/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:12:12,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:12:12,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:12:12,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:12:12,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:12:12,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:12:12,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:12:12,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:12:12,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:12:12,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:12:12,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:12:12,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:12:12,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:12:12,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:12:12,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:12:12,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:12:12,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:12:12,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:12:12,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:12:12,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:12:12,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:12:12,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:12:12,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:12:12,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:12:12,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:12:12,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:12:12,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:12:12,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:12:12,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:12:12,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:12:12,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:12:12,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:12:12,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:12:12,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:12:12,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:12:12,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:12:12,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:12:12,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:12:12,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:12:12,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:12:12,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:12:12,868 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 22:12:12,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:12:12,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:12:12,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:12:12,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:12:12,919 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:12:12,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:12:12,919 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:12:12,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:12:12,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:12:12,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:12:12,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:12:12,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:12:12,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:12:12,920 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:12:12,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:12:12,921 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:12:12,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:12:12,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:12:12,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:12:12,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:12:12,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:12:12,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:12:12,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:12:12,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:12:12,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:12:12,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:12:12,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:12:12,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:12:12,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:12:12,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:12:13,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:12:13,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:12:13,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:12:13,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:12:13,239 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:12:13,239 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17.c [2020-10-14 22:12:13,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83343da16/8659a9bb25e04e038701b2408ec756f6/FLAG2f078614a [2020-10-14 22:12:13,936 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:12:13,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label17.c [2020-10-14 22:12:13,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83343da16/8659a9bb25e04e038701b2408ec756f6/FLAG2f078614a [2020-10-14 22:12:14,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83343da16/8659a9bb25e04e038701b2408ec756f6 [2020-10-14 22:12:14,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:12:14,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:12:14,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:12:14,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:12:14,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:12:14,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:12:14" (1/1) ... [2020-10-14 22:12:14,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:14, skipping insertion in model container [2020-10-14 22:12:14,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:12:14" (1/1) ... [2020-10-14 22:12:14,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:12:14,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:12:15,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:12:15,114 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:12:15,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:12:15,421 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:12:15,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:15 WrapperNode [2020-10-14 22:12:15,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:12:15,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:12:15,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:12:15,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:12:15,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:15" (1/1) ... [2020-10-14 22:12:15,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:15" (1/1) ... [2020-10-14 22:12:15,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:15" (1/1) ... [2020-10-14 22:12:15,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:15" (1/1) ... [2020-10-14 22:12:15,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:15" (1/1) ... [2020-10-14 22:12:15,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:15" (1/1) ... [2020-10-14 22:12:15,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:15" (1/1) ... [2020-10-14 22:12:15,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:12:15,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:12:15,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:12:15,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:12:15,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:15" (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 22:12:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:12:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:12:15,716 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:12:15,716 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:12:15,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:12:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:12:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:12:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:12:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:12:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:12:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:12:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:12:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:12:17,974 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:12:17,975 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:12:17,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:12:17 BoogieIcfgContainer [2020-10-14 22:12:17,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:12:17,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:12:17,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:12:17,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:12:17,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:12:14" (1/3) ... [2020-10-14 22:12:17,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b8227a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:12:17, skipping insertion in model container [2020-10-14 22:12:17,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:12:15" (2/3) ... [2020-10-14 22:12:17,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b8227a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:12:17, skipping insertion in model container [2020-10-14 22:12:17,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:12:17" (3/3) ... [2020-10-14 22:12:17,991 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label17.c [2020-10-14 22:12:18,002 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:12:18,010 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:12:18,025 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:12:18,052 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:12:18,052 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:12:18,052 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:12:18,052 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:12:18,053 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:12:18,053 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:12:18,053 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:12:18,053 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:12:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-14 22:12:18,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 22:12:18,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:12:18,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:12:18,090 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:12:18,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:12:18,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1802126811, now seen corresponding path program 1 times [2020-10-14 22:12:18,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:12:18,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170870034] [2020-10-14 22:12:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:12:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:18,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:18,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:18,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:12:18,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:18,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-14 22:12:18,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:18,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:12:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:12:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 22:12:18,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:12:18,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:12:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:18,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:18,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:12:18,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:18,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:12:18,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:18,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:12:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:12:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:12:18,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:18,833 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 22:12:18,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170870034] [2020-10-14 22:12:18,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:12:18,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 22:12:18,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792348125] [2020-10-14 22:12:18,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:12:18,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:12:18,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:12:18,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:12:18,863 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2020-10-14 22:12:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:12:24,437 INFO L93 Difference]: Finished difference Result 1515 states and 2849 transitions. [2020-10-14 22:12:24,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:12:24,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-14 22:12:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:12:24,465 INFO L225 Difference]: With dead ends: 1515 [2020-10-14 22:12:24,466 INFO L226 Difference]: Without dead ends: 1038 [2020-10-14 22:12:24,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:12:24,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-14 22:12:24,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1034. [2020-10-14 22:12:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-10-14 22:12:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1485 transitions. [2020-10-14 22:12:24,599 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1485 transitions. Word has length 64 [2020-10-14 22:12:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:12:24,600 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1485 transitions. [2020-10-14 22:12:24,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:12:24,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1485 transitions. [2020-10-14 22:12:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 22:12:24,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:12:24,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 22:12:24,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:12:24,608 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:12:24,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:12:24,609 INFO L82 PathProgramCache]: Analyzing trace with hash -929496232, now seen corresponding path program 1 times [2020-10-14 22:12:24,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:12:24,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599091718] [2020-10-14 22:12:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:12:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:25,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:25,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:12:25,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:12:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-14 22:12:25,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:25,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:12:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:12:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:12:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:12:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:12:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:25,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:25,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:25,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:12:25,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:12:25,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:25,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:12:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:12:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:12:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:12:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:25,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:25,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:12:25,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:25,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 22:12:25,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:25,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:12:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:12:25,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:12:25,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:12:26,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599091718] [2020-10-14 22:12:26,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:12:26,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:12:26,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725181046] [2020-10-14 22:12:26,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:12:26,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:12:26,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:12:26,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:12:26,056 INFO L87 Difference]: Start difference. First operand 1034 states and 1485 transitions. Second operand 7 states. [2020-10-14 22:12:30,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:12:30,092 INFO L93 Difference]: Finished difference Result 3109 states and 4513 transitions. [2020-10-14 22:12:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:12:30,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-14 22:12:30,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:12:30,106 INFO L225 Difference]: With dead ends: 3109 [2020-10-14 22:12:30,106 INFO L226 Difference]: Without dead ends: 2081 [2020-10-14 22:12:30,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:12:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2020-10-14 22:12:30,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2075. [2020-10-14 22:12:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2075 states. [2020-10-14 22:12:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2687 transitions. [2020-10-14 22:12:30,203 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2687 transitions. Word has length 140 [2020-10-14 22:12:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:12:30,204 INFO L479 AbstractCegarLoop]: Abstraction has 2075 states and 2687 transitions. [2020-10-14 22:12:30,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:12:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2687 transitions. [2020-10-14 22:12:30,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 22:12:30,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:12:30,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:12:30,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:12:30,214 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:12:30,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:12:30,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1679225768, now seen corresponding path program 1 times [2020-10-14 22:12:30,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:12:30,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099327797] [2020-10-14 22:12:30,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:12:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:30,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:30,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:31,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:32,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:34,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:34,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 22:12:34,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:12:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4642 [2020-10-14 22:12:34,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:34,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:12:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:12:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 233 [2020-10-14 22:12:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:35,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:12:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:35,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:35,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:35,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:12:35,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:12:35,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:35,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:35,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:12:35,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:12:35,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:12:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:35,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:12:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:35,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:35,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:35,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:35,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:12:35,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:12:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 22:12:35,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:35,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:12:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:12:35,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:12:35,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:35,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 22:12:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:35,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:35,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:35,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:12:35,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:12:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 22:12:35,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:35,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:12:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:12:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 22:12:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 106 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 22:12:35,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099327797] [2020-10-14 22:12:35,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:12:35,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:12:35,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740485156] [2020-10-14 22:12:35,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:12:35,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:12:35,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:12:35,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:12:35,733 INFO L87 Difference]: Start difference. First operand 2075 states and 2687 transitions. Second operand 7 states. [2020-10-14 22:12:42,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:12:42,560 INFO L93 Difference]: Finished difference Result 6549 states and 8882 transitions. [2020-10-14 22:12:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:12:42,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-14 22:12:42,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:12:42,587 INFO L225 Difference]: With dead ends: 6549 [2020-10-14 22:12:42,587 INFO L226 Difference]: Without dead ends: 4480 [2020-10-14 22:12:42,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:12:42,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2020-10-14 22:12:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 3458. [2020-10-14 22:12:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3458 states. [2020-10-14 22:12:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4632 transitions. [2020-10-14 22:12:42,729 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4632 transitions. Word has length 227 [2020-10-14 22:12:42,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:12:42,731 INFO L479 AbstractCegarLoop]: Abstraction has 3458 states and 4632 transitions. [2020-10-14 22:12:42,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:12:42,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4632 transitions. [2020-10-14 22:12:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-14 22:12:42,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:12:42,753 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:12:42,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:12:42,753 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:12:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:12:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash -429357803, now seen corresponding path program 1 times [2020-10-14 22:12:42,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:12:42,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56843001] [2020-10-14 22:12:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:12:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:43,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:44,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:47,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:47,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-14 22:12:47,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:12:47,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4296 [2020-10-14 22:12:47,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:47,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:12:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 22:12:47,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-14 22:12:47,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:47,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:12:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:47,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:47,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:12:47,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:12:47,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:47,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:12:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:12:47,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:12:47,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:12:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:47,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:47,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:12:47,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:47,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 22:12:47,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:47,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:12:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:12:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:12:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 22:12:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:47,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:47,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 22:12:47,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:12:47,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-14 22:12:47,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:47,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:47,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:12:47,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:12:47,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 22:12:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:47,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-14 22:12:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:47,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:48,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:48,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:12:48,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 22:12:48,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:48,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:12:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:12:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:12:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 347 proven. 4 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-14 22:12:48,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56843001] [2020-10-14 22:12:48,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:12:48,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:12:48,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741285115] [2020-10-14 22:12:48,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:12:48,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:12:48,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:12:48,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:12:48,342 INFO L87 Difference]: Start difference. First operand 3458 states and 4632 transitions. Second operand 8 states. [2020-10-14 22:12:54,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:12:54,155 INFO L93 Difference]: Finished difference Result 7657 states and 10143 transitions. [2020-10-14 22:12:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:12:54,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 405 [2020-10-14 22:12:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:12:54,180 INFO L225 Difference]: With dead ends: 7657 [2020-10-14 22:12:54,180 INFO L226 Difference]: Without dead ends: 3838 [2020-10-14 22:12:54,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:12:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2020-10-14 22:12:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 3468. [2020-10-14 22:12:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3468 states. [2020-10-14 22:12:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 3800 transitions. [2020-10-14 22:12:54,291 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 3800 transitions. Word has length 405 [2020-10-14 22:12:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:12:54,292 INFO L479 AbstractCegarLoop]: Abstraction has 3468 states and 3800 transitions. [2020-10-14 22:12:54,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:12:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 3800 transitions. [2020-10-14 22:12:54,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-14 22:12:54,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:12:54,301 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:12:54,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:12:54,305 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:12:54,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:12:54,305 INFO L82 PathProgramCache]: Analyzing trace with hash -664696156, now seen corresponding path program 1 times [2020-10-14 22:12:54,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:12:54,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336848696] [2020-10-14 22:12:54,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:12:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:59,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:59,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-14 22:12:59,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:12:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 22:12:59,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:59,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:12:59,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 22:12:59,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 22:12:59,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:12:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:59,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:59,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:12:59,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:12:59,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:59,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:12:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:12:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:12:59,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:59,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:12:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:59,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:59,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:12:59,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 22:12:59,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:59,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:12:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:12:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:12:59,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:12:59,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 22:12:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:59,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:59,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:59,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:12:59,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:59,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:12:59,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:59,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:12:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:12:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 22:12:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:12:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-14 22:12:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:12:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:12:59,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:12:59,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:12:59,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:12:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:12:59,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:12:59,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:12:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:12:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 22:12:59,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:12:59,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 272 proven. 114 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 22:13:00,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336848696] [2020-10-14 22:13:00,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:13:00,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:13:00,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153556481] [2020-10-14 22:13:00,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:13:00,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:00,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:13:00,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:13:00,146 INFO L87 Difference]: Start difference. First operand 3468 states and 3800 transitions. Second operand 7 states. [2020-10-14 22:13:03,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:13:03,146 INFO L93 Difference]: Finished difference Result 10024 states and 11094 transitions. [2020-10-14 22:13:03,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:13:03,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-14 22:13:03,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:13:03,178 INFO L225 Difference]: With dead ends: 10024 [2020-10-14 22:13:03,178 INFO L226 Difference]: Without dead ends: 6562 [2020-10-14 22:13:03,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:13:03,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2020-10-14 22:13:03,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 6546. [2020-10-14 22:13:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6546 states. [2020-10-14 22:13:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6546 states to 6546 states and 7113 transitions. [2020-10-14 22:13:03,345 INFO L78 Accepts]: Start accepts. Automaton has 6546 states and 7113 transitions. Word has length 408 [2020-10-14 22:13:03,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:13:03,346 INFO L479 AbstractCegarLoop]: Abstraction has 6546 states and 7113 transitions. [2020-10-14 22:13:03,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:13:03,346 INFO L276 IsEmpty]: Start isEmpty. Operand 6546 states and 7113 transitions. [2020-10-14 22:13:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-10-14 22:13:03,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:03,360 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:03,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:13:03,360 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:03,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:03,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1416959279, now seen corresponding path program 1 times [2020-10-14 22:13:03,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:03,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672387558] [2020-10-14 22:13:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:03,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:08,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:08,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-14 22:13:08,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:13:08,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 22:13:08,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:08,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:13:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:13:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-14 22:13:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:08,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:13:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:08,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:08,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:08,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:13:08,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:08,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:13:08,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:08,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:08,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:08,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:13:08,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:08,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:13:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:08,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:09,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:09,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:13:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-14 22:13:09,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:09,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:13:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:13:09,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:09,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-14 22:13:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:09,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:09,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:13:09,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:13:09,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:09,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 22:13:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:09,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:13:09,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-14 22:13:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:09,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:09,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:09,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 22:13:09,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:09,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 22:13:09,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:09,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 22:13:09,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:09,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 171 proven. 188 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-14 22:13:09,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672387558] [2020-10-14 22:13:09,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:13:09,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:13:09,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551199743] [2020-10-14 22:13:09,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:13:09,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:09,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:13:09,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:13:09,563 INFO L87 Difference]: Start difference. First operand 6546 states and 7113 transitions. Second operand 7 states. [2020-10-14 22:13:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:13:12,266 INFO L93 Difference]: Finished difference Result 13139 states and 14311 transitions. [2020-10-14 22:13:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:13:12,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 511 [2020-10-14 22:13:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:13:12,301 INFO L225 Difference]: With dead ends: 13139 [2020-10-14 22:13:12,301 INFO L226 Difference]: Without dead ends: 6936 [2020-10-14 22:13:12,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:13:12,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6936 states. [2020-10-14 22:13:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6936 to 6567. [2020-10-14 22:13:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6567 states. [2020-10-14 22:13:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6567 states to 6567 states and 7141 transitions. [2020-10-14 22:13:12,472 INFO L78 Accepts]: Start accepts. Automaton has 6567 states and 7141 transitions. Word has length 511 [2020-10-14 22:13:12,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:13:12,473 INFO L479 AbstractCegarLoop]: Abstraction has 6567 states and 7141 transitions. [2020-10-14 22:13:12,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:13:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand 6567 states and 7141 transitions. [2020-10-14 22:13:12,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2020-10-14 22:13:12,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:12,513 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:13:12,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:13:12,513 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:12,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:12,514 INFO L82 PathProgramCache]: Analyzing trace with hash -39114175, now seen corresponding path program 1 times [2020-10-14 22:13:12,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:12,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266283751] [2020-10-14 22:13:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:12,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:13,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:16,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:17,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:17,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 774 [2020-10-14 22:13:17,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:13:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 22:13:17,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:17,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:13:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:13:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-14 22:13:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:17,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:13:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:17,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:17,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:17,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:13:17,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:13:17,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:17,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:17,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:17,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:13:17,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:17,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:13:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:17,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:17,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:18,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:18,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:13:18,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:13:18,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 22:13:18,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:18,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 22:13:18,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:18,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:13:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:18,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:18,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:18,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:13:18,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 22:13:18,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:18,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:13:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:13:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-14 22:13:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:18,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:18,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:18,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:13:18,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:18,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 22:13:18,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:18,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:18,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 22:13:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:18,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:18,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-10-14 22:13:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:18,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:18,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 22:13:18,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:18,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:13:18,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:18,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 22:13:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 477 proven. 194 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-14 22:13:19,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266283751] [2020-10-14 22:13:19,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:13:19,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:13:19,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029414366] [2020-10-14 22:13:19,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:13:19,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:19,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:13:19,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:13:19,101 INFO L87 Difference]: Start difference. First operand 6567 states and 7141 transitions. Second operand 7 states. [2020-10-14 22:13:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:13:21,854 INFO L93 Difference]: Finished difference Result 12478 states and 13621 transitions. [2020-10-14 22:13:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:13:21,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 758 [2020-10-14 22:13:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:13:21,892 INFO L225 Difference]: With dead ends: 12478 [2020-10-14 22:13:21,893 INFO L226 Difference]: Without dead ends: 6593 [2020-10-14 22:13:21,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:13:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6593 states. [2020-10-14 22:13:22,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6593 to 6571. [2020-10-14 22:13:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6571 states. [2020-10-14 22:13:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 7143 transitions. [2020-10-14 22:13:22,026 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 7143 transitions. Word has length 758 [2020-10-14 22:13:22,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:13:22,027 INFO L479 AbstractCegarLoop]: Abstraction has 6571 states and 7143 transitions. [2020-10-14 22:13:22,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:13:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 7143 transitions. [2020-10-14 22:13:22,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2020-10-14 22:13:22,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:22,041 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:13:22,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:13:22,042 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:22,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:22,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2072457526, now seen corresponding path program 1 times [2020-10-14 22:13:22,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:22,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886303167] [2020-10-14 22:13:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:22,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:24,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:24,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:27,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:27,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 844 [2020-10-14 22:13:27,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:13:27,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-14 22:13:27,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:27,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:27,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:27,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-14 22:13:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 22:13:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:13:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:27,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:27,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:13:27,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:13:27,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:27,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:27,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:13:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:27,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:27,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:27,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:13:27,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:13:27,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:27,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:27,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:27,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:13:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:27,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:27,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:13:27,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 22:13:27,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:27,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:27,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 22:13:27,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:27,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 22:13:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:27,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:27,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:27,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 22:13:27,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 22:13:27,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:27,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:13:27,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 22:13:27,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:27,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2020-10-14 22:13:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:27,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:27,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:27,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:13:27,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 22:13:27,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:27,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:27,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 22:13:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:27,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:27,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2020-10-14 22:13:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:27,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:27,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:27,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 22:13:27,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:27,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 22:13:27,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:27,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 22:13:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1449 backedges. 625 proven. 194 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2020-10-14 22:13:28,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886303167] [2020-10-14 22:13:28,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:13:28,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:13:28,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129324685] [2020-10-14 22:13:28,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:13:28,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:28,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:13:28,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:13:28,321 INFO L87 Difference]: Start difference. First operand 6571 states and 7143 transitions. Second operand 7 states. [2020-10-14 22:13:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:13:31,488 INFO L93 Difference]: Finished difference Result 13862 states and 15279 transitions. [2020-10-14 22:13:31,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:13:31,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 826 [2020-10-14 22:13:31,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:13:31,514 INFO L225 Difference]: With dead ends: 13862 [2020-10-14 22:13:31,514 INFO L226 Difference]: Without dead ends: 7973 [2020-10-14 22:13:31,527 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 22:13:31,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7973 states. [2020-10-14 22:13:31,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7973 to 7955. [2020-10-14 22:13:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7955 states. [2020-10-14 22:13:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7955 states to 7955 states and 8617 transitions. [2020-10-14 22:13:31,669 INFO L78 Accepts]: Start accepts. Automaton has 7955 states and 8617 transitions. Word has length 826 [2020-10-14 22:13:31,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:13:31,670 INFO L479 AbstractCegarLoop]: Abstraction has 7955 states and 8617 transitions. [2020-10-14 22:13:31,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:13:31,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7955 states and 8617 transitions. [2020-10-14 22:13:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-14 22:13:31,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:31,689 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:13:31,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:13:31,689 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:31,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:31,690 INFO L82 PathProgramCache]: Analyzing trace with hash -727304695, now seen corresponding path program 1 times [2020-10-14 22:13:31,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:31,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340328242] [2020-10-14 22:13:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:31,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:33,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:33,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:36,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:36,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 847 [2020-10-14 22:13:36,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:13:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 22:13:36,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:36,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 22:13:36,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 22:13:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:36,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:13:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:36,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:36,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:36,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:13:36,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:13:36,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:36,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:36,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:13:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:37,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:37,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:13:37,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:13:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:37,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:37,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:13:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:37,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:37,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:37,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:13:37,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:37,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 22:13:37,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:37,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 22:13:37,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:13:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:37,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:37,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:37,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 22:13:37,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:37,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 22:13:37,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:37,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:13:37,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 22:13:37,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:37,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-14 22:13:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:37,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:37,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:13:37,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 22:13:37,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:37,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 22:13:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:37,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2020-10-14 22:13:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:37,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:37,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 22:13:37,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:13:37,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:37,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 22:13:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 620 proven. 194 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2020-10-14 22:13:37,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340328242] [2020-10-14 22:13:37,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:13:37,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:13:37,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890626615] [2020-10-14 22:13:37,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:13:37,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:37,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:13:37,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:13:37,885 INFO L87 Difference]: Start difference. First operand 7955 states and 8617 transitions. Second operand 7 states. [2020-10-14 22:13:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:13:41,065 INFO L93 Difference]: Finished difference Result 17605 states and 19284 transitions. [2020-10-14 22:13:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:13:41,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 829 [2020-10-14 22:13:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:13:41,092 INFO L225 Difference]: With dead ends: 17605 [2020-10-14 22:13:41,092 INFO L226 Difference]: Without dead ends: 10332 [2020-10-14 22:13:41,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:13:41,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10332 states. [2020-10-14 22:13:41,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10332 to 10326. [2020-10-14 22:13:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10326 states. [2020-10-14 22:13:41,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10326 states to 10326 states and 11044 transitions. [2020-10-14 22:13:41,270 INFO L78 Accepts]: Start accepts. Automaton has 10326 states and 11044 transitions. Word has length 829 [2020-10-14 22:13:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:13:41,271 INFO L479 AbstractCegarLoop]: Abstraction has 10326 states and 11044 transitions. [2020-10-14 22:13:41,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:13:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 10326 states and 11044 transitions. [2020-10-14 22:13:41,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2020-10-14 22:13:41,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:41,298 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:41,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:13:41,298 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:41,299 INFO L82 PathProgramCache]: Analyzing trace with hash 300342744, now seen corresponding path program 1 times [2020-10-14 22:13:41,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:41,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379676554] [2020-10-14 22:13:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:41,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:42,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:46,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:46,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 944 [2020-10-14 22:13:46,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:13:46,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 22:13:46,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:46,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 616 [2020-10-14 22:13:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:13:46,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:46,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:13:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:46,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:46,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:13:46,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:46,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:13:46,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:46,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:46,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:13:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:46,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:46,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:46,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:13:46,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 22:13:46,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:46,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:46,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:13:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:46,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:46,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:46,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:13:46,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:46,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:13:46,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:46,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:46,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:46,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:47,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 22:13:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:47,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:47,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:47,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:13:47,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:47,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:13:47,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:47,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:47,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-14 22:13:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:47,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:47,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:47,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:13:47,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:47,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 22:13:47,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:47,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:47,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 22:13:47,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:47,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-14 22:13:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:47,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:47,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:47,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 22:13:47,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-14 22:13:47,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:47,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:13:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-14 22:13:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 888 proven. 2 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2020-10-14 22:13:48,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379676554] [2020-10-14 22:13:48,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:13:48,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:13:48,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394214838] [2020-10-14 22:13:48,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:13:48,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:48,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:13:48,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:13:48,165 INFO L87 Difference]: Start difference. First operand 10326 states and 11044 transitions. Second operand 7 states. [2020-10-14 22:13:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:13:51,549 INFO L93 Difference]: Finished difference Result 20997 states and 22505 transitions. [2020-10-14 22:13:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:13:51,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 926 [2020-10-14 22:13:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:13:51,592 INFO L225 Difference]: With dead ends: 20997 [2020-10-14 22:13:51,593 INFO L226 Difference]: Without dead ends: 11353 [2020-10-14 22:13:51,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:13:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11353 states. [2020-10-14 22:13:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11353 to 11341. [2020-10-14 22:13:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11341 states. [2020-10-14 22:13:51,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11341 states to 11341 states and 12096 transitions. [2020-10-14 22:13:51,800 INFO L78 Accepts]: Start accepts. Automaton has 11341 states and 12096 transitions. Word has length 926 [2020-10-14 22:13:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:13:51,801 INFO L479 AbstractCegarLoop]: Abstraction has 11341 states and 12096 transitions. [2020-10-14 22:13:51,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:13:51,801 INFO L276 IsEmpty]: Start isEmpty. Operand 11341 states and 12096 transitions. [2020-10-14 22:13:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-14 22:13:51,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:13:51,824 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:51,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:13:51,824 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:13:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:13:51,825 INFO L82 PathProgramCache]: Analyzing trace with hash 561749340, now seen corresponding path program 1 times [2020-10-14 22:13:51,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:13:51,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773065057] [2020-10-14 22:13:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:13:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:52,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:52,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:57,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:57,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-14 22:13:57,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:13:57,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 22:13:57,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:57,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:57,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 639 [2020-10-14 22:13:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:13:57,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:13:57,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:13:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:57,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:57,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:57,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:13:57,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:57,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:13:57,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:57,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:57,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:13:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:57,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:57,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:13:57,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:57,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:13:57,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:57,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:57,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:57,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:13:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:57,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:57,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:57,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:13:57,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:13:57,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:57,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:13:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:57,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:13:57,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:57,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:13:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:57,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:57,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:57,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 22:13:57,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:57,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:13:57,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:57,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:13:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:13:57,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 22:13:57,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:57,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-14 22:13:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:13:57,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:13:57,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:13:57,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 22:13:57,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:13:57,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-14 22:13:57,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:13:57,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:13:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:13:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:13:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-14 22:13:57,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:13:58,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1402 backedges. 854 proven. 2 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2020-10-14 22:13:58,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773065057] [2020-10-14 22:13:58,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:13:58,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:13:58,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863609262] [2020-10-14 22:13:58,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:13:58,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:13:58,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:13:58,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:13:58,830 INFO L87 Difference]: Start difference. First operand 11341 states and 12096 transitions. Second operand 8 states. [2020-10-14 22:14:02,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:02,737 INFO L93 Difference]: Finished difference Result 23704 states and 25565 transitions. [2020-10-14 22:14:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:14:02,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 951 [2020-10-14 22:14:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:02,767 INFO L225 Difference]: With dead ends: 23704 [2020-10-14 22:14:02,767 INFO L226 Difference]: Without dead ends: 13045 [2020-10-14 22:14:02,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:14:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13045 states. [2020-10-14 22:14:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13045 to 12700. [2020-10-14 22:14:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12700 states. [2020-10-14 22:14:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12700 states to 12700 states and 13697 transitions. [2020-10-14 22:14:02,978 INFO L78 Accepts]: Start accepts. Automaton has 12700 states and 13697 transitions. Word has length 951 [2020-10-14 22:14:02,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:02,979 INFO L479 AbstractCegarLoop]: Abstraction has 12700 states and 13697 transitions. [2020-10-14 22:14:02,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:14:02,980 INFO L276 IsEmpty]: Start isEmpty. Operand 12700 states and 13697 transitions. [2020-10-14 22:14:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2020-10-14 22:14:03,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:03,008 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:14:03,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:14:03,009 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:03,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:03,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1392287339, now seen corresponding path program 1 times [2020-10-14 22:14:03,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:03,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143902058] [2020-10-14 22:14:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:03,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:08,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:08,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1074 [2020-10-14 22:14:08,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:14:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 22:14:08,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:08,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:14:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 22:14:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 332 [2020-10-14 22:14:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:08,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:08,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:08,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:08,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:08,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:14:08,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:08,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:08,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:08,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:08,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:08,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:14:08,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:14:08,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:08,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 22:14:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:08,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:14:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:08,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:10,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:10,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-14 22:14:10,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:14:10,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1559 [2020-10-14 22:14:10,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:10,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:14:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-10-14 22:14:10,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:10,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:14:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:10,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:10,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 22:14:10,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 22:14:10,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:10,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:14:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 22:14:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:10,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2020-10-14 22:14:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:10,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:10,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:10,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 22:14:10,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:10,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 22:14:10,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:10,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:10,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:10,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 22:14:10,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:10,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:10,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2020-10-14 22:14:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:10,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:10,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:10,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:14:10,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:10,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:14:10,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:10,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:10,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:10,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-14 22:14:10,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:10,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:10,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2020-10-14 22:14:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:10,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:10,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:14:10,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:10,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:14:10,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:10,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 22:14:10,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:10,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1778 backedges. 533 proven. 414 refuted. 0 times theorem prover too weak. 831 trivial. 0 not checked. [2020-10-14 22:14:11,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143902058] [2020-10-14 22:14:11,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:11,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:11,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272403742] [2020-10-14 22:14:11,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:11,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:11,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:11,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:11,596 INFO L87 Difference]: Start difference. First operand 12700 states and 13697 transitions. Second operand 7 states. [2020-10-14 22:14:14,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:14,998 INFO L93 Difference]: Finished difference Result 25069 states and 27065 transitions. [2020-10-14 22:14:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:14:14,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1054 [2020-10-14 22:14:15,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:15,025 INFO L225 Difference]: With dead ends: 25069 [2020-10-14 22:14:15,026 INFO L226 Difference]: Without dead ends: 12712 [2020-10-14 22:14:15,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:14:15,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2020-10-14 22:14:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 12028. [2020-10-14 22:14:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12028 states. [2020-10-14 22:14:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12028 states to 12028 states and 12979 transitions. [2020-10-14 22:14:15,222 INFO L78 Accepts]: Start accepts. Automaton has 12028 states and 12979 transitions. Word has length 1054 [2020-10-14 22:14:15,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:15,223 INFO L479 AbstractCegarLoop]: Abstraction has 12028 states and 12979 transitions. [2020-10-14 22:14:15,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 12028 states and 12979 transitions. [2020-10-14 22:14:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2020-10-14 22:14:15,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:15,267 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:15,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:14:15,268 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:15,268 INFO L82 PathProgramCache]: Analyzing trace with hash -498039461, now seen corresponding path program 1 times [2020-10-14 22:14:15,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:15,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472716366] [2020-10-14 22:14:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:15,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:15,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:16,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:20,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:20,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1128 [2020-10-14 22:14:20,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:14:20,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-14 22:14:20,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:20,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:14:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 920 [2020-10-14 22:14:20,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 22:14:20,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:20,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:20,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:20,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:20,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:14:20,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:20,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:20,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:20,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:20,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:14:20,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:14:20,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:20,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:20,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:14:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:20,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:20,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:20,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:14:20,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:14:20,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:20,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:20,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:14:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:20,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:20,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:14:20,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 22:14:20,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:20,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:14:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:21,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:21,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 22:14:21,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:21,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 22:14:21,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:21,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:21,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-14 22:14:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:21,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:21,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:21,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:14:21,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:21,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:14:21,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:21,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:21,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:21,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:21,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 22:14:21,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:21,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 910 [2020-10-14 22:14:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:21,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:21,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:21,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:14:21,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:14:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 22:14:21,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:21,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 22:14:21,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 372 proven. 6 refuted. 0 times theorem prover too weak. 2172 trivial. 0 not checked. [2020-10-14 22:14:21,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472716366] [2020-10-14 22:14:21,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:21,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:14:21,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935854708] [2020-10-14 22:14:21,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:14:21,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:21,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:14:21,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:14:21,944 INFO L87 Difference]: Start difference. First operand 12028 states and 12979 transitions. Second operand 5 states. [2020-10-14 22:14:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:24,427 INFO L93 Difference]: Finished difference Result 27087 states and 29399 transitions. [2020-10-14 22:14:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:14:24,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1108 [2020-10-14 22:14:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:24,456 INFO L225 Difference]: With dead ends: 27087 [2020-10-14 22:14:24,456 INFO L226 Difference]: Without dead ends: 15404 [2020-10-14 22:14:24,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 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 22:14:24,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15404 states. [2020-10-14 22:14:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15404 to 14730. [2020-10-14 22:14:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14730 states. [2020-10-14 22:14:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14730 states to 14730 states and 15933 transitions. [2020-10-14 22:14:24,684 INFO L78 Accepts]: Start accepts. Automaton has 14730 states and 15933 transitions. Word has length 1108 [2020-10-14 22:14:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:24,685 INFO L479 AbstractCegarLoop]: Abstraction has 14730 states and 15933 transitions. [2020-10-14 22:14:24,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:14:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 14730 states and 15933 transitions. [2020-10-14 22:14:24,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1322 [2020-10-14 22:14:24,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:24,724 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:24,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:14:24,724 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:24,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:24,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1801788, now seen corresponding path program 1 times [2020-10-14 22:14:24,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:24,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237298436] [2020-10-14 22:14:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:25,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:25,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:28,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:29,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:30,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:30,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1341 [2020-10-14 22:14:30,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:14:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-14 22:14:30,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:30,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-14 22:14:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:14:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:30,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:30,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:30,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:30,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:30,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:14:30,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:30,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:30,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:30,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:30,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:30,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:14:30,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:30,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:14:30,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:30,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:30,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:30,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:30,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:30,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:14:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:30,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:30,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:30,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:14:30,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 22:14:30,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:30,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:30,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:30,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:30,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:14:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:30,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:30,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:14:30,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:30,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:14:30,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:30,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:30,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-14 22:14:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:30,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:30,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:30,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 22:14:30,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:30,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 22:14:30,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:30,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:30,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 22:14:30,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:30,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-14 22:14:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:30,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:30,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:30,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:14:30,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 22:14:30,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:30,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:14:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:31,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-14 22:14:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:31,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:31,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:31,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 22:14:31,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 22:14:31,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:31,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-14 22:14:31,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3046 backedges. 1147 proven. 197 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2020-10-14 22:14:32,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237298436] [2020-10-14 22:14:32,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:32,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:32,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995169520] [2020-10-14 22:14:32,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:32,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:32,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:32,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:32,754 INFO L87 Difference]: Start difference. First operand 14730 states and 15933 transitions. Second operand 7 states. [2020-10-14 22:14:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:36,222 INFO L93 Difference]: Finished difference Result 30814 states and 33312 transitions. [2020-10-14 22:14:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:14:36,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1321 [2020-10-14 22:14:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:36,256 INFO L225 Difference]: With dead ends: 30814 [2020-10-14 22:14:36,256 INFO L226 Difference]: Without dead ends: 16429 [2020-10-14 22:14:36,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 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 22:14:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16429 states. [2020-10-14 22:14:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16429 to 16086. [2020-10-14 22:14:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16086 states. [2020-10-14 22:14:36,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16086 states to 16086 states and 17336 transitions. [2020-10-14 22:14:36,486 INFO L78 Accepts]: Start accepts. Automaton has 16086 states and 17336 transitions. Word has length 1321 [2020-10-14 22:14:36,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:36,487 INFO L479 AbstractCegarLoop]: Abstraction has 16086 states and 17336 transitions. [2020-10-14 22:14:36,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:36,488 INFO L276 IsEmpty]: Start isEmpty. Operand 16086 states and 17336 transitions. [2020-10-14 22:14:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1417 [2020-10-14 22:14:36,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:36,522 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:14:36,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 22:14:36,522 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:36,523 INFO L82 PathProgramCache]: Analyzing trace with hash -543307511, now seen corresponding path program 1 times [2020-10-14 22:14:36,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:36,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660085313] [2020-10-14 22:14:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:36,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:41,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:41,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1440 [2020-10-14 22:14:41,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:14:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 22:14:41,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:41,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1176 [2020-10-14 22:14:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:14:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:41,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:41,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:41,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:41,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:41,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:41,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:14:41,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:41,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:41,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:41,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:41,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:41,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:14:41,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:14:41,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:41,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:41,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:41,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:14:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:42,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:42,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:14:42,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:42,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:14:42,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:42,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:42,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:14:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:42,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:42,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:42,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:14:42,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 22:14:42,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:42,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:42,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:42,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:14:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:42,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:42,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 22:14:42,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:42,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 22:14:42,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:42,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:42,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:42,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:42,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:42,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:42,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-14 22:14:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:42,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:42,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:42,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:14:42,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:42,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:14:42,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:42,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:42,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:42,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 910 [2020-10-14 22:14:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:42,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:42,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:42,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:14:42,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:42,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:14:42,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:42,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:42,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-14 22:14:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:42,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:14:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:14:42,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:42,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:14:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:42,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1162 [2020-10-14 22:14:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:42,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:42,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:42,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 22:14:42,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:42,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 22:14:42,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:42,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:42,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:42,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 22:14:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4408 backedges. 1549 proven. 2 refuted. 0 times theorem prover too weak. 2857 trivial. 0 not checked. [2020-10-14 22:14:43,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660085313] [2020-10-14 22:14:43,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:43,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:43,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389232597] [2020-10-14 22:14:43,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:43,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:43,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:43,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:43,870 INFO L87 Difference]: Start difference. First operand 16086 states and 17336 transitions. Second operand 7 states. [2020-10-14 22:14:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:47,215 INFO L93 Difference]: Finished difference Result 32192 states and 34729 transitions. [2020-10-14 22:14:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:14:47,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1416 [2020-10-14 22:14:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:47,251 INFO L225 Difference]: With dead ends: 32192 [2020-10-14 22:14:47,251 INFO L226 Difference]: Without dead ends: 16102 [2020-10-14 22:14:47,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:14:47,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16102 states. [2020-10-14 22:14:47,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16102 to 14724. [2020-10-14 22:14:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14724 states. [2020-10-14 22:14:47,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14724 states to 14724 states and 15593 transitions. [2020-10-14 22:14:47,483 INFO L78 Accepts]: Start accepts. Automaton has 14724 states and 15593 transitions. Word has length 1416 [2020-10-14 22:14:47,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:47,485 INFO L479 AbstractCegarLoop]: Abstraction has 14724 states and 15593 transitions. [2020-10-14 22:14:47,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:47,485 INFO L276 IsEmpty]: Start isEmpty. Operand 14724 states and 15593 transitions. [2020-10-14 22:14:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1583 [2020-10-14 22:14:47,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:47,532 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:14:47,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 22:14:47,533 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:47,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:47,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1940855410, now seen corresponding path program 1 times [2020-10-14 22:14:47,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:47,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305703313] [2020-10-14 22:14:47,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:47,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:48,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:52,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:52,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1608 [2020-10-14 22:14:52,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:14:52,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 22:14:52,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:52,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1176 [2020-10-14 22:14:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 22:14:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:53,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:53,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:14:53,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:53,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:14:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:14:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:14:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:14:53,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:14:53,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:53,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:53,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:14:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:14:53,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:14:53,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:14:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 22:14:53,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:14:53,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:53,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:53,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-14 22:14:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:14:53,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:14:53,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:53,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:53,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 910 [2020-10-14 22:14:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:14:53,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:14:53,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:53,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:53,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:53,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-14 22:14:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:14:53,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:14:53,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:53,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:53,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:14:53,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:53,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1162 [2020-10-14 22:14:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 22:14:53,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 22:14:53,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:53,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:53,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 22:14:53,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:53,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1377 [2020-10-14 22:14:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:53,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:53,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:53,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:14:53,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:14:53,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:53,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 22:14:53,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:53,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:14:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5626 backedges. 1668 proven. 148 refuted. 0 times theorem prover too weak. 3810 trivial. 0 not checked. [2020-10-14 22:14:55,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305703313] [2020-10-14 22:14:55,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:55,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:55,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632820369] [2020-10-14 22:14:55,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:55,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:55,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:55,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:55,895 INFO L87 Difference]: Start difference. First operand 14724 states and 15593 transitions. Second operand 7 states. [2020-10-14 22:14:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:59,130 INFO L93 Difference]: Finished difference Result 29111 states and 30851 transitions. [2020-10-14 22:14:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:14:59,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1582 [2020-10-14 22:14:59,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:59,159 INFO L225 Difference]: With dead ends: 29111 [2020-10-14 22:14:59,160 INFO L226 Difference]: Without dead ends: 14732 [2020-10-14 22:14:59,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:14:59,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14732 states. [2020-10-14 22:14:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14732 to 14724. [2020-10-14 22:14:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14724 states. [2020-10-14 22:14:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14724 states to 14724 states and 15582 transitions. [2020-10-14 22:14:59,362 INFO L78 Accepts]: Start accepts. Automaton has 14724 states and 15582 transitions. Word has length 1582 [2020-10-14 22:14:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:59,363 INFO L479 AbstractCegarLoop]: Abstraction has 14724 states and 15582 transitions. [2020-10-14 22:14:59,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:59,363 INFO L276 IsEmpty]: Start isEmpty. Operand 14724 states and 15582 transitions. [2020-10-14 22:14:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2020-10-14 22:14:59,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:59,398 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:14:59,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 22:14:59,398 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:59,399 INFO L82 PathProgramCache]: Analyzing trace with hash -771138442, now seen corresponding path program 1 times [2020-10-14 22:14:59,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:59,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12649379] [2020-10-14 22:14:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:59,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:04,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:04,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1710 [2020-10-14 22:15:04,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:15:04,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 22:15:04,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:04,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1003 [2020-10-14 22:15:04,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:15:04,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:04,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:04,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:04,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:04,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:04,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:15:04,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:04,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:04,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:04,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:04,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:15:04,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:15:04,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:04,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:05,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:15:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:05,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:05,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:05,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:15:05,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:05,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:15:05,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:05,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:05,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:05,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:05,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:15:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:05,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:05,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:05,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:15:05,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:15:05,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:05,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:05,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:05,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:05,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2020-10-14 22:15:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:05,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:05,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:05,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 22:15:05,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 22:15:05,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:05,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:05,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-14 22:15:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:05,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-14 22:15:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:05,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:05,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:05,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:05,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 22:15:05,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:05,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:15:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1268 [2020-10-14 22:15:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:06,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:06,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 22:15:06,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:15:06,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:06,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-14 22:15:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:06,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1483 [2020-10-14 22:15:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:06,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:06,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:15:06,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:06,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:15:06,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:06,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 22:15:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4748 backedges. 1418 proven. 360 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2020-10-14 22:15:07,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12649379] [2020-10-14 22:15:07,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:07,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:07,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857674892] [2020-10-14 22:15:07,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:07,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:07,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:07,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:07,797 INFO L87 Difference]: Start difference. First operand 14724 states and 15582 transitions. Second operand 7 states. [2020-10-14 22:15:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:11,152 INFO L93 Difference]: Finished difference Result 29111 states and 30829 transitions. [2020-10-14 22:15:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:15:11,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1688 [2020-10-14 22:15:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:11,178 INFO L225 Difference]: With dead ends: 29111 [2020-10-14 22:15:11,178 INFO L226 Difference]: Without dead ends: 14732 [2020-10-14 22:15:11,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:15:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14732 states. [2020-10-14 22:15:11,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14732 to 14724. [2020-10-14 22:15:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14724 states. [2020-10-14 22:15:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14724 states to 14724 states and 15578 transitions. [2020-10-14 22:15:11,354 INFO L78 Accepts]: Start accepts. Automaton has 14724 states and 15578 transitions. Word has length 1688 [2020-10-14 22:15:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:11,355 INFO L479 AbstractCegarLoop]: Abstraction has 14724 states and 15578 transitions. [2020-10-14 22:15:11,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:11,355 INFO L276 IsEmpty]: Start isEmpty. Operand 14724 states and 15578 transitions. [2020-10-14 22:15:11,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2020-10-14 22:15:11,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:11,385 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 22:15:11,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 22:15:11,385 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:11,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:11,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1878491787, now seen corresponding path program 1 times [2020-10-14 22:15:11,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:11,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373539192] [2020-10-14 22:15:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:11,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:12,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:16,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:16,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1744 [2020-10-14 22:15:16,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:15:16,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 22:15:16,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:16,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1037 [2020-10-14 22:15:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:15:16,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:16,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:16,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:16,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:16,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:15:16,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:16,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:16,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:16,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:16,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:16,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:16,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:15:16,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:15:16,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:16,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:15:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:16,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:16,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:16,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:15:16,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:15:16,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:16,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:16,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:16,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:15:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:16,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:16,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:16,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 22:15:16,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:16,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:15:16,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:16,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:16,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:17,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-14 22:15:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:17,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:17,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 22:15:17,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:17,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:15:17,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:17,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:17,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-10-14 22:15:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:17,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:17,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 22:15:17,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 22:15:17,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:17,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-14 22:15:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:17,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1027 [2020-10-14 22:15:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:17,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:17,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:17,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:17,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 22:15:17,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:17,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:17,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:15:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1300 [2020-10-14 22:15:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:17,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:17,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:17,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 22:15:17,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:17,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 22:15:17,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:17,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-14 22:15:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:17,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:17,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1515 [2020-10-14 22:15:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:17,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:18,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:18,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:15:18,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:15:18,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:18,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 22:15:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:18,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5358 backedges. 1520 proven. 360 refuted. 0 times theorem prover too weak. 3478 trivial. 0 not checked. [2020-10-14 22:15:19,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373539192] [2020-10-14 22:15:19,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:19,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:19,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753687901] [2020-10-14 22:15:19,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:19,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:19,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:19,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:19,551 INFO L87 Difference]: Start difference. First operand 14724 states and 15578 transitions. Second operand 7 states. [2020-10-14 22:15:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:22,793 INFO L93 Difference]: Finished difference Result 29111 states and 30821 transitions. [2020-10-14 22:15:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:15:22,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1720 [2020-10-14 22:15:22,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:22,818 INFO L225 Difference]: With dead ends: 29111 [2020-10-14 22:15:22,818 INFO L226 Difference]: Without dead ends: 14732 [2020-10-14 22:15:22,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:15:22,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14732 states. [2020-10-14 22:15:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14732 to 14724. [2020-10-14 22:15:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14724 states. [2020-10-14 22:15:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14724 states to 14724 states and 15574 transitions. [2020-10-14 22:15:23,092 INFO L78 Accepts]: Start accepts. Automaton has 14724 states and 15574 transitions. Word has length 1720 [2020-10-14 22:15:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:23,095 INFO L479 AbstractCegarLoop]: Abstraction has 14724 states and 15574 transitions. [2020-10-14 22:15:23,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:23,095 INFO L276 IsEmpty]: Start isEmpty. Operand 14724 states and 15574 transitions. [2020-10-14 22:15:23,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1856 [2020-10-14 22:15:23,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:23,160 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 4, 4, 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] [2020-10-14 22:15:23,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 22:15:23,161 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:23,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:23,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1285161312, now seen corresponding path program 1 times [2020-10-14 22:15:23,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:23,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141884325] [2020-10-14 22:15:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:23,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:24,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:28,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:28,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1883 [2020-10-14 22:15:28,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:15:28,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-14 22:15:28,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:28,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1176 [2020-10-14 22:15:28,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:15:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:28,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:28,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:28,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:28,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:28,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:15:28,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:28,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:28,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:28,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:28,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:15:28,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 22:15:28,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:28,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:28,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:15:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:28,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:28,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:28,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:15:28,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:15:28,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:28,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:28,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:15:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:28,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:28,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:15:28,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:28,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:15:28,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:28,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:28,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:28,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:15:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:29,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:29,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 22:15:29,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:29,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:15:29,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:29,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:29,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:29,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:29,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2020-10-14 22:15:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:29,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:29,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:29,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:15:29,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:15:29,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:29,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:29,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:29,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 910 [2020-10-14 22:15:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:29,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:29,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:15:29,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:29,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:15:29,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:29,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:29,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:29,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-14 22:15:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:29,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:29,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:15:29,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:15:29,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:29,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:15:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:29,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1162 [2020-10-14 22:15:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:29,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:29,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:29,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:29,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 22:15:29,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:29,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:15:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:29,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1435 [2020-10-14 22:15:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:29,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:29,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 22:15:29,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:15:29,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:29,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:29,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-14 22:15:29,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:29,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:29,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1650 [2020-10-14 22:15:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:29,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:29,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:29,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:15:29,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:15:29,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:29,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 22:15:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7201 backedges. 1789 proven. 360 refuted. 0 times theorem prover too weak. 5052 trivial. 0 not checked. [2020-10-14 22:15:31,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141884325] [2020-10-14 22:15:31,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:31,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:31,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28197687] [2020-10-14 22:15:31,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:31,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:31,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:31,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:31,260 INFO L87 Difference]: Start difference. First operand 14724 states and 15574 transitions. Second operand 7 states. [2020-10-14 22:15:34,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:34,989 INFO L93 Difference]: Finished difference Result 33176 states and 35235 transitions. [2020-10-14 22:15:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:15:34,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1855 [2020-10-14 22:15:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:35,018 INFO L225 Difference]: With dead ends: 33176 [2020-10-14 22:15:35,018 INFO L226 Difference]: Without dead ends: 18797 [2020-10-14 22:15:35,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:15:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18797 states. [2020-10-14 22:15:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18797 to 17778. [2020-10-14 22:15:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17778 states. [2020-10-14 22:15:35,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17778 states to 17778 states and 18786 transitions. [2020-10-14 22:15:35,197 INFO L78 Accepts]: Start accepts. Automaton has 17778 states and 18786 transitions. Word has length 1855 [2020-10-14 22:15:35,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:35,198 INFO L479 AbstractCegarLoop]: Abstraction has 17778 states and 18786 transitions. [2020-10-14 22:15:35,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 17778 states and 18786 transitions. [2020-10-14 22:15:35,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1891 [2020-10-14 22:15:35,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:35,237 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 22:15:35,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 22:15:35,238 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:35,238 INFO L82 PathProgramCache]: Analyzing trace with hash -679136356, now seen corresponding path program 1 times [2020-10-14 22:15:35,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:35,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671500773] [2020-10-14 22:15:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:35,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:35,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:40,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:40,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1918 [2020-10-14 22:15:40,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:15:40,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 22:15:40,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:40,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:15:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1181 [2020-10-14 22:15:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-14 22:15:40,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:40,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:40,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:40,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:40,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:40,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:40,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:15:40,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:40,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:40,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:40,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:40,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:15:40,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:40,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 22:15:40,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:40,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:40,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:15:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:40,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:40,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:40,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:15:40,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:40,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 22:15:40,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:40,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:40,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:40,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:40,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:15:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:40,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:40,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:40,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 22:15:40,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:15:40,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:40,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:40,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:40,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:40,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-14 22:15:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:40,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:40,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 22:15:40,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:40,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 22:15:40,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:40,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:40,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:40,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-10-14 22:15:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:40,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:41,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:41,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 22:15:41,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 22:15:41,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:41,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:41,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:41,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1027 [2020-10-14 22:15:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:41,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:41,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:15:41,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:41,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-14 22:15:41,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:41,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:41,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 22:15:41,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:41,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1169 [2020-10-14 22:15:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:41,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:41,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 22:15:41,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:41,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-14 22:15:41,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:41,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:15:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:41,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-14 22:15:41,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:41,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:15:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:41,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:41,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 22:15:41,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:41,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:15:41,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:41,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:15:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 22:15:41,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1470 [2020-10-14 22:15:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:42,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:42,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 22:15:42,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:15:42,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:42,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-14 22:15:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:42,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1685 [2020-10-14 22:15:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:42,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:42,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:42,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 22:15:42,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:42,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:15:42,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:42,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 22:15:42,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:42,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6541 backedges. 1729 proven. 360 refuted. 0 times theorem prover too weak. 4452 trivial. 0 not checked. [2020-10-14 22:15:43,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671500773] [2020-10-14 22:15:43,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:43,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:15:43,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665449080] [2020-10-14 22:15:43,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:15:43,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:43,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:15:43,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:15:43,760 INFO L87 Difference]: Start difference. First operand 17778 states and 18786 transitions. Second operand 8 states. [2020-10-14 22:15:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:48,514 INFO L93 Difference]: Finished difference Result 35558 states and 37576 transitions. [2020-10-14 22:15:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:15:48,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1890 [2020-10-14 22:15:48,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:48,548 INFO L225 Difference]: With dead ends: 35558 [2020-10-14 22:15:48,548 INFO L226 Difference]: Without dead ends: 18125 [2020-10-14 22:15:48,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:15:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18125 states. [2020-10-14 22:15:48,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18125 to 17106. [2020-10-14 22:15:48,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17106 states. [2020-10-14 22:15:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17106 states to 17106 states and 17735 transitions. [2020-10-14 22:15:48,725 INFO L78 Accepts]: Start accepts. Automaton has 17106 states and 17735 transitions. Word has length 1890 [2020-10-14 22:15:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:48,726 INFO L479 AbstractCegarLoop]: Abstraction has 17106 states and 17735 transitions. [2020-10-14 22:15:48,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:15:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 17106 states and 17735 transitions. [2020-10-14 22:15:48,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2042 [2020-10-14 22:15:48,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:48,776 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:48,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 22:15:48,777 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:48,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:48,778 INFO L82 PathProgramCache]: Analyzing trace with hash 377948412, now seen corresponding path program 1 times [2020-10-14 22:15:48,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:48,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735785949] [2020-10-14 22:15:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking...