/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:17:35,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:17:35,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:17:35,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:17:35,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:17:35,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:17:35,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:17:35,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:17:35,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:17:35,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:17:35,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:17:35,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:17:35,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:17:35,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:17:35,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:17:35,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:17:35,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:17:35,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:17:35,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:17:35,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:17:35,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:17:35,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:17:35,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:17:35,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:17:35,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:17:35,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:17:35,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:17:35,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:17:35,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:17:35,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:17:35,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:17:35,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:17:35,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:17:35,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:17:35,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:17:35,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:17:35,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:17:35,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:17:35,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:17:35,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:17:35,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:17:35,095 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 [2020-10-14 04:17:35,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:17:35,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:17:35,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:17:35,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:17:35,120 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:17:35,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:17:35,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:17:35,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:17:35,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:17:35,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:17:35,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:17:35,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:17:35,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:17:35,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:17:35,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:17:35,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:17:35,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:17:35,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:17:35,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:17:35,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:17:35,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:17:35,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:17:35,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:17:35,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:17:35,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:17:35,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:17:35,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:17:35,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:17:35,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:17:35,125 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:17:35,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:17:35,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:17:35,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:17:35,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:17:35,493 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:17:35,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label30.c [2020-10-14 04:17:35,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/784c63811/545a9578bd9a4e6a8e9f736c0e96a84a/FLAGa0890d91c [2020-10-14 04:17:36,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:17:36,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label30.c [2020-10-14 04:17:36,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/784c63811/545a9578bd9a4e6a8e9f736c0e96a84a/FLAGa0890d91c [2020-10-14 04:17:36,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/784c63811/545a9578bd9a4e6a8e9f736c0e96a84a [2020-10-14 04:17:36,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:17:36,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:17:36,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:17:36,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:17:36,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:17:36,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:17:36" (1/1) ... [2020-10-14 04:17:36,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313744d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:36, skipping insertion in model container [2020-10-14 04:17:36,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:17:36" (1/1) ... [2020-10-14 04:17:36,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:17:36,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:17:38,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:17:38,100 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:17:38,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:17:38,621 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:17:38,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:38 WrapperNode [2020-10-14 04:17:38,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:17:38,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:17:38,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:17:38,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:17:38,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:38" (1/1) ... [2020-10-14 04:17:38,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:38" (1/1) ... [2020-10-14 04:17:38,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:38" (1/1) ... [2020-10-14 04:17:38,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:38" (1/1) ... [2020-10-14 04:17:38,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:38" (1/1) ... [2020-10-14 04:17:38,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:38" (1/1) ... [2020-10-14 04:17:38,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:38" (1/1) ... [2020-10-14 04:17:38,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:17:38,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:17:38,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:17:38,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:17:38,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:38" (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 [2020-10-14 04:17:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:17:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:17:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:17:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:17:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:17:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:17:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:17:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:17:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:17:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:17:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:17:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:17:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:17:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:17:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:17:45,178 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:17:45,179 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:17:45,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:17:45 BoogieIcfgContainer [2020-10-14 04:17:45,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:17:45,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:17:45,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:17:45,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:17:45,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:17:36" (1/3) ... [2020-10-14 04:17:45,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49557895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:17:45, skipping insertion in model container [2020-10-14 04:17:45,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:38" (2/3) ... [2020-10-14 04:17:45,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49557895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:17:45, skipping insertion in model container [2020-10-14 04:17:45,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:17:45" (3/3) ... [2020-10-14 04:17:45,282 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label30.c [2020-10-14 04:17:45,293 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:17:45,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:17:45,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:17:45,350 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:17:45,351 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:17:45,351 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:17:45,351 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:17:45,351 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:17:45,351 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:17:45,352 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:17:45,352 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:17:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:17:45,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 04:17:45,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:45,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:17:45,405 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:45,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:45,412 INFO L82 PathProgramCache]: Analyzing trace with hash 2051864770, now seen corresponding path program 1 times [2020-10-14 04:17:45,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:45,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155331233] [2020-10-14 04:17:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:45,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:45,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 04:17:45,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 04:17:45,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:45,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:17:45,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:17:45,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 04:17:45,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:17:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:46,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:46,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:46,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:46,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 04:17:46,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:46,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:17:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:17:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:17:46,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155331233] [2020-10-14 04:17:46,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:17:46,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:17:46,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141473059] [2020-10-14 04:17:46,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:17:46,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:46,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:17:46,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:17:46,200 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:17:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:53,644 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:17:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:17:53,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-14 04:17:53,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:53,675 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:17:53,676 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:17:53,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:17:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:17:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:17:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:17:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-14 04:17:53,827 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 49 [2020-10-14 04:17:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:53,828 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-14 04:17:53,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:17:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-14 04:17:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 04:17:53,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:53,834 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:17:53,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:17:53,835 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:53,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:53,835 INFO L82 PathProgramCache]: Analyzing trace with hash -415835706, now seen corresponding path program 1 times [2020-10-14 04:17:53,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:53,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072643368] [2020-10-14 04:17:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:54,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:54,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 04:17:54,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:17:54,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-14 04:17:54,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:54,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:17:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:17:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:17:54,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:54,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:54,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:54,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:54,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:17:54,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:54,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:54,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:54,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:54,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:54,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:54,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:54,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:17:54,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:54,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 04:17:54,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:54,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:54,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:54,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:17:54,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:17:54,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072643368] [2020-10-14 04:17:54,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:54,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:17:54,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165519616] [2020-10-14 04:17:54,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:17:54,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:54,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:17:54,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:17:54,960 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-14 04:18:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:07,490 INFO L93 Difference]: Finished difference Result 4276 states and 6734 transitions. [2020-10-14 04:18:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:18:07,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-14 04:18:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:07,509 INFO L225 Difference]: With dead ends: 4276 [2020-10-14 04:18:07,509 INFO L226 Difference]: Without dead ends: 2857 [2020-10-14 04:18:07,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:18:07,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-14 04:18:07,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-14 04:18:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-14 04:18:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4026 transitions. [2020-10-14 04:18:07,601 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4026 transitions. Word has length 119 [2020-10-14 04:18:07,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:07,603 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4026 transitions. [2020-10-14 04:18:07,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:18:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4026 transitions. [2020-10-14 04:18:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 04:18:07,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:07,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:07,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:18:07,608 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:07,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1198602994, now seen corresponding path program 1 times [2020-10-14 04:18:07,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:07,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462059052] [2020-10-14 04:18:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:08,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:08,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:18:08,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:18:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-10-14 04:18:08,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:08,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:18:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:18:08,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:08,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:08,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:08,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:18:08,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:08,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:08,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:08,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:08,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:08,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:18:08,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 04:18:08,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:08,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:18:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:18:08,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462059052] [2020-10-14 04:18:08,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:08,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:18:08,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101190820] [2020-10-14 04:18:08,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:18:08,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:08,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:18:08,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:18:08,725 INFO L87 Difference]: Start difference. First operand 2853 states and 4026 transitions. Second operand 5 states. [2020-10-14 04:18:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:16,624 INFO L93 Difference]: Finished difference Result 7127 states and 10447 transitions. [2020-10-14 04:18:16,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:18:16,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-14 04:18:16,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:16,652 INFO L225 Difference]: With dead ends: 7127 [2020-10-14 04:18:16,652 INFO L226 Difference]: Without dead ends: 4280 [2020-10-14 04:18:16,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:18:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2020-10-14 04:18:16,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4276. [2020-10-14 04:18:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4276 states. [2020-10-14 04:18:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 5685 transitions. [2020-10-14 04:18:16,792 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 5685 transitions. Word has length 123 [2020-10-14 04:18:16,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:16,793 INFO L479 AbstractCegarLoop]: Abstraction has 4276 states and 5685 transitions. [2020-10-14 04:18:16,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:18:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 5685 transitions. [2020-10-14 04:18:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 04:18:16,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:16,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:16,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:18:16,808 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:16,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1796650870, now seen corresponding path program 1 times [2020-10-14 04:18:16,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:16,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648980782] [2020-10-14 04:18:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:16,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:16,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:17,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:17,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 04:18:17,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:18:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-14 04:18:17,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:17,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:18:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:18:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:18,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:18,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:18,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:18:18,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:18,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:18,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:18,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:18:18,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 04:18:18,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:18,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:18,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:18:18,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:18:18,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648980782] [2020-10-14 04:18:18,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:18,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:18:18,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996178419] [2020-10-14 04:18:18,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:18:18,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:18,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:18:18,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:18:18,169 INFO L87 Difference]: Start difference. First operand 4276 states and 5685 transitions. Second operand 5 states. [2020-10-14 04:18:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:30,787 INFO L93 Difference]: Finished difference Result 10688 states and 14598 transitions. [2020-10-14 04:18:30,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:18:30,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 04:18:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:30,834 INFO L225 Difference]: With dead ends: 10688 [2020-10-14 04:18:30,834 INFO L226 Difference]: Without dead ends: 6418 [2020-10-14 04:18:30,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:18:30,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2020-10-14 04:18:30,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6406. [2020-10-14 04:18:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6406 states. [2020-10-14 04:18:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6406 states to 6406 states and 8304 transitions. [2020-10-14 04:18:31,010 INFO L78 Accepts]: Start accepts. Automaton has 6406 states and 8304 transitions. Word has length 137 [2020-10-14 04:18:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:31,011 INFO L479 AbstractCegarLoop]: Abstraction has 6406 states and 8304 transitions. [2020-10-14 04:18:31,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:18:31,011 INFO L276 IsEmpty]: Start isEmpty. Operand 6406 states and 8304 transitions. [2020-10-14 04:18:31,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 04:18:31,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:31,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:31,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:18:31,014 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:31,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:31,014 INFO L82 PathProgramCache]: Analyzing trace with hash -2026982866, now seen corresponding path program 1 times [2020-10-14 04:18:31,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:31,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180511757] [2020-10-14 04:18:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:31,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:31,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:31,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:31,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 04:18:31,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:18:31,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-14 04:18:31,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:31,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:18:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:18:31,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:31,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:31,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:31,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:31,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:31,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:18:31,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:31,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:31,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:31,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:31,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:18:31,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:31,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 04:18:31,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:31,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:31,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:18:31,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:18:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:18:31,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180511757] [2020-10-14 04:18:31,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:31,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:18:31,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695781621] [2020-10-14 04:18:31,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:18:31,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:31,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:18:31,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:18:31,868 INFO L87 Difference]: Start difference. First operand 6406 states and 8304 transitions. Second operand 5 states. [2020-10-14 04:18:40,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:40,779 INFO L93 Difference]: Finished difference Result 14945 states and 20109 transitions. [2020-10-14 04:18:40,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:18:40,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 04:18:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:40,815 INFO L225 Difference]: With dead ends: 14945 [2020-10-14 04:18:40,815 INFO L226 Difference]: Without dead ends: 8545 [2020-10-14 04:18:40,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:18:40,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8545 states. [2020-10-14 04:18:41,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8545 to 8533. [2020-10-14 04:18:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8533 states. [2020-10-14 04:18:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10763 transitions. [2020-10-14 04:18:41,024 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10763 transitions. Word has length 139 [2020-10-14 04:18:41,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:41,024 INFO L479 AbstractCegarLoop]: Abstraction has 8533 states and 10763 transitions. [2020-10-14 04:18:41,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:18:41,025 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10763 transitions. [2020-10-14 04:18:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 04:18:41,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:41,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:41,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:18:41,030 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:41,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:41,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1135883426, now seen corresponding path program 1 times [2020-10-14 04:18:41,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:41,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790943556] [2020-10-14 04:18:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:42,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:42,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 04:18:42,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:18:42,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-14 04:18:42,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:42,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-14 04:18:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:18:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:42,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:42,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:42,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:42,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:18:42,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:42,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:42,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:42,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:42,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:42,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:42,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:18:42,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 04:18:42,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:42,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 04:18:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:18:42,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790943556] [2020-10-14 04:18:42,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:42,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:18:42,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958695424] [2020-10-14 04:18:42,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:18:42,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:42,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:18:42,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:18:42,462 INFO L87 Difference]: Start difference. First operand 8533 states and 10763 transitions. Second operand 6 states. [2020-10-14 04:18:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:58,722 INFO L93 Difference]: Finished difference Result 31953 states and 41501 transitions. [2020-10-14 04:18:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:18:58,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-10-14 04:18:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:58,828 INFO L225 Difference]: With dead ends: 31953 [2020-10-14 04:18:58,828 INFO L226 Difference]: Without dead ends: 23426 [2020-10-14 04:18:58,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:18:58,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23426 states. [2020-10-14 04:18:59,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23426 to 21312. [2020-10-14 04:18:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21312 states. [2020-10-14 04:18:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21312 states to 21312 states and 26384 transitions. [2020-10-14 04:18:59,624 INFO L78 Accepts]: Start accepts. Automaton has 21312 states and 26384 transitions. Word has length 181 [2020-10-14 04:18:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:59,625 INFO L479 AbstractCegarLoop]: Abstraction has 21312 states and 26384 transitions. [2020-10-14 04:18:59,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:18:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 21312 states and 26384 transitions. [2020-10-14 04:18:59,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 04:18:59,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:59,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:59,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:18:59,635 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:59,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:59,636 INFO L82 PathProgramCache]: Analyzing trace with hash 2147089254, now seen corresponding path program 1 times [2020-10-14 04:18:59,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:59,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228114637] [2020-10-14 04:18:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:01,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:01,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 04:19:01,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:19:01,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-14 04:19:01,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:01,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 04:19:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:19:01,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:01,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:01,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:01,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:01,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:01,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:19:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:01,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:01,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:01,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:01,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:01,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:01,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:01,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:19:01,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 04:19:01,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:01,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:01,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 04:19:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:01,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228114637] [2020-10-14 04:19:01,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:01,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:19:01,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557191684] [2020-10-14 04:19:01,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:19:01,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:01,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:19:01,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:01,471 INFO L87 Difference]: Start difference. First operand 21312 states and 26384 transitions. Second operand 5 states. [2020-10-14 04:19:12,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:12,483 INFO L93 Difference]: Finished difference Result 49719 states and 63112 transitions. [2020-10-14 04:19:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:12,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-14 04:19:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:12,565 INFO L225 Difference]: With dead ends: 49719 [2020-10-14 04:19:12,566 INFO L226 Difference]: Without dead ends: 28413 [2020-10-14 04:19:12,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:19:12,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28413 states. [2020-10-14 04:19:13,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28413 to 28405. [2020-10-14 04:19:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28405 states. [2020-10-14 04:19:13,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28405 states to 28405 states and 35022 transitions. [2020-10-14 04:19:13,140 INFO L78 Accepts]: Start accepts. Automaton has 28405 states and 35022 transitions. Word has length 199 [2020-10-14 04:19:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:13,141 INFO L479 AbstractCegarLoop]: Abstraction has 28405 states and 35022 transitions. [2020-10-14 04:19:13,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:19:13,141 INFO L276 IsEmpty]: Start isEmpty. Operand 28405 states and 35022 transitions. [2020-10-14 04:19:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-14 04:19:13,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:13,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:19:13,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:19:13,180 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:13,181 INFO L82 PathProgramCache]: Analyzing trace with hash -407183219, now seen corresponding path program 1 times [2020-10-14 04:19:13,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:13,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20763568] [2020-10-14 04:19:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:13,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:13,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:15,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:16,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:16,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-14 04:19:16,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:19:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3654 [2020-10-14 04:19:16,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:16,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-14 04:19:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 04:19:16,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:17,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:17,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:17,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:17,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:17,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:19:17,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:17,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:17,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:17,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:17,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-14 04:19:17,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-14 04:19:17,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:17,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 385 [2020-10-14 04:19:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:17,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:19:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:17,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:17,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 04:19:17,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:17,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 04:19:17,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:17,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:17,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:17,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 04:19:17,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:19:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:19:18,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20763568] [2020-10-14 04:19:18,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:18,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:19:18,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246012163] [2020-10-14 04:19:18,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:19:18,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:18,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:19:18,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:19:18,339 INFO L87 Difference]: Start difference. First operand 28405 states and 35022 transitions. Second operand 5 states. [2020-10-14 04:19:31,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:31,667 INFO L93 Difference]: Finished difference Result 74492 states and 93685 transitions. [2020-10-14 04:19:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:19:31,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 440 [2020-10-14 04:19:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:31,846 INFO L225 Difference]: With dead ends: 74492 [2020-10-14 04:19:31,847 INFO L226 Difference]: Without dead ends: 46093 [2020-10-14 04:19:31,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:19:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46093 states. [2020-10-14 04:19:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46093 to 46085. [2020-10-14 04:19:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46085 states. [2020-10-14 04:19:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46085 states to 46085 states and 55011 transitions. [2020-10-14 04:19:32,824 INFO L78 Accepts]: Start accepts. Automaton has 46085 states and 55011 transitions. Word has length 440 [2020-10-14 04:19:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:32,825 INFO L479 AbstractCegarLoop]: Abstraction has 46085 states and 55011 transitions. [2020-10-14 04:19:32,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:19:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 46085 states and 55011 transitions. [2020-10-14 04:19:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-14 04:19:32,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:32,898 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:19:32,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:19:32,899 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash -971134107, now seen corresponding path program 1 times [2020-10-14 04:19:32,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:32,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475232689] [2020-10-14 04:19:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:33,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:33,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:38,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:38,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-14 04:19:38,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:19:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 04:19:38,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:38,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:19:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:19:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-14 04:19:38,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:38,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:38,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:38,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:38,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:19:38,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:38,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:38,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:38,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:38,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:38,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:19:38,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:38,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:19:38,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:38,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:19:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 04:19:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:38,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:38,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:38,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 04:19:38,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-10-14 04:19:38,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:38,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:19:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:19:38,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 348 [2020-10-14 04:19:38,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:39,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:19:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:39,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:39,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:39,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:19:39,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 04:19:39,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:39,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:19:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:19:39,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 04:19:39,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:39,523 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:19:39,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475232689] [2020-10-14 04:19:39,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:39,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:19:39,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821624241] [2020-10-14 04:19:39,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:19:39,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:39,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:19:39,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:19:39,527 INFO L87 Difference]: Start difference. First operand 46085 states and 55011 transitions. Second operand 7 states. [2020-10-14 04:19:53,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:53,867 INFO L93 Difference]: Finished difference Result 95903 states and 115681 transitions. [2020-10-14 04:19:53,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:19:53,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 464 [2020-10-14 04:19:53,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:53,996 INFO L225 Difference]: With dead ends: 95903 [2020-10-14 04:19:53,996 INFO L226 Difference]: Without dead ends: 46978 [2020-10-14 04:19:54,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:19:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46978 states. [2020-10-14 04:19:54,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46978 to 46926. [2020-10-14 04:19:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46926 states. [2020-10-14 04:19:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46926 states to 46926 states and 51100 transitions. [2020-10-14 04:19:55,018 INFO L78 Accepts]: Start accepts. Automaton has 46926 states and 51100 transitions. Word has length 464 [2020-10-14 04:19:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:55,018 INFO L479 AbstractCegarLoop]: Abstraction has 46926 states and 51100 transitions. [2020-10-14 04:19:55,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:19:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 46926 states and 51100 transitions. [2020-10-14 04:19:55,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-14 04:19:55,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:55,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:19:55,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:19:55,078 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:55,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1361642941, now seen corresponding path program 1 times [2020-10-14 04:19:55,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:55,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342035793] [2020-10-14 04:19:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:55,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:56,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:57,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:00,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:00,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-14 04:20:00,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:20:00,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5145 [2020-10-14 04:20:00,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:00,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 478 [2020-10-14 04:20:00,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 04:20:00,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:00,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:00,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:00,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:00,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:00,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:00,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:00,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:00,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:00,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:00,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:00,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:20:00,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:00,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:20:00,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:00,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:00,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:20:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:00,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:01,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:01,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-14 04:20:01,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:01,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-14 04:20:01,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:01,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:01,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:01,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:01,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 339 [2020-10-14 04:20:01,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:01,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:20:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:01,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:01,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:01,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:20:01,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:01,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 04:20:01,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:01,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 04:20:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-14 04:20:01,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342035793] [2020-10-14 04:20:01,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:01,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:01,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461268458] [2020-10-14 04:20:01,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:01,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:01,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:01,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:01,692 INFO L87 Difference]: Start difference. First operand 46926 states and 51100 transitions. Second operand 5 states. [2020-10-14 04:20:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:12,242 INFO L93 Difference]: Finished difference Result 102363 states and 112733 transitions. [2020-10-14 04:20:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:12,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 516 [2020-10-14 04:20:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:12,370 INFO L225 Difference]: With dead ends: 102363 [2020-10-14 04:20:12,371 INFO L226 Difference]: Without dead ends: 52615 [2020-10-14 04:20:12,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:12,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52615 states. [2020-10-14 04:20:13,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52615 to 51901. [2020-10-14 04:20:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51901 states. [2020-10-14 04:20:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51901 states to 51901 states and 56063 transitions. [2020-10-14 04:20:13,058 INFO L78 Accepts]: Start accepts. Automaton has 51901 states and 56063 transitions. Word has length 516 [2020-10-14 04:20:13,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:13,059 INFO L479 AbstractCegarLoop]: Abstraction has 51901 states and 56063 transitions. [2020-10-14 04:20:13,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:13,060 INFO L276 IsEmpty]: Start isEmpty. Operand 51901 states and 56063 transitions. [2020-10-14 04:20:13,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-10-14 04:20:13,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:13,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:13,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:20:13,101 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:13,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:13,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1216888451, now seen corresponding path program 1 times [2020-10-14 04:20:13,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:13,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262661723] [2020-10-14 04:20:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:15,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:16,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:18,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:18,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-14 04:20:18,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:20:18,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-14 04:20:18,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:18,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:18,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:18,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 549 [2020-10-14 04:20:18,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 04:20:18,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:18,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:18,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:18,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:18,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:18,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:20:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:18,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:18,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:18,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:18,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:18,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:18,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:20:18,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:18,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:20:18,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:18,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:18,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:18,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:18,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:20:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:18,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:18,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-14 04:20:18,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:18,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-14 04:20:18,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:18,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:18,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:18,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:18,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-14 04:20:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:20,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:20:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:20,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:20,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 04:20:20,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:20,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 04:20:20,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:20,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 04:20:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-14 04:20:20,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262661723] [2020-10-14 04:20:20,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:20,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:20,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672596704] [2020-10-14 04:20:20,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:20,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:20,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:20,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:20,566 INFO L87 Difference]: Start difference. First operand 51901 states and 56063 transitions. Second operand 5 states. [2020-10-14 04:20:31,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:31,230 INFO L93 Difference]: Finished difference Result 131404 states and 143665 transitions. [2020-10-14 04:20:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:20:31,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 587 [2020-10-14 04:20:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:31,472 INFO L225 Difference]: With dead ends: 131404 [2020-10-14 04:20:31,472 INFO L226 Difference]: Without dead ends: 79509 [2020-10-14 04:20:31,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:20:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79509 states. [2020-10-14 04:20:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79509 to 79497. [2020-10-14 04:20:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79497 states. [2020-10-14 04:20:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79497 states to 79497 states and 86226 transitions. [2020-10-14 04:20:32,748 INFO L78 Accepts]: Start accepts. Automaton has 79497 states and 86226 transitions. Word has length 587 [2020-10-14 04:20:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:32,750 INFO L479 AbstractCegarLoop]: Abstraction has 79497 states and 86226 transitions. [2020-10-14 04:20:32,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:20:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 79497 states and 86226 transitions. [2020-10-14 04:20:32,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2020-10-14 04:20:32,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:32,804 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:32,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:20:32,805 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:32,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1531733986, now seen corresponding path program 1 times [2020-10-14 04:20:32,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:32,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456008815] [2020-10-14 04:20:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:33,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:34,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:35,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:37,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:37,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 682 [2020-10-14 04:20:37,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:20:37,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 04:20:37,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:37,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 04:20:37,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:20:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:38,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:38,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:38,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:38,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:38,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:38,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:38,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:38,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:38,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:38,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:38,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 04:20:38,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:20:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:38,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 04:20:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:38,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-14 04:20:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:38,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:38,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:20:38,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:20:38,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:38,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 04:20:38,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:38,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 04:20:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:38,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:38,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-14 04:20:38,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 04:20:38,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:38,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 404 [2020-10-14 04:20:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:20:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:38,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:38,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 04:20:38,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:20:38,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:38,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 198 proven. 70 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-14 04:20:39,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456008815] [2020-10-14 04:20:39,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:39,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:39,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911889452] [2020-10-14 04:20:39,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:39,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:39,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:39,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:39,003 INFO L87 Difference]: Start difference. First operand 79497 states and 86226 transitions. Second operand 7 states. [2020-10-14 04:20:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:55,963 INFO L93 Difference]: Finished difference Result 168905 states and 186288 transitions. [2020-10-14 04:20:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:20:55,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 666 [2020-10-14 04:20:55,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:56,188 INFO L225 Difference]: With dead ends: 168905 [2020-10-14 04:20:56,188 INFO L226 Difference]: Without dead ends: 89414 [2020-10-14 04:20:56,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:20:56,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89414 states. [2020-10-14 04:20:57,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89414 to 88904. [2020-10-14 04:20:57,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88904 states. [2020-10-14 04:20:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88904 states to 88904 states and 96241 transitions. [2020-10-14 04:20:57,343 INFO L78 Accepts]: Start accepts. Automaton has 88904 states and 96241 transitions. Word has length 666 [2020-10-14 04:20:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:57,343 INFO L479 AbstractCegarLoop]: Abstraction has 88904 states and 96241 transitions. [2020-10-14 04:20:57,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 88904 states and 96241 transitions. [2020-10-14 04:20:57,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2020-10-14 04:20:57,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:57,396 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:57,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:20:57,397 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:57,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:57,397 INFO L82 PathProgramCache]: Analyzing trace with hash 994758653, now seen corresponding path program 1 times [2020-10-14 04:20:57,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:57,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553065773] [2020-10-14 04:20:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:01,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:02,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:02,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:02,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 763 [2020-10-14 04:21:02,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:21:02,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 04:21:02,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:02,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:21:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 04:21:02,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:02,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:02,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:02,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:02,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:02,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:02,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:02,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:02,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:02,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:02,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:02,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:02,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:02,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:02,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:02,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:21:02,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:02,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:21:02,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:02,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:21:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:02,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:21:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:02,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:02,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:02,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 04:21:02,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 04:21:02,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:02,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 04:21:02,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:02,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-14 04:21:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:02,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:02,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:02,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:21:02,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:21:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:02,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 04:21:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:02,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-14 04:21:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:02,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:03,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:03,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-14 04:21:03,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:03,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 04:21:03,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:03,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 404 [2020-10-14 04:21:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:03,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:03,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:21:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:03,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:03,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 04:21:03,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:21:03,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:03,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:03,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:21:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 272 proven. 166 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-14 04:21:03,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553065773] [2020-10-14 04:21:03,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:03,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:03,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67868674] [2020-10-14 04:21:03,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:03,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:03,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:03,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:03,373 INFO L87 Difference]: Start difference. First operand 88904 states and 96241 transitions. Second operand 7 states. [2020-10-14 04:21:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:14,357 INFO L93 Difference]: Finished difference Result 177169 states and 191961 transitions. [2020-10-14 04:21:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:21:14,358 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 745 [2020-10-14 04:21:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:14,511 INFO L225 Difference]: With dead ends: 177169 [2020-10-14 04:21:14,512 INFO L226 Difference]: Without dead ends: 88979 [2020-10-14 04:21:14,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:21:14,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88979 states. [2020-10-14 04:21:15,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88979 to 88911. [2020-10-14 04:21:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88911 states. [2020-10-14 04:21:15,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88911 states to 88911 states and 94425 transitions. [2020-10-14 04:21:15,460 INFO L78 Accepts]: Start accepts. Automaton has 88911 states and 94425 transitions. Word has length 745 [2020-10-14 04:21:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:15,461 INFO L479 AbstractCegarLoop]: Abstraction has 88911 states and 94425 transitions. [2020-10-14 04:21:15,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:21:15,461 INFO L276 IsEmpty]: Start isEmpty. Operand 88911 states and 94425 transitions.