/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:10:02,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:10:02,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:10:02,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:10:02,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:10:02,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:10:02,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:10:02,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:10:02,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:10:02,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:10:02,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:10:02,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:10:02,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:10:02,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:10:02,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:10:02,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:10:02,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:10:02,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:10:02,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:10:03,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:10:03,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:10:03,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:10:03,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:10:03,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:10:03,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:10:03,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:10:03,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:10:03,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:10:03,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:10:03,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:10:03,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:10:03,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:10:03,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:10:03,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:10:03,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:10:03,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:10:03,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:10:03,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:10:03,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:10:03,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:10:03,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:10:03,038 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 [2020-10-27 18:10:03,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:10:03,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:10:03,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:10:03,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:10:03,102 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:10:03,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:10:03,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:10:03,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:10:03,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:10:03,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:10:03,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:10:03,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:10:03,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:10:03,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:10:03,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:10:03,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:10:03,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:10:03,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:10:03,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:10:03,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:10:03,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:10:03,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:10:03,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:10:03,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:10:03,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:10:03,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:10:03,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:10:03,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:10:03,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:10:03,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:10:03,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:10:03,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:10:03,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:10:03,611 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:10:03,612 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:10:03,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label04.c [2020-10-27 18:10:03,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efa8913f0/1f1e54c3c5704333bd6e866e9d40dd33/FLAGac865b4d8 [2020-10-27 18:10:04,566 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:10:04,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label04.c [2020-10-27 18:10:04,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efa8913f0/1f1e54c3c5704333bd6e866e9d40dd33/FLAGac865b4d8 [2020-10-27 18:10:04,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efa8913f0/1f1e54c3c5704333bd6e866e9d40dd33 [2020-10-27 18:10:04,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:10:04,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:10:04,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:10:04,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:10:04,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:10:04,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:10:04" (1/1) ... [2020-10-27 18:10:04,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a18d51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:04, skipping insertion in model container [2020-10-27 18:10:04,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:10:04" (1/1) ... [2020-10-27 18:10:04,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:10:04,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:10:05,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:10:05,619 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:10:05,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:10:05,751 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:10:05,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:05 WrapperNode [2020-10-27 18:10:05,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:10:05,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:10:05,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:10:05,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:10:05,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:05" (1/1) ... [2020-10-27 18:10:05,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:05" (1/1) ... [2020-10-27 18:10:05,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:05" (1/1) ... [2020-10-27 18:10:05,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:05" (1/1) ... [2020-10-27 18:10:05,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:05" (1/1) ... [2020-10-27 18:10:05,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:05" (1/1) ... [2020-10-27 18:10:05,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:05" (1/1) ... [2020-10-27 18:10:05,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:10:05,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:10:05,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:10:05,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:10:05,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:05" (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 [2020-10-27 18:10:06,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:10:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:10:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:10:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:10:06,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:10:06,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:10:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:10:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:10:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:10:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:10:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:10:06,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:10:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:10:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:10:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:10:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:10:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:10:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:10:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:10:07,803 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:10:07,803 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:10:07,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:10:07 BoogieIcfgContainer [2020-10-27 18:10:07,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:10:07,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:10:07,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:10:07,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:10:07,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:10:04" (1/3) ... [2020-10-27 18:10:07,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd4ffa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:10:07, skipping insertion in model container [2020-10-27 18:10:07,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:10:05" (2/3) ... [2020-10-27 18:10:07,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd4ffa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:10:07, skipping insertion in model container [2020-10-27 18:10:07,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:10:07" (3/3) ... [2020-10-27 18:10:07,816 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label04.c [2020-10-27 18:10:07,829 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:10:07,835 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:10:07,849 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:10:07,879 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:10:07,879 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:10:07,879 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:10:07,879 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:10:07,880 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:10:07,880 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:10:07,880 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:10:07,880 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:10:07,906 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-27 18:10:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 18:10:07,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:10:07,917 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] [2020-10-27 18:10:07,917 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:10:07,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:10:07,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1113659686, now seen corresponding path program 1 times [2020-10-27 18:10:07,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:10:07,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431654753] [2020-10-27 18:10:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:10:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:08,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:08,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 18:10:08,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:08,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-10-27 18:10:08,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:10:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:10:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 18:10:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:10:08,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:10:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:08,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:08,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:08,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:10:08,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:08,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:10:08,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:08,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:10:08,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:08,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:10:08,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:10:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:10:09,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431654753] [2020-10-27 18:10:09,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:10:09,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 18:10:09,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960173227] [2020-10-27 18:10:09,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:10:09,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:10:09,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:10:09,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:10:09,076 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-27 18:10:11,087 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 18:10:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:10:13,215 INFO L93 Difference]: Finished difference Result 891 states and 1618 transitions. [2020-10-27 18:10:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:10:13,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-27 18:10:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:10:13,238 INFO L225 Difference]: With dead ends: 891 [2020-10-27 18:10:13,238 INFO L226 Difference]: Without dead ends: 565 [2020-10-27 18:10:13,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:10:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-27 18:10:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-27 18:10:13,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-27 18:10:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 856 transitions. [2020-10-27 18:10:13,350 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 856 transitions. Word has length 59 [2020-10-27 18:10:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:10:13,351 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 856 transitions. [2020-10-27 18:10:13,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:10:13,351 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 856 transitions. [2020-10-27 18:10:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 18:10:13,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:10:13,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:10:13,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:10:13,360 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:10:13,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:10:13,360 INFO L82 PathProgramCache]: Analyzing trace with hash -179012903, now seen corresponding path program 1 times [2020-10-27 18:10:13,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:10:13,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941333019] [2020-10-27 18:10:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:10:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:13,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:15,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:15,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 18:10:15,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:10:15,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1597 [2020-10-27 18:10:15,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:10:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:10:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 18:10:15,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:10:15,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:10:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:15,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:15,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:10:15,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:15,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:10:15,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:10:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:15,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:10:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:10:15,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:10:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:15,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:15,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:15,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:10:15,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:10:15,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:10:15,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:15,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:10:15,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:10:15,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941333019] [2020-10-27 18:10:15,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:10:15,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:10:15,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884977259] [2020-10-27 18:10:15,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:10:15,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:10:15,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:10:15,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:10:15,449 INFO L87 Difference]: Start difference. First operand 561 states and 856 transitions. Second operand 5 states. [2020-10-27 18:10:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:10:17,927 INFO L93 Difference]: Finished difference Result 1672 states and 2583 transitions. [2020-10-27 18:10:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:10:17,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-27 18:10:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:10:17,945 INFO L225 Difference]: With dead ends: 1672 [2020-10-27 18:10:17,945 INFO L226 Difference]: Without dead ends: 1117 [2020-10-27 18:10:17,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:10:17,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2020-10-27 18:10:18,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 929. [2020-10-27 18:10:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-10-27 18:10:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1288 transitions. [2020-10-27 18:10:18,046 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1288 transitions. Word has length 128 [2020-10-27 18:10:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:10:18,047 INFO L481 AbstractCegarLoop]: Abstraction has 929 states and 1288 transitions. [2020-10-27 18:10:18,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:10:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1288 transitions. [2020-10-27 18:10:18,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 18:10:18,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:10:18,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:10:18,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:10:18,052 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:10:18,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:10:18,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1968714655, now seen corresponding path program 1 times [2020-10-27 18:10:18,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:10:18,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911374797] [2020-10-27 18:10:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:10:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:18,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:18,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:18,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 18:10:18,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:18,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-27 18:10:18,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:10:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:10:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 18:10:18,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:18,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:10:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:18,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:18,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:10:18,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:10:18,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:10:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:18,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:10:18,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:10:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:10:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:18,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:18,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:10:18,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:18,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 18:10:18,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:18,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:10:18,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:10:18,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:10:18,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:10:19,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911374797] [2020-10-27 18:10:19,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:10:19,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 18:10:19,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113150185] [2020-10-27 18:10:19,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:10:19,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:10:19,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:10:19,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:10:19,121 INFO L87 Difference]: Start difference. First operand 929 states and 1288 transitions. Second operand 7 states. [2020-10-27 18:10:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:10:22,081 INFO L93 Difference]: Finished difference Result 2254 states and 3212 transitions. [2020-10-27 18:10:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:10:22,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-27 18:10:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:10:22,091 INFO L225 Difference]: With dead ends: 2254 [2020-10-27 18:10:22,091 INFO L226 Difference]: Without dead ends: 1331 [2020-10-27 18:10:22,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:10:22,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2020-10-27 18:10:22,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1311. [2020-10-27 18:10:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-27 18:10:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1690 transitions. [2020-10-27 18:10:22,149 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1690 transitions. Word has length 132 [2020-10-27 18:10:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:10:22,150 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1690 transitions. [2020-10-27 18:10:22,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:10:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1690 transitions. [2020-10-27 18:10:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-27 18:10:22,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:10:22,156 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:10:22,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:10:22,156 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:10:22,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:10:22,157 INFO L82 PathProgramCache]: Analyzing trace with hash -561334944, now seen corresponding path program 1 times [2020-10-27 18:10:22,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:10:22,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489842863] [2020-10-27 18:10:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:10:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:22,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:22,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 18:10:26,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:10:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4625 [2020-10-27 18:10:26,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:10:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-27 18:10:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 18:10:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:26,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:10:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:26,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:27,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:27,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:10:27,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:10:27,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:10:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:10:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:27,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:10:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:27,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:27,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 18:10:27,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:27,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:10:27,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:10:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:10:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:27,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 18:10:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:27,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:27,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:27,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:10:27,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 18:10:27,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:10:27,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:27,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:10:27,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-27 18:10:27,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489842863] [2020-10-27 18:10:27,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:10:27,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:10:27,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019394254] [2020-10-27 18:10:27,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:10:27,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:10:27,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:10:27,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:10:27,337 INFO L87 Difference]: Start difference. First operand 1311 states and 1690 transitions. Second operand 5 states. [2020-10-27 18:10:29,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:10:29,035 INFO L93 Difference]: Finished difference Result 2634 states and 3412 transitions. [2020-10-27 18:10:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:10:29,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-27 18:10:29,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:10:29,044 INFO L225 Difference]: With dead ends: 2634 [2020-10-27 18:10:29,044 INFO L226 Difference]: Without dead ends: 1317 [2020-10-27 18:10:29,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:10:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-10-27 18:10:29,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1311. [2020-10-27 18:10:29,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-27 18:10:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1686 transitions. [2020-10-27 18:10:29,099 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1686 transitions. Word has length 226 [2020-10-27 18:10:29,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:10:29,100 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1686 transitions. [2020-10-27 18:10:29,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:10:29,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1686 transitions. [2020-10-27 18:10:29,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-27 18:10:29,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:10:29,105 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:10:29,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:10:29,106 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:10:29,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:10:29,106 INFO L82 PathProgramCache]: Analyzing trace with hash -652181128, now seen corresponding path program 1 times [2020-10-27 18:10:29,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:10:29,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632390345] [2020-10-27 18:10:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:10:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:29,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:32,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:32,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-27 18:10:32,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:10:32,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3379 [2020-10-27 18:10:32,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:10:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-27 18:10:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 18:10:32,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:10:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:32,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:32,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:32,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:10:32,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:32,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:10:32,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:10:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:10:32,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:10:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:32,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 18:10:32,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:10:32,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:10:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:10:32,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:32,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 18:10:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:32,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:32,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:10:32,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 18:10:32,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:10:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 18:10:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 18:10:33,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632390345] [2020-10-27 18:10:33,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:10:33,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:10:33,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299411172] [2020-10-27 18:10:33,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:10:33,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:10:33,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:10:33,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:10:33,006 INFO L87 Difference]: Start difference. First operand 1311 states and 1686 transitions. Second operand 5 states. [2020-10-27 18:10:34,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:10:34,585 INFO L93 Difference]: Finished difference Result 2633 states and 3400 transitions. [2020-10-27 18:10:34,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:10:34,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-27 18:10:34,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:10:34,594 INFO L225 Difference]: With dead ends: 2633 [2020-10-27 18:10:34,594 INFO L226 Difference]: Without dead ends: 1315 [2020-10-27 18:10:34,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:10:34,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2020-10-27 18:10:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1309. [2020-10-27 18:10:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2020-10-27 18:10:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1677 transitions. [2020-10-27 18:10:34,643 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1677 transitions. Word has length 238 [2020-10-27 18:10:34,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:10:34,644 INFO L481 AbstractCegarLoop]: Abstraction has 1309 states and 1677 transitions. [2020-10-27 18:10:34,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:10:34,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1677 transitions. [2020-10-27 18:10:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-27 18:10:34,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:10:34,650 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:10:34,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:10:34,650 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:10:34,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:10:34,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1039124158, now seen corresponding path program 1 times [2020-10-27 18:10:34,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:10:34,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866144659] [2020-10-27 18:10:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:10:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:34,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:36,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:36,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:10:36,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:10:36,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1975 [2020-10-27 18:10:36,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:10:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 18:10:36,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 18:10:36,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:10:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:10:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:36,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:36,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:36,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:10:36,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:36,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:10:36,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:10:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:10:36,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:10:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:36,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:36,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:10:36,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:10:36,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:10:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:10:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:10:37,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 18:10:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:37,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:37,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:10:37,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 18:10:37,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:10:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:10:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:10:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:10:37,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866144659] [2020-10-27 18:10:37,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:10:37,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:10:37,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238295039] [2020-10-27 18:10:37,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:10:37,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:10:37,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:10:37,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:10:37,308 INFO L87 Difference]: Start difference. First operand 1309 states and 1677 transitions. Second operand 7 states. [2020-10-27 18:10:39,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:10:39,696 INFO L93 Difference]: Finished difference Result 2990 states and 3820 transitions. [2020-10-27 18:10:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:10:39,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-27 18:10:39,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:10:39,716 INFO L225 Difference]: With dead ends: 2990 [2020-10-27 18:10:39,716 INFO L226 Difference]: Without dead ends: 1687 [2020-10-27 18:10:39,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:10:39,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2020-10-27 18:10:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1681. [2020-10-27 18:10:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1681 states. [2020-10-27 18:10:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2091 transitions. [2020-10-27 18:10:39,780 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2091 transitions. Word has length 241 [2020-10-27 18:10:39,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:10:39,781 INFO L481 AbstractCegarLoop]: Abstraction has 1681 states and 2091 transitions. [2020-10-27 18:10:39,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:10:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2091 transitions. [2020-10-27 18:10:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 18:10:39,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:10:39,788 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:10:39,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:10:39,788 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:10:39,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:10:39,789 INFO L82 PathProgramCache]: Analyzing trace with hash -44990943, now seen corresponding path program 1 times [2020-10-27 18:10:39,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:10:39,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173187977] [2020-10-27 18:10:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:10:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:39,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:39,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:40,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:43,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:44,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:44,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-27 18:10:44,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:10:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 18:10:44,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:10:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-27 18:10:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-27 18:10:44,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:10:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:45,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:45,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:45,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:10:45,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:10:45,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:10:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:45,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:10:45,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:10:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:45,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:45,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 18:10:45,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:10:45,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:10:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:10:45,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 18:10:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:45,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:45,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:45,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:10:45,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-27 18:10:45,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:10:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:10:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:45,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 18:10:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:45,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:45,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:45,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 18:10:45,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:10:45,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 18:10:45,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:10:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:10:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:10:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:10:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 238 proven. 52 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-27 18:10:45,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173187977] [2020-10-27 18:10:45,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:10:45,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:10:45,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385041366] [2020-10-27 18:10:45,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:10:45,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:10:45,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:10:45,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:10:45,647 INFO L87 Difference]: Start difference. First operand 1681 states and 2091 transitions. Second operand 6 states. [2020-10-27 18:10:48,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:10:48,614 INFO L93 Difference]: Finished difference Result 3784 states and 5099 transitions. [2020-10-27 18:10:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:10:48,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 325 [2020-10-27 18:10:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:10:48,635 INFO L225 Difference]: With dead ends: 3784 [2020-10-27 18:10:48,635 INFO L226 Difference]: Without dead ends: 2291 [2020-10-27 18:10:48,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:10:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2020-10-27 18:10:48,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2061. [2020-10-27 18:10:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-27 18:10:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2561 transitions. [2020-10-27 18:10:48,739 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2561 transitions. Word has length 325 [2020-10-27 18:10:48,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:10:48,740 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2561 transitions. [2020-10-27 18:10:48,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:10:48,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2561 transitions. [2020-10-27 18:10:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-27 18:10:48,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:10:48,747 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:10:48,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:10:48,748 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:10:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:10:48,749 INFO L82 PathProgramCache]: Analyzing trace with hash -818969985, now seen corresponding path program 1 times [2020-10-27 18:10:48,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:10:48,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237661498] [2020-10-27 18:10:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:10:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:49,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:49,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:53,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:53,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-27 18:10:53,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:10:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4431 [2020-10-27 18:10:53,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:10:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-27 18:10:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 18:10:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:53,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:10:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:53,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:53,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:10:53,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:53,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:10:53,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:10:53,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:53,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:10:53,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:53,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:10:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:53,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:53,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 18:10:53,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:53,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:10:53,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:53,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:10:53,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:53,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:10:53,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:53,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 18:10:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:53,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:53,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:53,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:10:53,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:53,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 18:10:53,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:10:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:10:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 18:10:53,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:10:53,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 18:10:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:53,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:53,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:10:53,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:10:53,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:10:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 18:10:53,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:10:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:10:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:10:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:10:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:10:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-27 18:10:54,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237661498] [2020-10-27 18:10:54,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:10:54,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:10:54,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130977017] [2020-10-27 18:10:54,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:10:54,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:10:54,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:10:54,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:10:54,141 INFO L87 Difference]: Start difference. First operand 2061 states and 2561 transitions. Second operand 7 states. [2020-10-27 18:10:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:10:57,201 INFO L93 Difference]: Finished difference Result 4320 states and 5511 transitions. [2020-10-27 18:10:57,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:10:57,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-27 18:10:57,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:10:57,215 INFO L225 Difference]: With dead ends: 4320 [2020-10-27 18:10:57,215 INFO L226 Difference]: Without dead ends: 2447 [2020-10-27 18:10:57,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:10:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2020-10-27 18:10:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2439. [2020-10-27 18:10:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2439 states. [2020-10-27 18:10:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 2990 transitions. [2020-10-27 18:10:57,292 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 2990 transitions. Word has length 328 [2020-10-27 18:10:57,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:10:57,293 INFO L481 AbstractCegarLoop]: Abstraction has 2439 states and 2990 transitions. [2020-10-27 18:10:57,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:10:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 2990 transitions. [2020-10-27 18:10:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-27 18:10:57,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:10:57,301 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:10:57,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:10:57,302 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:10:57,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:10:57,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1622356823, now seen corresponding path program 1 times [2020-10-27 18:10:57,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:10:57,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670968187] [2020-10-27 18:10:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:10:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:10:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:57,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:10:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:02,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:02,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-27 18:11:02,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:11:02,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 18:11:02,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-27 18:11:02,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 18:11:02,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:02,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:02,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:02,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:02,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:11:02,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:02,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:02,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:02,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:02,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:02,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 18:11:02,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:11:02,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:02,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:02,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 18:11:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:02,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:02,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:02,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:11:02,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:02,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:11:02,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:02,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:02,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 18:11:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:02,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:02,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 18:11:02,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:02,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:11:02,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 18:11:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 156 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-27 18:11:02,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670968187] [2020-10-27 18:11:02,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:02,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:11:02,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560690945] [2020-10-27 18:11:02,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:11:02,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:02,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:11:02,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:11:02,824 INFO L87 Difference]: Start difference. First operand 2439 states and 2990 transitions. Second operand 5 states. [2020-10-27 18:11:04,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:04,488 INFO L93 Difference]: Finished difference Result 4712 states and 5836 transitions. [2020-10-27 18:11:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:11:04,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-27 18:11:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:04,503 INFO L225 Difference]: With dead ends: 4712 [2020-10-27 18:11:04,503 INFO L226 Difference]: Without dead ends: 2443 [2020-10-27 18:11:04,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:11:04,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2020-10-27 18:11:04,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2439. [2020-10-27 18:11:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2439 states. [2020-10-27 18:11:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2439 states to 2439 states and 2985 transitions. [2020-10-27 18:11:04,586 INFO L78 Accepts]: Start accepts. Automaton has 2439 states and 2985 transitions. Word has length 329 [2020-10-27 18:11:04,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:04,587 INFO L481 AbstractCegarLoop]: Abstraction has 2439 states and 2985 transitions. [2020-10-27 18:11:04,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:11:04,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2439 states and 2985 transitions. [2020-10-27 18:11:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-27 18:11:04,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:04,595 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:11:04,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:11:04,596 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:04,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:04,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1791033673, now seen corresponding path program 1 times [2020-10-27 18:11:04,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:04,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857935817] [2020-10-27 18:11:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:04,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:04,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:05,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:05,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:07,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:07,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-27 18:11:07,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:11:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3132 [2020-10-27 18:11:07,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 291 [2020-10-27 18:11:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 18:11:07,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:07,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:07,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:07,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:07,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:07,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:07,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:11:08,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:08,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:08,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:08,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:08,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:08,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:08,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:08,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:08,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 18:11:08,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:08,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:11:08,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:08,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 18:11:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:08,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:08,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:08,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:11:08,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:08,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:11:08,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-27 18:11:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:08,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:08,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:08,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 18:11:08,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 18:11:08,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 18:11:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 156 proven. 3 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-27 18:11:08,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857935817] [2020-10-27 18:11:08,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:08,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:11:08,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455710174] [2020-10-27 18:11:08,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:11:08,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:08,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:11:08,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:11:08,504 INFO L87 Difference]: Start difference. First operand 2439 states and 2985 transitions. Second operand 5 states. [2020-10-27 18:11:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:10,227 INFO L93 Difference]: Finished difference Result 4425 states and 5525 transitions. [2020-10-27 18:11:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:11:10,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-10-27 18:11:10,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:10,246 INFO L225 Difference]: With dead ends: 4425 [2020-10-27 18:11:10,247 INFO L226 Difference]: Without dead ends: 2061 [2020-10-27 18:11:10,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:11:10,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2020-10-27 18:11:10,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 2057. [2020-10-27 18:11:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2057 states. [2020-10-27 18:11:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2323 transitions. [2020-10-27 18:11:10,321 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2323 transitions. Word has length 336 [2020-10-27 18:11:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:10,322 INFO L481 AbstractCegarLoop]: Abstraction has 2057 states and 2323 transitions. [2020-10-27 18:11:10,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:11:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2323 transitions. [2020-10-27 18:11:10,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-27 18:11:10,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:10,333 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:11:10,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:11:10,334 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:10,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1864194462, now seen corresponding path program 1 times [2020-10-27 18:11:10,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:10,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553677501] [2020-10-27 18:11:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:10,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:13,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:13,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-27 18:11:13,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:11:13,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2659 [2020-10-27 18:11:13,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 343 [2020-10-27 18:11:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 18:11:13,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:13,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:13,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:13,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:13,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:11:13,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:13,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:13,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:13,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:13,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:11:13,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:11:13,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:13,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:11:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:13,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:13,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:13,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:11:13,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:13,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:11:13,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:13,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:13,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:13,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:13,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:11:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:13,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:13,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:11:13,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 18:11:13,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:13,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:11:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:13,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-27 18:11:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:13,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:13,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:11:13,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 18:11:13,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:13,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:11:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-27 18:11:13,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553677501] [2020-10-27 18:11:13,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:13,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:11:13,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203470177] [2020-10-27 18:11:13,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:11:13,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:13,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:11:13,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:11:13,920 INFO L87 Difference]: Start difference. First operand 2057 states and 2323 transitions. Second operand 7 states. [2020-10-27 18:11:16,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:16,077 INFO L93 Difference]: Finished difference Result 4126 states and 4698 transitions. [2020-10-27 18:11:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:11:16,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 461 [2020-10-27 18:11:16,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:16,090 INFO L225 Difference]: With dead ends: 4126 [2020-10-27 18:11:16,090 INFO L226 Difference]: Without dead ends: 2257 [2020-10-27 18:11:16,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:11:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2020-10-27 18:11:16,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2243. [2020-10-27 18:11:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2020-10-27 18:11:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 2516 transitions. [2020-10-27 18:11:16,169 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 2516 transitions. Word has length 461 [2020-10-27 18:11:16,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:16,171 INFO L481 AbstractCegarLoop]: Abstraction has 2243 states and 2516 transitions. [2020-10-27 18:11:16,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:11:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 2516 transitions. [2020-10-27 18:11:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-27 18:11:16,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:16,183 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:11:16,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:11:16,184 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:16,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:16,184 INFO L82 PathProgramCache]: Analyzing trace with hash 500580904, now seen corresponding path program 1 times [2020-10-27 18:11:16,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:16,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640199667] [2020-10-27 18:11:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:18,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:18,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-27 18:11:18,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:11:18,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1873 [2020-10-27 18:11:18,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:18,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:18,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-27 18:11:18,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 18:11:18,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:18,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:18,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:18,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:18,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:18,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:11:18,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:18,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:18,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:18,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:18,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:11:18,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:18,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:11:18,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:18,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:11:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:18,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:18,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:11:18,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:11:18,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:18,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:18,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:18,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:18,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:11:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:18,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:18,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:18,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:11:18,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:18,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:11:18,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:18,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 18:11:18,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:18,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:11:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:18,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:18,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:11:18,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:18,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 18:11:18,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:18,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:11:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-27 18:11:18,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640199667] [2020-10-27 18:11:18,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:18,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:11:18,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274794245] [2020-10-27 18:11:18,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:11:18,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:18,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:11:18,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:11:18,960 INFO L87 Difference]: Start difference. First operand 2243 states and 2516 transitions. Second operand 7 states. [2020-10-27 18:11:22,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:22,316 INFO L93 Difference]: Finished difference Result 5044 states and 5794 transitions. [2020-10-27 18:11:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:11:22,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 468 [2020-10-27 18:11:22,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:22,335 INFO L225 Difference]: With dead ends: 5044 [2020-10-27 18:11:22,335 INFO L226 Difference]: Without dead ends: 2989 [2020-10-27 18:11:22,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:11:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-10-27 18:11:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2801. [2020-10-27 18:11:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2020-10-27 18:11:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3124 transitions. [2020-10-27 18:11:22,419 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3124 transitions. Word has length 468 [2020-10-27 18:11:22,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:22,420 INFO L481 AbstractCegarLoop]: Abstraction has 2801 states and 3124 transitions. [2020-10-27 18:11:22,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:11:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3124 transitions. [2020-10-27 18:11:22,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2020-10-27 18:11:22,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:22,428 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:11:22,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:11:22,428 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:22,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:22,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2112169331, now seen corresponding path program 1 times [2020-10-27 18:11:22,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:22,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49974682] [2020-10-27 18:11:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:23,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:23,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 647 [2020-10-27 18:11:23,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:23,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-27 18:11:23,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-27 18:11:23,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 18:11:23,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:23,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:23,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:23,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:23,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:23,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:11:23,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:23,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:23,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:23,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:23,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:11:23,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:23,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:11:23,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:23,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:11:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:23,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:11:23,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:11:23,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:11:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:23,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:23,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:23,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:11:23,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:11:23,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:23,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:11:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:23,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:23,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:23,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:11:23,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:23,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:11:23,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:23,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-27 18:11:23,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 18:11:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:23,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:23,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:23,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:11:23,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:23,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 18:11:23,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:23,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:11:23,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 550 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-27 18:11:24,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49974682] [2020-10-27 18:11:24,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:24,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:11:24,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488559609] [2020-10-27 18:11:24,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:11:24,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:24,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:11:24,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:11:24,320 INFO L87 Difference]: Start difference. First operand 2801 states and 3124 transitions. Second operand 7 states. [2020-10-27 18:11:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:27,096 INFO L93 Difference]: Finished difference Result 5796 states and 6573 transitions. [2020-10-27 18:11:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:11:27,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 627 [2020-10-27 18:11:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:27,113 INFO L225 Difference]: With dead ends: 5796 [2020-10-27 18:11:27,113 INFO L226 Difference]: Without dead ends: 3183 [2020-10-27 18:11:27,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:11:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2020-10-27 18:11:27,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 3171. [2020-10-27 18:11:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3171 states. [2020-10-27 18:11:27,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 3535 transitions. [2020-10-27 18:11:27,210 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 3535 transitions. Word has length 627 [2020-10-27 18:11:27,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:27,212 INFO L481 AbstractCegarLoop]: Abstraction has 3171 states and 3535 transitions. [2020-10-27 18:11:27,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:11:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 3535 transitions. [2020-10-27 18:11:27,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2020-10-27 18:11:27,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:27,221 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:11:27,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:11:27,221 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:27,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:27,222 INFO L82 PathProgramCache]: Analyzing trace with hash 766389870, now seen corresponding path program 1 times [2020-10-27 18:11:27,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:27,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439629515] [2020-10-27 18:11:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:27,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:29,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:29,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 725 [2020-10-27 18:11:29,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:11:29,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1857 [2020-10-27 18:11:29,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:29,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 589 [2020-10-27 18:11:29,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 18:11:29,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:29,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:29,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:29,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:29,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:29,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:11:29,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:29,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:29,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:29,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:29,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:29,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:29,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:11:29,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:29,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:11:29,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:29,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:11:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:29,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:29,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:11:29,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:11:29,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:29,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:11:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:29,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:29,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:29,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:11:29,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:29,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:11:29,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:29,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:11:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:29,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:29,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:29,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:11:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:11:29,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:29,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 18:11:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:29,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:29,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:29,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:11:29,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 18:11:29,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:11:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:29,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-27 18:11:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:29,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:29,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:29,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:11:29,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:11:29,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:11:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:11:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 676 proven. 2 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2020-10-27 18:11:30,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439629515] [2020-10-27 18:11:30,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:30,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:11:30,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055099172] [2020-10-27 18:11:30,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:11:30,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:30,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:11:30,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:11:30,156 INFO L87 Difference]: Start difference. First operand 3171 states and 3535 transitions. Second operand 7 states. [2020-10-27 18:11:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:32,679 INFO L93 Difference]: Finished difference Result 7460 states and 8527 transitions. [2020-10-27 18:11:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:11:32,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 703 [2020-10-27 18:11:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:32,701 INFO L225 Difference]: With dead ends: 7460 [2020-10-27 18:11:32,701 INFO L226 Difference]: Without dead ends: 4477 [2020-10-27 18:11:32,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:11:32,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2020-10-27 18:11:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 4289. [2020-10-27 18:11:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4289 states. [2020-10-27 18:11:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4289 states to 4289 states and 4763 transitions. [2020-10-27 18:11:32,824 INFO L78 Accepts]: Start accepts. Automaton has 4289 states and 4763 transitions. Word has length 703 [2020-10-27 18:11:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:32,825 INFO L481 AbstractCegarLoop]: Abstraction has 4289 states and 4763 transitions. [2020-10-27 18:11:32,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:11:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4289 states and 4763 transitions. [2020-10-27 18:11:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2020-10-27 18:11:32,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:32,835 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, 6, 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, 4, 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, 1, 1, 1, 1, 1, 1] [2020-10-27 18:11:32,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:11:32,836 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:32,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:32,837 INFO L82 PathProgramCache]: Analyzing trace with hash 79933198, now seen corresponding path program 1 times [2020-10-27 18:11:32,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:32,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469986398] [2020-10-27 18:11:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:33,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:33,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:35,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:38,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:38,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 784 [2020-10-27 18:11:38,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:11:38,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 18:11:38,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:38,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:11:38,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-27 18:11:38,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-27 18:11:38,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:38,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:38,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:38,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:38,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:11:38,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:38,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:38,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:38,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:38,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:11:38,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:38,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:11:38,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:38,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:38,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:38,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:38,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:11:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:38,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:38,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:11:38,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:11:38,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:38,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:38,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:38,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:38,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:11:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:38,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:38,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:11:38,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:11:38,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:38,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:38,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:11:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:38,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:38,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:11:38,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:11:38,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-27 18:11:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:38,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:38,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:38,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:11:38,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:11:38,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:11:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:38,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-27 18:11:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:38,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:38,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 18:11:38,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 18:11:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:11:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 18:11:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1797 backedges. 781 proven. 55 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2020-10-27 18:11:39,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469986398] [2020-10-27 18:11:39,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:39,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:11:39,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969932747] [2020-10-27 18:11:39,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:11:39,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:39,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:11:39,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:11:39,048 INFO L87 Difference]: Start difference. First operand 4289 states and 4763 transitions. Second operand 8 states. [2020-10-27 18:11:42,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:42,445 INFO L93 Difference]: Finished difference Result 9890 states and 11337 transitions. [2020-10-27 18:11:42,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:11:42,446 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 762 [2020-10-27 18:11:42,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:42,473 INFO L225 Difference]: With dead ends: 9890 [2020-10-27 18:11:42,473 INFO L226 Difference]: Without dead ends: 5789 [2020-10-27 18:11:42,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:11:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2020-10-27 18:11:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 5593. [2020-10-27 18:11:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5593 states. [2020-10-27 18:11:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5593 states to 5593 states and 6354 transitions. [2020-10-27 18:11:42,641 INFO L78 Accepts]: Start accepts. Automaton has 5593 states and 6354 transitions. Word has length 762 [2020-10-27 18:11:42,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:42,642 INFO L481 AbstractCegarLoop]: Abstraction has 5593 states and 6354 transitions. [2020-10-27 18:11:42,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:11:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5593 states and 6354 transitions. [2020-10-27 18:11:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2020-10-27 18:11:42,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:42,656 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, 6, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:11:42,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:11:42,657 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:42,657 INFO L82 PathProgramCache]: Analyzing trace with hash 418881246, now seen corresponding path program 1 times [2020-10-27 18:11:42,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:42,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446816172] [2020-10-27 18:11:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:44,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:45,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:47,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:47,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 817 [2020-10-27 18:11:47,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:11:47,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 18:11:47,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:11:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-27 18:11:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-27 18:11:47,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:48,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:48,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:48,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:48,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:48,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:48,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:11:48,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:11:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:48,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:48,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:11:48,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:48,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:11:48,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:48,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:48,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:48,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:11:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:48,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:48,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:48,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:11:48,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:11:48,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:11:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:48,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:48,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:11:48,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:48,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:11:48,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:48,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:48,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:11:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:48,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:48,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:11:48,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:48,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:11:48,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:48,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:48,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-27 18:11:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:48,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:48,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:48,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:11:48,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:11:48,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:11:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:48,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-27 18:11:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:48,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:48,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 18:11:48,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 18:11:48,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:11:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-27 18:11:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 838 proven. 34 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2020-10-27 18:11:49,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446816172] [2020-10-27 18:11:49,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:49,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:11:49,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091380103] [2020-10-27 18:11:49,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:11:49,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:49,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:11:49,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:11:49,284 INFO L87 Difference]: Start difference. First operand 5593 states and 6354 transitions. Second operand 8 states. [2020-10-27 18:11:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:11:52,041 INFO L93 Difference]: Finished difference Result 11260 states and 12865 transitions. [2020-10-27 18:11:52,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:11:52,042 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 795 [2020-10-27 18:11:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:11:52,062 INFO L225 Difference]: With dead ends: 11260 [2020-10-27 18:11:52,062 INFO L226 Difference]: Without dead ends: 5787 [2020-10-27 18:11:52,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:11:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2020-10-27 18:11:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5591. [2020-10-27 18:11:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5591 states. [2020-10-27 18:11:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 6337 transitions. [2020-10-27 18:11:52,221 INFO L78 Accepts]: Start accepts. Automaton has 5591 states and 6337 transitions. Word has length 795 [2020-10-27 18:11:52,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:11:52,222 INFO L481 AbstractCegarLoop]: Abstraction has 5591 states and 6337 transitions. [2020-10-27 18:11:52,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:11:52,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5591 states and 6337 transitions. [2020-10-27 18:11:52,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2020-10-27 18:11:52,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:11:52,235 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, 6, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:11:52,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 18:11:52,236 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:11:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:11:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash 28484946, now seen corresponding path program 1 times [2020-10-27 18:11:52,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:11:52,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75167730] [2020-10-27 18:11:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:11:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:52,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:57,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:57,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-27 18:11:57,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:11:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 18:11:57,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:11:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-27 18:11:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-27 18:11:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:57,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:11:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:57,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:57,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:11:57,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:57,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:11:57,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:57,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:57,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:11:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:57,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:57,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:11:57,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:57,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:11:57,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:57,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:57,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:11:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:57,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:57,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:11:57,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:57,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 18:11:57,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:57,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:11:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:57,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:57,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:57,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:11:57,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:57,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:11:57,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:57,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:57,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:57,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:11:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:57,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:57,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:11:57,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:11:57,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:11:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:11:57,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:57,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-27 18:11:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:57,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:57,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:57,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:11:57,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:11:57,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:11:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:11:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:11:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-27 18:11:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:11:58,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:11:58,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:11:58,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 18:11:58,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:11:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 18:11:58,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:11:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:11:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:11:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 18:11:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:11:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 865 proven. 8 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2020-10-27 18:11:59,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75167730] [2020-10-27 18:11:59,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:11:59,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:11:59,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078221783] [2020-10-27 18:11:59,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:11:59,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:11:59,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:11:59,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:11:59,441 INFO L87 Difference]: Start difference. First operand 5591 states and 6337 transitions. Second operand 8 states. [2020-10-27 18:12:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:02,753 INFO L93 Difference]: Finished difference Result 12110 states and 13860 transitions. [2020-10-27 18:12:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:12:02,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 796 [2020-10-27 18:12:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:02,787 INFO L225 Difference]: With dead ends: 12110 [2020-10-27 18:12:02,788 INFO L226 Difference]: Without dead ends: 6707 [2020-10-27 18:12:02,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:12:02,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2020-10-27 18:12:02,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 5969. [2020-10-27 18:12:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5969 states. [2020-10-27 18:12:02,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 6749 transitions. [2020-10-27 18:12:02,971 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 6749 transitions. Word has length 796 [2020-10-27 18:12:02,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:02,972 INFO L481 AbstractCegarLoop]: Abstraction has 5969 states and 6749 transitions. [2020-10-27 18:12:02,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:12:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 6749 transitions. [2020-10-27 18:12:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-27 18:12:02,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:02,986 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:02,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 18:12:02,986 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:02,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:02,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1276418668, now seen corresponding path program 1 times [2020-10-27 18:12:02,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:02,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790282791] [2020-10-27 18:12:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:04,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:04,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-27 18:12:04,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-10-27 18:12:04,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-27 18:12:04,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 18:12:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:04,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:04,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:04,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:12:04,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:04,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:04,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:04,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:12:04,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:12:04,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:12:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:04,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:04,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:12:04,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:04,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:12:04,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:04,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:04,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:04,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:12:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:04,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:04,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:12:04,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:12:04,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:04,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:04,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:12:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:04,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:04,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:04,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:12:04,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:04,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:12:04,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:04,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:04,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:04,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:04,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:04,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 18:12:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:04,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:04,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 18:12:04,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 18:12:04,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:04,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-27 18:12:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:04,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-27 18:12:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:04,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:04,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:04,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:12:04,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:12:04,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:04,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:12:04,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 676 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-27 18:12:05,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790282791] [2020-10-27 18:12:05,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:12:05,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:12:05,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462855591] [2020-10-27 18:12:05,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:12:05,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:12:05,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:12:05,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:12:05,595 INFO L87 Difference]: Start difference. First operand 5969 states and 6749 transitions. Second operand 8 states. [2020-10-27 18:12:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:09,605 INFO L93 Difference]: Finished difference Result 14126 states and 16373 transitions. [2020-10-27 18:12:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:12:09,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 800 [2020-10-27 18:12:09,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:09,650 INFO L225 Difference]: With dead ends: 14126 [2020-10-27 18:12:09,650 INFO L226 Difference]: Without dead ends: 8345 [2020-10-27 18:12:09,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-27 18:12:09,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8345 states. [2020-10-27 18:12:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8345 to 7253. [2020-10-27 18:12:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7253 states. [2020-10-27 18:12:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7253 states to 7253 states and 8154 transitions. [2020-10-27 18:12:09,851 INFO L78 Accepts]: Start accepts. Automaton has 7253 states and 8154 transitions. Word has length 800 [2020-10-27 18:12:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:09,852 INFO L481 AbstractCegarLoop]: Abstraction has 7253 states and 8154 transitions. [2020-10-27 18:12:09,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:12:09,852 INFO L276 IsEmpty]: Start isEmpty. Operand 7253 states and 8154 transitions. [2020-10-27 18:12:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-27 18:12:09,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:09,869 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:09,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 18:12:09,871 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:09,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1258546910, now seen corresponding path program 1 times [2020-10-27 18:12:09,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:09,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101320753] [2020-10-27 18:12:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:11,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:13,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:15,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 829 [2020-10-27 18:12:15,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:12:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 18:12:15,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 18:12:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 529 [2020-10-27 18:12:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 18:12:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:15,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:15,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:15,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:15,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:12:15,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:15,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:15,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:15,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:12:15,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:12:15,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:15,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:15,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:12:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:15,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:15,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:15,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:12:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:15,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:12:15,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:12:15,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:15,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:15,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:15,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:12:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:15,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:15,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:12:15,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:15,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 18:12:15,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 18:12:15,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:15,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-27 18:12:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:16,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:16,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 18:12:16,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:12:16,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-27 18:12:16,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:16,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 18:12:16,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:16,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 18:12:16,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:17,199 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-10-27 18:12:17,592 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2020-10-27 18:12:18,017 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2020-10-27 18:12:18,457 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2020-10-27 18:12:18,929 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2020-10-27 18:12:19,408 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-10-27 18:12:20,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-27 18:12:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:20,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:20,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:20,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:12:20,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:20,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:12:20,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 18:12:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:20,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 823 proven. 72 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-27 18:12:23,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101320753] [2020-10-27 18:12:23,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:12:23,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 18:12:23,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683836371] [2020-10-27 18:12:23,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 18:12:23,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:12:23,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 18:12:23,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 18:12:23,105 INFO L87 Difference]: Start difference. First operand 7253 states and 8154 transitions. Second operand 13 states. [2020-10-27 18:12:23,400 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2020-10-27 18:12:24,395 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2020-10-27 18:12:24,819 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 95 [2020-10-27 18:12:25,353 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 99 [2020-10-27 18:12:25,820 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 103 [2020-10-27 18:12:26,405 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 100 [2020-10-27 18:12:27,042 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 107 [2020-10-27 18:12:27,734 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 125 [2020-10-27 18:12:28,571 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 90 [2020-10-27 18:12:29,156 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2020-10-27 18:12:30,136 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2020-10-27 18:12:30,621 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 88 [2020-10-27 18:12:31,204 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 91 [2020-10-27 18:12:31,716 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 95 [2020-10-27 18:12:32,457 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 99 [2020-10-27 18:12:33,249 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 105 [2020-10-27 18:12:34,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:34,253 INFO L93 Difference]: Finished difference Result 14500 states and 16308 transitions. [2020-10-27 18:12:34,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 18:12:34,257 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 807 [2020-10-27 18:12:34,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:34,281 INFO L225 Difference]: With dead ends: 14500 [2020-10-27 18:12:34,281 INFO L226 Difference]: Without dead ends: 7327 [2020-10-27 18:12:34,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2020-10-27 18:12:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7327 states. [2020-10-27 18:12:34,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7327 to 7327. [2020-10-27 18:12:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7327 states. [2020-10-27 18:12:34,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7327 states to 7327 states and 8229 transitions. [2020-10-27 18:12:34,450 INFO L78 Accepts]: Start accepts. Automaton has 7327 states and 8229 transitions. Word has length 807 [2020-10-27 18:12:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:34,451 INFO L481 AbstractCegarLoop]: Abstraction has 7327 states and 8229 transitions. [2020-10-27 18:12:34,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 18:12:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 7327 states and 8229 transitions. [2020-10-27 18:12:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2020-10-27 18:12:34,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:34,467 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, 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:34,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 18:12:34,467 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:34,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:34,468 INFO L82 PathProgramCache]: Analyzing trace with hash -630036677, now seen corresponding path program 1 times [2020-10-27 18:12:34,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:34,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288922736] [2020-10-27 18:12:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:34,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:38,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:38,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 986 [2020-10-27 18:12:38,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:12:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4150 [2020-10-27 18:12:38,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:12:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-27 18:12:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:12:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:38,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:39,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:39,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:39,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:12:39,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:39,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:39,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:39,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:39,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:12:39,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:39,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:12:39,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:39,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:39,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:39,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:12:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:39,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:39,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:12:39,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:39,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:12:39,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:39,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:39,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:12:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:39,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:39,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:12:39,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:39,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:12:39,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:39,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:39,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:12:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:39,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:39,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:39,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:12:39,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:12:39,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:39,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 18:12:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:39,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:39,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 18:12:39,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:39,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 18:12:39,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:39,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:39,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-27 18:12:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:39,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:39,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:39,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 18:12:39,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:39,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 18:12:39,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:39,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:39,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:39,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-27 18:12:39,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:39,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-27 18:12:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:39,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:39,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:39,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:12:39,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-27 18:12:39,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:39,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:12:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:12:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 765 proven. 39 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2020-10-27 18:12:40,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288922736] [2020-10-27 18:12:40,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:12:40,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:12:40,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265962010] [2020-10-27 18:12:40,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:12:40,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:12:40,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:12:40,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:12:40,655 INFO L87 Difference]: Start difference. First operand 7327 states and 8229 transitions. Second operand 8 states. [2020-10-27 18:12:43,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:43,864 INFO L93 Difference]: Finished difference Result 14691 states and 16546 transitions. [2020-10-27 18:12:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:12:43,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 962 [2020-10-27 18:12:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:43,892 INFO L225 Difference]: With dead ends: 14691 [2020-10-27 18:12:43,893 INFO L226 Difference]: Without dead ends: 7517 [2020-10-27 18:12:43,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:12:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7517 states. [2020-10-27 18:12:44,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7517 to 7509. [2020-10-27 18:12:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7509 states. [2020-10-27 18:12:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7509 states to 7509 states and 8417 transitions. [2020-10-27 18:12:44,068 INFO L78 Accepts]: Start accepts. Automaton has 7509 states and 8417 transitions. Word has length 962 [2020-10-27 18:12:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:44,069 INFO L481 AbstractCegarLoop]: Abstraction has 7509 states and 8417 transitions. [2020-10-27 18:12:44,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:12:44,069 INFO L276 IsEmpty]: Start isEmpty. Operand 7509 states and 8417 transitions. [2020-10-27 18:12:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2020-10-27 18:12:44,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:44,086 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:44,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 18:12:44,086 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:44,087 INFO L82 PathProgramCache]: Analyzing trace with hash -788152188, now seen corresponding path program 1 times [2020-10-27 18:12:44,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:44,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888027466] [2020-10-27 18:12:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:44,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:44,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:44,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:48,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:49,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:49,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-27 18:12:49,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:12:49,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 18:12:49,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 757 [2020-10-27 18:12:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 18:12:49,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:49,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:49,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:49,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:49,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:49,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:12:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:49,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:49,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:49,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:49,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:12:49,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:12:49,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:12:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:49,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:49,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:12:49,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:12:49,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:49,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:12:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:49,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:49,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:12:49,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:49,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:12:49,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:49,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:49,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:49,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:12:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:49,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:49,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:49,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:12:49,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 18:12:49,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:49,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-27 18:12:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:49,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:49,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:49,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:12:49,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:12:49,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:49,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-27 18:12:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:49,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:49,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:49,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 18:12:49,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 18:12:49,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 18:12:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:49,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2020-10-27 18:12:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:49,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:49,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:49,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 18:12:49,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:49,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 18:12:49,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:49,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-27 18:12:49,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:50,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 875 [2020-10-27 18:12:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:50,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:50,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:12:50,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:50,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:12:50,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 18:12:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3119 backedges. 1111 proven. 72 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2020-10-27 18:12:50,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888027466] [2020-10-27 18:12:50,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:12:50,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:12:50,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747023440] [2020-10-27 18:12:50,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:12:50,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:12:50,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:12:50,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:12:50,719 INFO L87 Difference]: Start difference. First operand 7509 states and 8417 transitions. Second operand 7 states. [2020-10-27 18:12:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:12:53,336 INFO L93 Difference]: Finished difference Result 15970 states and 18013 transitions. [2020-10-27 18:12:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:12:53,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 999 [2020-10-27 18:12:53,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:12:53,357 INFO L225 Difference]: With dead ends: 15970 [2020-10-27 18:12:53,357 INFO L226 Difference]: Without dead ends: 7721 [2020-10-27 18:12:53,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:12:53,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7721 states. [2020-10-27 18:12:53,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7721 to 7133. [2020-10-27 18:12:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2020-10-27 18:12:53,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 7916 transitions. [2020-10-27 18:12:53,532 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 7916 transitions. Word has length 999 [2020-10-27 18:12:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:12:53,533 INFO L481 AbstractCegarLoop]: Abstraction has 7133 states and 7916 transitions. [2020-10-27 18:12:53,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:12:53,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 7916 transitions. [2020-10-27 18:12:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2020-10-27 18:12:53,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:12:53,549 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:12:53,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 18:12:53,550 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:12:53,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:12:53,551 INFO L82 PathProgramCache]: Analyzing trace with hash 912381648, now seen corresponding path program 1 times [2020-10-27 18:12:53,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:12:53,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221993368] [2020-10-27 18:12:53,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:12:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:56,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:58,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:58,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1044 [2020-10-27 18:12:58,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:12:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 18:12:58,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 908 [2020-10-27 18:12:58,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 18:12:58,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:58,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:12:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:58,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:58,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:59,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:12:59,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:59,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:12:59,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:59,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:59,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:59,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:12:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:59,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:59,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:12:59,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 18:12:59,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:59,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:59,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:12:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:59,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:59,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:12:59,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:59,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:12:59,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:59,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:59,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:59,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:59,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:12:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:59,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:59,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:59,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:12:59,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:59,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:12:59,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:59,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:59,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:59,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:59,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:59,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:12:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:59,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:59,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 18:12:59,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:12:59,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:59,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:59,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-27 18:12:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:59,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:59,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:59,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:12:59,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 18:12:59,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:59,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:59,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:59,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:59,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:59,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-27 18:12:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:59,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:59,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 18:12:59,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:59,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 18:12:59,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:12:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:59,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:12:59,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:59,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-27 18:12:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:59,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:59,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:59,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 18:12:59,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:59,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 18:12:59,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:12:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:12:59,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:12:59,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:12:59,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 894 [2020-10-27 18:12:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:12:59,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:12:59,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:12:59,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:12:59,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:12:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 18:12:59,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:12:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:12:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:12:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:12:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3124 backedges. 928 proven. 2 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2020-10-27 18:13:00,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221993368] [2020-10-27 18:13:00,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:13:00,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:13:00,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519981086] [2020-10-27 18:13:00,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:13:00,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:13:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:13:00,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:13:00,334 INFO L87 Difference]: Start difference. First operand 7133 states and 7916 transitions. Second operand 7 states. [2020-10-27 18:13:02,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:13:02,877 INFO L93 Difference]: Finished difference Result 14444 states and 16178 transitions. [2020-10-27 18:13:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:13:02,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1018 [2020-10-27 18:13:02,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:13:02,901 INFO L225 Difference]: With dead ends: 14444 [2020-10-27 18:13:02,901 INFO L226 Difference]: Without dead ends: 7683 [2020-10-27 18:13:02,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:13:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7683 states. [2020-10-27 18:13:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7683 to 7683. [2020-10-27 18:13:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7683 states. [2020-10-27 18:13:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 8454 transitions. [2020-10-27 18:13:03,148 INFO L78 Accepts]: Start accepts. Automaton has 7683 states and 8454 transitions. Word has length 1018 [2020-10-27 18:13:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:13:03,149 INFO L481 AbstractCegarLoop]: Abstraction has 7683 states and 8454 transitions. [2020-10-27 18:13:03,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:13:03,149 INFO L276 IsEmpty]: Start isEmpty. Operand 7683 states and 8454 transitions. [2020-10-27 18:13:03,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2020-10-27 18:13:03,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:13:03,168 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, 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, 6, 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, 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] [2020-10-27 18:13:03,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 18:13:03,168 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:13:03,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:13:03,169 INFO L82 PathProgramCache]: Analyzing trace with hash -331353868, now seen corresponding path program 1 times [2020-10-27 18:13:03,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:13:03,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525427624] [2020-10-27 18:13:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:13:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:05,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:08,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:08,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1121 [2020-10-27 18:13:08,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:13:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 18:13:08,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:13:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 985 [2020-10-27 18:13:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:13:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:08,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:13:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:08,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:08,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:08,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:13:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:13:08,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:08,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:13:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:08,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:08,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:13:08,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:08,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:13:08,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:08,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:08,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:08,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:13:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:08,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:08,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:13:08,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:13:08,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:08,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:08,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:08,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:13:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:08,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:08,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:08,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:13:08,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:08,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:13:08,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:08,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:13:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:09,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:09,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:13:09,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:09,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:13:09,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 18:13:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:09,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:09,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 18:13:09,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:09,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:13:09,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:09,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-27 18:13:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:09,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:09,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 18:13:09,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:09,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 18:13:09,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:09,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:09,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-27 18:13:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:09,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:09,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:09,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:13:09,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 18:13:09,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:13:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 18:13:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:09,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 18:13:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:09,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:09,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:09,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 18:13:09,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 18:13:09,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:13:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:13:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:13:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3470 backedges. 894 proven. 36 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2020-10-27 18:13:10,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525427624] [2020-10-27 18:13:10,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:13:10,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:13:10,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436180221] [2020-10-27 18:13:10,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:13:10,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:13:10,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:13:10,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:13:10,504 INFO L87 Difference]: Start difference. First operand 7683 states and 8454 transitions. Second operand 8 states. [2020-10-27 18:13:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:13:13,267 INFO L93 Difference]: Finished difference Result 10493 states and 11724 transitions. [2020-10-27 18:13:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:13:13,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1095 [2020-10-27 18:13:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:13:13,294 INFO L225 Difference]: With dead ends: 10493 [2020-10-27 18:13:13,295 INFO L226 Difference]: Without dead ends: 10271 [2020-10-27 18:13:13,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:13:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10271 states. [2020-10-27 18:13:13,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10271 to 9721. [2020-10-27 18:13:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9721 states. [2020-10-27 18:13:13,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9721 states to 9721 states and 10880 transitions. [2020-10-27 18:13:13,503 INFO L78 Accepts]: Start accepts. Automaton has 9721 states and 10880 transitions. Word has length 1095 [2020-10-27 18:13:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:13:13,505 INFO L481 AbstractCegarLoop]: Abstraction has 9721 states and 10880 transitions. [2020-10-27 18:13:13,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:13:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 9721 states and 10880 transitions. [2020-10-27 18:13:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1137 [2020-10-27 18:13:13,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:13:13,531 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, 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, 6, 6, 6, 6, 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, 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] [2020-10-27 18:13:13,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 18:13:13,531 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:13:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:13:13,532 INFO L82 PathProgramCache]: Analyzing trace with hash 9008932, now seen corresponding path program 1 times [2020-10-27 18:13:13,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:13:13,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297980514] [2020-10-27 18:13:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:13:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:13,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:15,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:15,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1162 [2020-10-27 18:13:15,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:15,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1328 [2020-10-27 18:13:15,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:13:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 985 [2020-10-27 18:13:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 18:13:15,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:15,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:13:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:15,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:15,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:15,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:13:15,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:13:15,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:15,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:13:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:15,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:15,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:15,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:13:15,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:13:15,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:15,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 18:13:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:15,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:15,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 18:13:15,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:15,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:13:15,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:15,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:15,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-27 18:13:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:15,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:15,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:15,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 18:13:15,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:13:15,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-27 18:13:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:15,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:15,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 18:13:15,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:15,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:13:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:15,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-27 18:13:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:15,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:15,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:15,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 18:13:15,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 18:13:15,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-27 18:13:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:15,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:15,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:15,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 18:13:15,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:13:15,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:13:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:13:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:15,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-27 18:13:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:15,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:15,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 18:13:15,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:15,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 18:13:15,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:13:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:13:15,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 18:13:15,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:16,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 18:13:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:16,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:16,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:13:16,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 18:13:16,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:13:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 18:13:16,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:13:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:13:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:13:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 18:13:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:13:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3748 backedges. 1206 proven. 2 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2020-10-27 18:13:17,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297980514] [2020-10-27 18:13:17,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:13:17,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:13:17,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778250054] [2020-10-27 18:13:17,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:13:17,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:13:17,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:13:17,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:13:17,131 INFO L87 Difference]: Start difference. First operand 9721 states and 10880 transitions. Second operand 8 states. [2020-10-27 18:13:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:13:20,727 INFO L93 Difference]: Finished difference Result 20530 states and 22979 transitions. [2020-10-27 18:13:20,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 18:13:20,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1136 [2020-10-27 18:13:20,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:13:20,749 INFO L225 Difference]: With dead ends: 20530 [2020-10-27 18:13:20,749 INFO L226 Difference]: Without dead ends: 10809 [2020-10-27 18:13:20,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-27 18:13:20,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10809 states. [2020-10-27 18:13:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10809 to 8979. [2020-10-27 18:13:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8979 states. [2020-10-27 18:13:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8979 states to 8979 states and 9657 transitions. [2020-10-27 18:13:20,949 INFO L78 Accepts]: Start accepts. Automaton has 8979 states and 9657 transitions. Word has length 1136 [2020-10-27 18:13:20,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:13:20,950 INFO L481 AbstractCegarLoop]: Abstraction has 8979 states and 9657 transitions. [2020-10-27 18:13:20,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:13:20,950 INFO L276 IsEmpty]: Start isEmpty. Operand 8979 states and 9657 transitions. [2020-10-27 18:13:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1149 [2020-10-27 18:13:20,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:13:20,972 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:13:20,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 18:13:20,974 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:13:20,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:13:20,975 INFO L82 PathProgramCache]: Analyzing trace with hash -708085025, now seen corresponding path program 1 times [2020-10-27 18:13:20,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:13:20,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361942695] [2020-10-27 18:13:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:13:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:13:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:21,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:21,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:13:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking...