53,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:53,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 02:16:53,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:53,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:16:53,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:53,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:16:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:53,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 02:16:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-15 02:16:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:53,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:54,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:54,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:54,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 02:16:54,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-10-15 02:16:54,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:54,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:16:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 02:16:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:54,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-15 02:16:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:54,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:54,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:55,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:55,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 02:16:55,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:55,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-15 02:16:55,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:55,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:16:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-15 02:16:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 14211 backedges. 4620 proven. 9240 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-10-15 02:16:55,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019736992] [2020-10-15 02:16:55,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:55,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 02:16:55,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964482061] [2020-10-15 02:16:55,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 02:16:55,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:55,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 02:16:55,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=651, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 02:16:55,733 INFO L87 Difference]: Start difference. First operand 375 states and 474 transitions. Second operand 34 states. [2020-10-15 02:16:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:56,871 INFO L93 Difference]: Finished difference Result 767 states and 985 transitions. [2020-10-15 02:16:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 02:16:56,872 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 368 [2020-10-15 02:16:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:56,875 INFO L225 Difference]: With dead ends: 767 [2020-10-15 02:16:56,875 INFO L226 Difference]: Without dead ends: 401 [2020-10-15 02:16:56,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1399, Invalid=2507, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 02:16:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-15 02:16:56,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 387. [2020-10-15 02:16:56,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-10-15 02:16:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 489 transitions. [2020-10-15 02:16:56,895 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 489 transitions. Word has length 368 [2020-10-15 02:16:56,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:56,895 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 489 transitions. [2020-10-15 02:16:56,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 02:16:56,896 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 489 transitions. [2020-10-15 02:16:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-15 02:16:56,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:56,900 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 87, 85, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:56,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 02:16:56,900 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:56,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:56,901 INFO L82 PathProgramCache]: Analyzing trace with hash -924223142, now seen corresponding path program 25 times [2020-10-15 02:16:56,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:56,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722870397] [2020-10-15 02:16:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:02,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:02,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-15 02:17:02,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:17:02,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5338 [2020-10-15 02:17:02,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:02,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:02,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 85 [2020-10-15 02:17:02,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:17:02,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-15 02:17:02,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:02,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:02,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:02,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:02,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:02,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:02,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:07,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:07,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 02:17:07,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:07,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:17:07,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:07,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:17:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 02:17:07,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:08,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-15 02:17:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:08,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:08,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:09,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:09,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 02:17:09,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:09,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-15 02:17:09,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:09,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:17:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 02:17:09,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:09,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-15 02:17:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:10,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:10,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 02:17:10,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:17:10,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-15 02:17:10,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:10,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:17:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:17:10,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 02:17:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 15240 backedges. 4959 proven. 9918 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-10-15 02:17:10,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722870397] [2020-10-15 02:17:10,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:17:10,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-15 02:17:10,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409941641] [2020-10-15 02:17:10,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-15 02:17:10,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:17:10,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-15 02:17:10,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=688, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:17:10,225 INFO L87 Difference]: Start difference. First operand 387 states and 489 transitions. Second operand 35 states. [2020-10-15 02:17:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:17:11,572 INFO L93 Difference]: Finished difference Result 791 states and 1015 transitions. [2020-10-15 02:17:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 02:17:11,572 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 380 [2020-10-15 02:17:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:17:11,575 INFO L225 Difference]: With dead ends: 791 [2020-10-15 02:17:11,575 INFO L226 Difference]: Without dead ends: 413 [2020-10-15 02:17:11,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1492, Invalid=2668, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 02:17:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-15 02:17:11,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 399. [2020-10-15 02:17:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-15 02:17:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 504 transitions. [2020-10-15 02:17:11,595 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 504 transitions. Word has length 380 [2020-10-15 02:17:11,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:17:11,596 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 504 transitions. [2020-10-15 02:17:11,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-15 02:17:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 504 transitions. [2020-10-15 02:17:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-15 02:17:11,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:17:11,601 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 90, 88, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:17:11,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 02:17:11,601 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:17:11,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:17:11,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2017772683, now seen corresponding path program 26 times [2020-10-15 02:17:11,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:17:11,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767129262] [2020-10-15 02:17:11,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:17:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:13,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:16,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:16,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-15 02:17:16,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:17:16,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-15 02:17:16,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:16,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 82 [2020-10-15 02:17:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 02:17:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-15 02:17:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:17:16,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:17:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:16,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:17:16,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:17:16,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:17:16,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:17:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:17:16,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:17:16,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:17:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:17:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:17:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:17:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:17:16,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:17:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:17:16,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking...