/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/Problem16_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:44:04,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:44:04,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:44:04,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:44:04,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:44:04,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:44:04,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:44:04,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:44:04,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:44:04,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:44:04,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:44:04,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:44:04,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:44:04,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:44:04,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:44:04,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:44:04,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:44:04,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:44:04,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:44:04,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:44:04,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:44:04,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:44:04,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:44:04,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:44:04,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:44:04,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:44:04,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:44:04,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:44:04,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:44:04,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:44:04,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:44:04,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:44:04,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:44:04,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:44:04,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:44:04,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:44:04,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:44:04,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:44:04,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:44:04,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:44:04,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:44:04,935 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 18:44:04,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:44:04,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:44:04,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:44:04,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:44:04,998 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:44:04,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:44:04,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:44:04,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:44:04,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:44:04,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:44:05,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:44:05,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:44:05,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:44:05,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:44:05,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:44:05,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:44:05,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:44:05,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:44:05,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:44:05,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:44:05,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:44:05,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:44:05,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:44:05,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:44:05,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:44:05,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:44:05,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:44:05,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:44:05,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:44:05,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:44:05,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:44:05,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:44:05,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:44:05,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:44:05,510 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:44:05,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label44.c [2020-10-27 18:44:05,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e11f933c/6c17bfdbf63d4677908ac0e3b60904c2/FLAGc2314aac9 [2020-10-27 18:44:06,453 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:44:06,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label44.c [2020-10-27 18:44:06,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e11f933c/6c17bfdbf63d4677908ac0e3b60904c2/FLAGc2314aac9 [2020-10-27 18:44:06,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e11f933c/6c17bfdbf63d4677908ac0e3b60904c2 [2020-10-27 18:44:06,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:44:06,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:44:06,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:44:06,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:44:06,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:44:06,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:44:06" (1/1) ... [2020-10-27 18:44:06,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de45a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:06, skipping insertion in model container [2020-10-27 18:44:06,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:44:06" (1/1) ... [2020-10-27 18:44:06,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:44:06,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:44:07,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:44:07,576 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:44:07,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:44:07,869 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:44:07,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:07 WrapperNode [2020-10-27 18:44:07,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:44:07,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:44:07,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:44:07,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:44:07,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:07" (1/1) ... [2020-10-27 18:44:07,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:07" (1/1) ... [2020-10-27 18:44:07,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:07" (1/1) ... [2020-10-27 18:44:07,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:07" (1/1) ... [2020-10-27 18:44:08,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:07" (1/1) ... [2020-10-27 18:44:08,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:07" (1/1) ... [2020-10-27 18:44:08,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:07" (1/1) ... [2020-10-27 18:44:08,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:44:08,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:44:08,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:44:08,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:44:08,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:07" (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 18:44:08,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:44:08,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:44:08,181 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:44:08,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:44:08,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:44:08,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:44:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:44:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:44:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:44:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:44:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:44:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:44:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:44:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:44:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:44:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:44:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:44:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:44:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:44:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:44:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:44:10,685 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:44:10,685 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:44:10,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:44:10 BoogieIcfgContainer [2020-10-27 18:44:10,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:44:10,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:44:10,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:44:10,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:44:10,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:44:06" (1/3) ... [2020-10-27 18:44:10,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6b1fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:44:10, skipping insertion in model container [2020-10-27 18:44:10,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:44:07" (2/3) ... [2020-10-27 18:44:10,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6b1fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:44:10, skipping insertion in model container [2020-10-27 18:44:10,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:44:10" (3/3) ... [2020-10-27 18:44:10,703 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label44.c [2020-10-27 18:44:10,721 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:44:10,727 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:44:10,742 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:44:10,787 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:44:10,787 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:44:10,787 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:44:10,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:44:10,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:44:10,788 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:44:10,788 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:44:10,788 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:44:10,830 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 18:44:10,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 18:44:10,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:10,839 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] [2020-10-27 18:44:10,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:10,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1724332564, now seen corresponding path program 1 times [2020-10-27 18:44:10,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:10,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794869010] [2020-10-27 18:44:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:11,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:11,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 18:44:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-27 18:44:11,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:44:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:44:11,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 18:44:11,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:44:11,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:11,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:11,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:11,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:11,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:44:11,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:44:11,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:11,960 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 18:44:11,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794869010] [2020-10-27 18:44:11,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:44:11,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 18:44:11,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406431128] [2020-10-27 18:44:11,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:44:11,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:11,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:44:11,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:44:11,995 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-27 18:44:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:19,451 INFO L93 Difference]: Finished difference Result 1520 states and 2855 transitions. [2020-10-27 18:44:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:44:19,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-27 18:44:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:19,489 INFO L225 Difference]: With dead ends: 1520 [2020-10-27 18:44:19,490 INFO L226 Difference]: Without dead ends: 1039 [2020-10-27 18:44:19,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:44:19,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-27 18:44:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1035. [2020-10-27 18:44:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-10-27 18:44:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1486 transitions. [2020-10-27 18:44:19,679 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1486 transitions. Word has length 37 [2020-10-27 18:44:19,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:19,680 INFO L481 AbstractCegarLoop]: Abstraction has 1035 states and 1486 transitions. [2020-10-27 18:44:19,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:44:19,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1486 transitions. [2020-10-27 18:44:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 18:44:19,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:19,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:44:19,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:44:19,687 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:19,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1346240627, now seen corresponding path program 1 times [2020-10-27 18:44:19,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:19,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492867024] [2020-10-27 18:44:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:20,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:21,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:21,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 18:44:21,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:44:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1317 [2020-10-27 18:44:21,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-27 18:44:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 18:44:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:44:21,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:21,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:21,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:21,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:21,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 18:44:21,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:21,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:21,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:21,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:21,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:21,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:21,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:21,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:21,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 18:44:21,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:21,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 18:44:21,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:21,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:44:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:44:21,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492867024] [2020-10-27 18:44:21,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:21,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:44:21,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367160927] [2020-10-27 18:44:21,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:44:21,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:21,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:44:21,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:44:21,455 INFO L87 Difference]: Start difference. First operand 1035 states and 1486 transitions. Second operand 6 states. [2020-10-27 18:44:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:28,584 INFO L93 Difference]: Finished difference Result 4108 states and 6002 transitions. [2020-10-27 18:44:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:44:28,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-27 18:44:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:28,610 INFO L225 Difference]: With dead ends: 4108 [2020-10-27 18:44:28,611 INFO L226 Difference]: Without dead ends: 3079 [2020-10-27 18:44:28,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:44:28,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2020-10-27 18:44:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 3075. [2020-10-27 18:44:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3075 states. [2020-10-27 18:44:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4104 transitions. [2020-10-27 18:44:28,727 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4104 transitions. Word has length 113 [2020-10-27 18:44:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:28,728 INFO L481 AbstractCegarLoop]: Abstraction has 3075 states and 4104 transitions. [2020-10-27 18:44:28,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:44:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4104 transitions. [2020-10-27 18:44:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-27 18:44:28,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:28,735 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:44:28,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:44:28,735 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:28,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:28,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1519606626, now seen corresponding path program 1 times [2020-10-27 18:44:28,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:28,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876969262] [2020-10-27 18:44:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:31,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:31,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 18:44:31,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:44:31,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2821 [2020-10-27 18:44:31,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 18:44:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:44:31,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:31,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:31,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:31,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:31,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:31,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:44:31,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:31,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:31,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:31,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:31,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:31,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:44:31,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 18:44:31,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:44:31,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:31,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:44:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:32,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:32,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:44:32,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 18:44:32,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:32,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:44:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:44:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 18:44:32,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876969262] [2020-10-27 18:44:32,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:32,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:44:32,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878228769] [2020-10-27 18:44:32,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:44:32,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:32,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:44:32,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:44:32,191 INFO L87 Difference]: Start difference. First operand 3075 states and 4104 transitions. Second operand 7 states. [2020-10-27 18:44:38,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:38,258 INFO L93 Difference]: Finished difference Result 7232 states and 9997 transitions. [2020-10-27 18:44:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:44:38,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-10-27 18:44:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:38,301 INFO L225 Difference]: With dead ends: 7232 [2020-10-27 18:44:38,301 INFO L226 Difference]: Without dead ends: 4163 [2020-10-27 18:44:38,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:44:38,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2020-10-27 18:44:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 4134. [2020-10-27 18:44:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4134 states. [2020-10-27 18:44:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 5364 transitions. [2020-10-27 18:44:38,453 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 5364 transitions. Word has length 200 [2020-10-27 18:44:38,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:38,454 INFO L481 AbstractCegarLoop]: Abstraction has 4134 states and 5364 transitions. [2020-10-27 18:44:38,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:44:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 5364 transitions. [2020-10-27 18:44:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-27 18:44:38,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:38,466 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 18:44:38,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:44:38,466 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:38,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:38,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1881475782, now seen corresponding path program 1 times [2020-10-27 18:44:38,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:38,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236220212] [2020-10-27 18:44:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:38,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:38,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:43,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:43,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-27 18:44:43,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:44:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 18:44:43,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:43,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:44:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:44:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 18:44:43,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:43,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:43,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:43,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:44:43,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:43,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:43,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:43,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:43,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:43,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:44:43,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:43,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:44:43,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:43,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:43,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:43,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:43,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:44:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:43,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:43,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:44:43,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 18:44:43,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:44:43,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:43,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:44:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:44,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:44,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:44:44,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:44,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-27 18:44:44,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:44,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:44:44,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 18:44:44,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-27 18:44:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:44,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:44,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:44,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:44:44,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 18:44:44,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 18:44:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:44,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:44,570 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 297 proven. 71 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-10-27 18:44:44,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236220212] [2020-10-27 18:44:44,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:44,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:44:44,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941150029] [2020-10-27 18:44:44,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:44:44,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:44,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:44:44,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:44:44,574 INFO L87 Difference]: Start difference. First operand 4134 states and 5364 transitions. Second operand 7 states. [2020-10-27 18:44:50,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:44:50,884 INFO L93 Difference]: Finished difference Result 9681 states and 12746 transitions. [2020-10-27 18:44:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:44:50,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-27 18:44:50,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:44:50,921 INFO L225 Difference]: With dead ends: 9681 [2020-10-27 18:44:50,921 INFO L226 Difference]: Without dead ends: 5553 [2020-10-27 18:44:50,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 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 18:44:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5553 states. [2020-10-27 18:44:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5553 to 5527. [2020-10-27 18:44:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5527 states. [2020-10-27 18:44:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 6973 transitions. [2020-10-27 18:44:51,158 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 6973 transitions. Word has length 393 [2020-10-27 18:44:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:44:51,159 INFO L481 AbstractCegarLoop]: Abstraction has 5527 states and 6973 transitions. [2020-10-27 18:44:51,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:44:51,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 6973 transitions. [2020-10-27 18:44:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-27 18:44:51,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:44:51,172 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:44:51,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:44:51,172 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:44:51,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:44:51,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1098147960, now seen corresponding path program 1 times [2020-10-27 18:44:51,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:44:51,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245409766] [2020-10-27 18:44:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:44:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:52,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:55,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:55,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-27 18:44:55,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:44:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4717 [2020-10-27 18:44:55,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:44:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:44:55,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 18:44:55,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:44:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:56,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:56,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:44:56,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:56,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:44:56,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:44:56,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:44:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:56,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:56,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:44:56,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:56,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:44:56,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:44:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:44:56,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:44:56,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:44:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:44:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:44:56,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:44:56,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:44:56,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:44:56,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-27 18:44:56,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:44:56,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:44:56,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:44:56,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:44:56,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:44:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-27 18:44:57,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245409766] [2020-10-27 18:44:57,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:44:57,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:44:57,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144269193] [2020-10-27 18:44:57,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:44:57,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:44:57,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:44:57,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:44:57,108 INFO L87 Difference]: Start difference. First operand 5527 states and 6973 transitions. Second operand 5 states. [2020-10-27 18:45:02,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:02,131 INFO L93 Difference]: Finished difference Result 13774 states and 17695 transitions. [2020-10-27 18:45:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:45:02,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 401 [2020-10-27 18:45:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:02,176 INFO L225 Difference]: With dead ends: 13774 [2020-10-27 18:45:02,176 INFO L226 Difference]: Without dead ends: 8253 [2020-10-27 18:45:02,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 18:45:02,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8253 states. [2020-10-27 18:45:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8253 to 7234. [2020-10-27 18:45:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7234 states. [2020-10-27 18:45:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 9171 transitions. [2020-10-27 18:45:02,434 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 9171 transitions. Word has length 401 [2020-10-27 18:45:02,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:02,438 INFO L481 AbstractCegarLoop]: Abstraction has 7234 states and 9171 transitions. [2020-10-27 18:45:02,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:45:02,438 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 9171 transitions. [2020-10-27 18:45:02,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-27 18:45:02,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:02,457 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:02,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:45:02,457 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:02,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:02,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1519399185, now seen corresponding path program 1 times [2020-10-27 18:45:02,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:02,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203658671] [2020-10-27 18:45:02,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:04,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:05,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:06,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:07,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:07,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-10-27 18:45:07,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:45:07,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 18:45:07,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:45:07,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:45:07,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:07,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:07,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:07,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:07,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:45:07,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:45:07,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:07,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:07,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:07,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:45:07,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:07,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:45:07,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:07,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:45:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:45:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:08,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:08,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:45:08,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-27 18:45:08,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:08,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:08,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:45:08,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:08,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:45:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:08,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:08,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:08,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:45:08,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:08,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 18:45:08,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:45:08,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:45:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:45:08,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203658671] [2020-10-27 18:45:08,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:08,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:45:08,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977104561] [2020-10-27 18:45:08,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:45:08,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:08,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:45:08,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:45:08,746 INFO L87 Difference]: Start difference. First operand 7234 states and 9171 transitions. Second operand 7 states. [2020-10-27 18:45:15,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:15,251 INFO L93 Difference]: Finished difference Result 15880 states and 20578 transitions. [2020-10-27 18:45:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:45:15,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 473 [2020-10-27 18:45:15,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:15,314 INFO L225 Difference]: With dead ends: 15880 [2020-10-27 18:45:15,314 INFO L226 Difference]: Without dead ends: 8652 [2020-10-27 18:45:15,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 18:45:15,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8652 states. [2020-10-27 18:45:15,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8652 to 7591. [2020-10-27 18:45:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7591 states. [2020-10-27 18:45:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 9496 transitions. [2020-10-27 18:45:15,567 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 9496 transitions. Word has length 473 [2020-10-27 18:45:15,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:15,568 INFO L481 AbstractCegarLoop]: Abstraction has 7591 states and 9496 transitions. [2020-10-27 18:45:15,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:45:15,569 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 9496 transitions. [2020-10-27 18:45:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-27 18:45:15,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:15,590 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:45:15,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:45:15,591 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:15,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:15,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1796011507, now seen corresponding path program 1 times [2020-10-27 18:45:15,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:15,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180324977] [2020-10-27 18:45:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:18,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:19,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:20,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:20,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-27 18:45:20,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:45:20,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 18:45:20,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:45:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 18:45:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:20,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:20,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:20,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:20,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:20,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:20,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:45:20,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:20,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:20,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:20,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:20,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:20,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:20,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:45:20,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 18:45:20,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:20,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:20,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:45:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:21,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:21,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:45:21,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:21,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-27 18:45:21,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:45:21,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:21,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:45:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:21,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:21,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:45:21,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 18:45:21,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 18:45:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-27 18:45:21,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180324977] [2020-10-27 18:45:21,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:21,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:45:21,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323253108] [2020-10-27 18:45:21,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:45:21,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:21,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:45:21,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:45:21,700 INFO L87 Difference]: Start difference. First operand 7591 states and 9496 transitions. Second operand 7 states. [2020-10-27 18:45:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:27,322 INFO L93 Difference]: Finished difference Result 15202 states and 19074 transitions. [2020-10-27 18:45:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:45:27,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 502 [2020-10-27 18:45:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:27,348 INFO L225 Difference]: With dead ends: 15202 [2020-10-27 18:45:27,349 INFO L226 Difference]: Without dead ends: 7617 [2020-10-27 18:45:27,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:45:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7617 states. [2020-10-27 18:45:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7617 to 7591. [2020-10-27 18:45:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7591 states. [2020-10-27 18:45:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 9079 transitions. [2020-10-27 18:45:27,533 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 9079 transitions. Word has length 502 [2020-10-27 18:45:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:27,534 INFO L481 AbstractCegarLoop]: Abstraction has 7591 states and 9079 transitions. [2020-10-27 18:45:27,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:45:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 9079 transitions. [2020-10-27 18:45:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2020-10-27 18:45:27,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:27,555 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:45:27,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:45:27,555 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:27,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1442201206, now seen corresponding path program 1 times [2020-10-27 18:45:27,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:27,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82236910] [2020-10-27 18:45:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:27,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:28,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:30,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:30,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:32,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:32,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 706 [2020-10-27 18:45:32,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:45:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 18:45:32,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:32,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:32,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 18:45:32,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:45:32,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:32,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:32,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:32,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:32,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 18:45:32,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:32,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:32,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:45:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:32,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:32,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:45:32,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:45:32,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:45:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:33,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:33,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:33,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:45:33,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:33,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-27 18:45:33,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-27 18:45:33,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:33,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:45:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:33,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:33,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:45:33,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:33,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 18:45:33,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:33,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:33,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:33,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:45:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:34,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-10-27 18:45:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:34,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:34,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:45:34,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:45:34,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 18:45:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 429 proven. 71 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-27 18:45:34,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82236910] [2020-10-27 18:45:34,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:34,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:45:34,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136820976] [2020-10-27 18:45:34,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:45:34,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:34,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:45:34,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:45:34,821 INFO L87 Difference]: Start difference. First operand 7591 states and 9079 transitions. Second operand 8 states. [2020-10-27 18:45:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:45:41,339 INFO L93 Difference]: Finished difference Result 15555 states and 18656 transitions. [2020-10-27 18:45:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:45:41,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 688 [2020-10-27 18:45:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:45:41,369 INFO L225 Difference]: With dead ends: 15555 [2020-10-27 18:45:41,369 INFO L226 Difference]: Without dead ends: 7970 [2020-10-27 18:45:41,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:45:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7970 states. [2020-10-27 18:45:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7970 to 7609. [2020-10-27 18:45:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7609 states. [2020-10-27 18:45:41,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7609 states to 7609 states and 9116 transitions. [2020-10-27 18:45:41,550 INFO L78 Accepts]: Start accepts. Automaton has 7609 states and 9116 transitions. Word has length 688 [2020-10-27 18:45:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:45:41,551 INFO L481 AbstractCegarLoop]: Abstraction has 7609 states and 9116 transitions. [2020-10-27 18:45:41,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:45:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 7609 states and 9116 transitions. [2020-10-27 18:45:41,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2020-10-27 18:45:41,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:45:41,572 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:45:41,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:45:41,573 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:45:41,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:45:41,573 INFO L82 PathProgramCache]: Analyzing trace with hash 490033760, now seen corresponding path program 1 times [2020-10-27 18:45:41,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:45:41,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375231648] [2020-10-27 18:45:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:45:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:41,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:42,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:42,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:44,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:46,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:46,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-27 18:45:46,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:45:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 18:45:46,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 488 [2020-10-27 18:45:46,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 18:45:46,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:46,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:45:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:46,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:46,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:46,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:45:46,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:45:46,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:46,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:45:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:46,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:46,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:46,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:45:46,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 18:45:46,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:46,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:45:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:46,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:46,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:46,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:45:46,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:46,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:45:46,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:46,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:47,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:45:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:47,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:47,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 18:45:47,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 18:45:47,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:47,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:47,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-27 18:45:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:47,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:47,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:45:47,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 18:45:47,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:45:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:45:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:45:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:47,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-10-27 18:45:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:47,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:47,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:47,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:45:47,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:47,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 18:45:47,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:45:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:45:47,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:45:47,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:47,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 695 [2020-10-27 18:45:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:45:47,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:45:47,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:45:47,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:45:47,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:45:47,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:45:47,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:45:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:45:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 18:45:47,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:45:47,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:45:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1547 backedges. 665 proven. 71 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2020-10-27 18:45:48,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375231648] [2020-10-27 18:45:48,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:45:48,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:45:48,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006677550] [2020-10-27 18:45:48,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:45:48,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:45:48,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:45:48,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:45:48,583 INFO L87 Difference]: Start difference. First operand 7609 states and 9116 transitions. Second operand 7 states. [2020-10-27 18:46:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:00,301 INFO L93 Difference]: Finished difference Result 17976 states and 21450 transitions. [2020-10-27 18:46:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:46:00,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 796 [2020-10-27 18:46:00,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:00,354 INFO L225 Difference]: With dead ends: 17976 [2020-10-27 18:46:00,354 INFO L226 Difference]: Without dead ends: 10373 [2020-10-27 18:46:00,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 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 18:46:00,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10373 states. [2020-10-27 18:46:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10373 to 10021. [2020-10-27 18:46:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10021 states. [2020-10-27 18:46:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10021 states to 10021 states and 11856 transitions. [2020-10-27 18:46:00,581 INFO L78 Accepts]: Start accepts. Automaton has 10021 states and 11856 transitions. Word has length 796 [2020-10-27 18:46:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:00,583 INFO L481 AbstractCegarLoop]: Abstraction has 10021 states and 11856 transitions. [2020-10-27 18:46:00,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 10021 states and 11856 transitions. [2020-10-27 18:46:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-27 18:46:00,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:00,612 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:00,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:46:00,612 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:00,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:00,614 INFO L82 PathProgramCache]: Analyzing trace with hash -622688895, now seen corresponding path program 1 times [2020-10-27 18:46:00,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:00,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746289971] [2020-10-27 18:46:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:01,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:03,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:05,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:05,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 820 [2020-10-27 18:46:05,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:46:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 18:46:05,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 18:46:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 18:46:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 607 [2020-10-27 18:46:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:05,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:05,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:05,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:05,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:46:05,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:05,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:06,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 18:46:06,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 18:46:06,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 18:46:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:06,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 18:46:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:06,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:06,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:06,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:46:06,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-27 18:46:06,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:46:06,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:06,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2020-10-27 18:46:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:46:06,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:46:06,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 18:46:06,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 18:46:06,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:06,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 18:46:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:07,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:07,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:07,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:46:07,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-27 18:46:07,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:07,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 18:46:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-27 18:46:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:07,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:07,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:46:07,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:07,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 18:46:07,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:07,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:07,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 18:46:07,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:07,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 421 proven. 528 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-27 18:46:08,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746289971] [2020-10-27 18:46:08,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:08,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 18:46:08,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114161306] [2020-10-27 18:46:08,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 18:46:08,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:08,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 18:46:08,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:46:08,095 INFO L87 Difference]: Start difference. First operand 10021 states and 11856 transitions. Second operand 9 states. [2020-10-27 18:46:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:14,046 INFO L93 Difference]: Finished difference Result 23802 states and 28081 transitions. [2020-10-27 18:46:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:46:14,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 800 [2020-10-27 18:46:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:14,078 INFO L225 Difference]: With dead ends: 23802 [2020-10-27 18:46:14,078 INFO L226 Difference]: Without dead ends: 9631 [2020-10-27 18:46:14,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-27 18:46:14,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9631 states. [2020-10-27 18:46:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9631 to 7894. [2020-10-27 18:46:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7894 states. [2020-10-27 18:46:14,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7894 states to 7894 states and 8330 transitions. [2020-10-27 18:46:14,272 INFO L78 Accepts]: Start accepts. Automaton has 7894 states and 8330 transitions. Word has length 800 [2020-10-27 18:46:14,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:14,273 INFO L481 AbstractCegarLoop]: Abstraction has 7894 states and 8330 transitions. [2020-10-27 18:46:14,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 18:46:14,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7894 states and 8330 transitions. [2020-10-27 18:46:14,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1154 [2020-10-27 18:46:14,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:14,303 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 18:46:14,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:46:14,303 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:14,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:14,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1991204316, now seen corresponding path program 1 times [2020-10-27 18:46:14,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:14,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499194102] [2020-10-27 18:46:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:17,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:19,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:19,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1175 [2020-10-27 18:46:19,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:46:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-27 18:46:19,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 456 [2020-10-27 18:46:19,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:46:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:19,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:19,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:19,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:19,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:19,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:46:19,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:19,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:19,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:19,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:19,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:19,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:20,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:20,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:46:20,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:20,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 18:46:20,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:20,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:20,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:46:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:20,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:20,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:46:20,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:20,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 18:46:20,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 18:46:20,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:20,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-27 18:46:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:20,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:20,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:20,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:20,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-27 18:46:20,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:46:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2020-10-27 18:46:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:20,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:20,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:46:20,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:46:20,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 18:46:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:20,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 837 [2020-10-27 18:46:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:21,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:21,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:46:21,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:21,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 18:46:21,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:46:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:21,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:21,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-27 18:46:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:21,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:21,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:46:21,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:46:21,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 18:46:21,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:21,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2246 backedges. 641 proven. 392 refuted. 0 times theorem prover too weak. 1213 trivial. 0 not checked. [2020-10-27 18:46:22,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499194102] [2020-10-27 18:46:22,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:22,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:46:22,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799743994] [2020-10-27 18:46:22,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:46:22,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:22,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:46:22,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:46:22,186 INFO L87 Difference]: Start difference. First operand 7894 states and 8330 transitions. Second operand 7 states. [2020-10-27 18:46:26,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:26,825 INFO L93 Difference]: Finished difference Result 15802 states and 16684 transitions. [2020-10-27 18:46:26,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:46:26,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1153 [2020-10-27 18:46:26,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:26,849 INFO L225 Difference]: With dead ends: 15802 [2020-10-27 18:46:26,850 INFO L226 Difference]: Without dead ends: 7914 [2020-10-27 18:46:26,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:46:26,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2020-10-27 18:46:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 7896. [2020-10-27 18:46:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7896 states. [2020-10-27 18:46:26,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 8328 transitions. [2020-10-27 18:46:26,991 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 8328 transitions. Word has length 1153 [2020-10-27 18:46:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:26,992 INFO L481 AbstractCegarLoop]: Abstraction has 7896 states and 8328 transitions. [2020-10-27 18:46:26,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:26,993 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 8328 transitions. [2020-10-27 18:46:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1172 [2020-10-27 18:46:27,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:27,021 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:27,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:46:27,021 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:27,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:27,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1793260215, now seen corresponding path program 1 times [2020-10-27 18:46:27,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:27,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509220948] [2020-10-27 18:46:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:27,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:27,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:32,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:32,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1195 [2020-10-27 18:46:32,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 18:46:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 18:46:32,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 18:46:32,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:46:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:32,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:32,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:32,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:46:32,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:32,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:32,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:32,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:32,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:46:32,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:32,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 18:46:32,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:32,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:32,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:32,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:46:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:32,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:32,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:46:32,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:32,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:46:32,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:32,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-27 18:46:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:32,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:32,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:46:32,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 18:46:32,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 18:46:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:32,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 18:46:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:33,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:33,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:33,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-27 18:46:33,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:33,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:46:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:33,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2020-10-27 18:46:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:33,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:33,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:46:33,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 18:46:33,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 18:46:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:33,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2020-10-27 18:46:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:33,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:33,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:33,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:46:33,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:33,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 18:46:33,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:46:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:33,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:33,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2020-10-27 18:46:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:33,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:33,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:46:33,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:33,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:46:33,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 18:46:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:33,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 702 proven. 392 refuted. 0 times theorem prover too weak. 1442 trivial. 0 not checked. [2020-10-27 18:46:35,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509220948] [2020-10-27 18:46:35,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:35,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:46:35,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989057530] [2020-10-27 18:46:35,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:46:35,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:35,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:46:35,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:46:35,241 INFO L87 Difference]: Start difference. First operand 7896 states and 8328 transitions. Second operand 7 states. [2020-10-27 18:46:40,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:40,151 INFO L93 Difference]: Finished difference Result 16849 states and 17823 transitions. [2020-10-27 18:46:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 18:46:40,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1171 [2020-10-27 18:46:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:40,177 INFO L225 Difference]: With dead ends: 16849 [2020-10-27 18:46:40,177 INFO L226 Difference]: Without dead ends: 8959 [2020-10-27 18:46:40,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 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 18:46:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8959 states. [2020-10-27 18:46:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8959 to 8917. [2020-10-27 18:46:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8917 states. [2020-10-27 18:46:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8917 states to 8917 states and 9367 transitions. [2020-10-27 18:46:40,341 INFO L78 Accepts]: Start accepts. Automaton has 8917 states and 9367 transitions. Word has length 1171 [2020-10-27 18:46:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:40,343 INFO L481 AbstractCegarLoop]: Abstraction has 8917 states and 9367 transitions. [2020-10-27 18:46:40,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 8917 states and 9367 transitions. [2020-10-27 18:46:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1290 [2020-10-27 18:46:40,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:40,383 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 18:46:40,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:46:40,383 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:40,384 INFO L82 PathProgramCache]: Analyzing trace with hash -2130045003, now seen corresponding path program 1 times [2020-10-27 18:46:40,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:40,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975230199] [2020-10-27 18:46:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:40,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:45,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:45,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1313 [2020-10-27 18:46:45,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:46:45,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 18:46:45,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:45,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:45,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 594 [2020-10-27 18:46:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 18:46:45,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:46:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:45,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:45,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:46:45,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:45,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:46:45,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:45,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:45,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:46:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:45,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:45,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:46:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 18:46:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:45,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:45,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:46,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:46:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:46,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:46,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:46:46,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:46:46,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-27 18:46:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:46,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:46,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:46,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 18:46:46,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:46,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 18:46:46,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:46:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:46:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-27 18:46:46,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:46,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2020-10-27 18:46:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:46,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:46,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:46:46,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-27 18:46:46,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:46:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 18:46:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:47,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 861 [2020-10-27 18:46:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:47,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:47,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:47,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:46:47,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:47,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 18:46:47,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 18:46:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:47,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:47,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 973 [2020-10-27 18:46:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:47,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:47,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:46:47,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 18:46:47,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:46:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:47,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1188 [2020-10-27 18:46:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:47,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:47,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:47,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:46:47,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:46:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:46:47,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:46:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 18:46:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:46:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:46:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2830 backedges. 820 proven. 392 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2020-10-27 18:46:48,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975230199] [2020-10-27 18:46:48,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:46:48,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:46:48,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382396410] [2020-10-27 18:46:48,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:46:48,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:46:48,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:46:48,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:46:48,683 INFO L87 Difference]: Start difference. First operand 8917 states and 9367 transitions. Second operand 7 states. [2020-10-27 18:46:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:46:54,314 INFO L93 Difference]: Finished difference Result 21573 states and 22754 transitions. [2020-10-27 18:46:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:46:54,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1289 [2020-10-27 18:46:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:46:54,350 INFO L225 Difference]: With dead ends: 21573 [2020-10-27 18:46:54,350 INFO L226 Difference]: Without dead ends: 12662 [2020-10-27 18:46:54,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:46:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12662 states. [2020-10-27 18:46:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12662 to 12309. [2020-10-27 18:46:54,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12309 states. [2020-10-27 18:46:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12309 states to 12309 states and 12964 transitions. [2020-10-27 18:46:54,569 INFO L78 Accepts]: Start accepts. Automaton has 12309 states and 12964 transitions. Word has length 1289 [2020-10-27 18:46:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:46:54,570 INFO L481 AbstractCegarLoop]: Abstraction has 12309 states and 12964 transitions. [2020-10-27 18:46:54,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:46:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 12309 states and 12964 transitions. [2020-10-27 18:46:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1391 [2020-10-27 18:46:54,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:46:54,609 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:54,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 18:46:54,609 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:46:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:46:54,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1089323320, now seen corresponding path program 1 times [2020-10-27 18:46:54,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:46:54,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179770229] [2020-10-27 18:46:54,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:46:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:46:54,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:55,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:55,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:55,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:46:59,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:46:59,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1416 [2020-10-27 18:46:59,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:46:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-27 18:46:59,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:46:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:46:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 732 [2020-10-27 18:46:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-27 18:46:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:00,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:00,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:00,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:00,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:00,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:00,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:47:00,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:00,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:00,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:00,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:00,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:00,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:47:00,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:47:00,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:00,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:00,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:00,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-27 18:47:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:00,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:00,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:47:00,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:47:00,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:00,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:00,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:00,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-27 18:47:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:00,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:00,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 18:47:00,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:00,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:47:00,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:00,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:00,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:00,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:00,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 18:47:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:00,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:00,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 18:47:00,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 18:47:00,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:00,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2020-10-27 18:47:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:00,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:00,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:00,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 18:47:00,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:00,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 18:47:00,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-27 18:47:00,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-27 18:47:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:00,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:00,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:00,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-27 18:47:00,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-27 18:47:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-27 18:47:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-27 18:47:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:01,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:01,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:01,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 18:47:01,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:01,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 18:47:01,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 18:47:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:01,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:01,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1260 [2020-10-27 18:47:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:01,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:01,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:01,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:47:01,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:47:01,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 18:47:01,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3623 backedges. 991 proven. 351 refuted. 0 times theorem prover too weak. 2281 trivial. 0 not checked. [2020-10-27 18:47:02,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179770229] [2020-10-27 18:47:02,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:02,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:02,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151727409] [2020-10-27 18:47:02,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:02,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:02,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:02,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:02,436 INFO L87 Difference]: Start difference. First operand 12309 states and 12964 transitions. Second operand 7 states. [2020-10-27 18:47:07,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:07,641 INFO L93 Difference]: Finished difference Result 27339 states and 28907 transitions. [2020-10-27 18:47:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:47:07,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1390 [2020-10-27 18:47:07,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:07,687 INFO L225 Difference]: With dead ends: 27339 [2020-10-27 18:47:07,687 INFO L226 Difference]: Without dead ends: 15373 [2020-10-27 18:47:07,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:47:07,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15373 states. [2020-10-27 18:47:07,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15373 to 15360. [2020-10-27 18:47:07,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15360 states. [2020-10-27 18:47:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15360 states to 15360 states and 16158 transitions. [2020-10-27 18:47:07,988 INFO L78 Accepts]: Start accepts. Automaton has 15360 states and 16158 transitions. Word has length 1390 [2020-10-27 18:47:07,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:07,989 INFO L481 AbstractCegarLoop]: Abstraction has 15360 states and 16158 transitions. [2020-10-27 18:47:07,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:47:07,989 INFO L276 IsEmpty]: Start isEmpty. Operand 15360 states and 16158 transitions. [2020-10-27 18:47:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1640 [2020-10-27 18:47:08,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:08,035 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:47:08,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 18:47:08,035 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:08,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1651834693, now seen corresponding path program 1 times [2020-10-27 18:47:08,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:08,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008590223] [2020-10-27 18:47:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:08,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:08,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:09,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:13,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:13,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1667 [2020-10-27 18:47:13,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:47:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-27 18:47:13,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 696 [2020-10-27 18:47:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-27 18:47:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:13,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:13,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:13,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:13,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:47:13,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:13,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:13,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:13,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:13,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:13,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:13,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:13,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:47:13,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:47:13,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:13,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:13,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:47:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:13,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:13,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:13,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:47:13,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:13,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 18:47:13,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:13,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:13,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:13,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:13,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:13,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 18:47:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:13,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:13,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:47:13,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 18:47:13,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-27 18:47:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:13,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:13,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:13,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 18:47:13,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 18:47:13,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 18:47:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2020-10-27 18:47:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:14,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:14,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:47:14,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:14,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-27 18:47:14,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:14,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:14,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-27 18:47:14,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 938 [2020-10-27 18:47:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:14,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:14,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:14,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:14,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:14,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 18:47:14,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 18:47:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:14,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:14,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1211 [2020-10-27 18:47:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:14,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:14,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:14,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:47:14,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:47:14,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 18:47:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1323 [2020-10-27 18:47:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:14,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:14,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:47:14,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 18:47:14,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-27 18:47:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:14,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:14,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1538 [2020-10-27 18:47:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:15,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:15,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:15,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:47:15,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:15,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 18:47:15,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:15,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 18:47:15,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:15,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4913 backedges. 1008 proven. 639 refuted. 0 times theorem prover too weak. 3266 trivial. 0 not checked. [2020-10-27 18:47:16,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008590223] [2020-10-27 18:47:16,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:16,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:16,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539507669] [2020-10-27 18:47:16,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:16,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:16,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:16,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:16,834 INFO L87 Difference]: Start difference. First operand 15360 states and 16158 transitions. Second operand 7 states. [2020-10-27 18:47:22,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:47:22,061 INFO L93 Difference]: Finished difference Result 31741 states and 33421 transitions. [2020-10-27 18:47:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 18:47:22,062 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1639 [2020-10-27 18:47:22,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:47:22,100 INFO L225 Difference]: With dead ends: 31741 [2020-10-27 18:47:22,101 INFO L226 Difference]: Without dead ends: 16724 [2020-10-27 18:47:22,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 18:47:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16724 states. [2020-10-27 18:47:22,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16724 to 16716. [2020-10-27 18:47:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16716 states. [2020-10-27 18:47:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16716 states to 16716 states and 17556 transitions. [2020-10-27 18:47:22,421 INFO L78 Accepts]: Start accepts. Automaton has 16716 states and 17556 transitions. Word has length 1639 [2020-10-27 18:47:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:47:22,422 INFO L481 AbstractCegarLoop]: Abstraction has 16716 states and 17556 transitions. [2020-10-27 18:47:22,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:47:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 16716 states and 17556 transitions. [2020-10-27 18:47:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1734 [2020-10-27 18:47:22,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:47:22,468 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:47:22,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 18:47:22,470 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:47:22,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:47:22,471 INFO L82 PathProgramCache]: Analyzing trace with hash 978796681, now seen corresponding path program 1 times [2020-10-27 18:47:22,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:47:22,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465365448] [2020-10-27 18:47:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:47:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:23,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:23,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:27,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:28,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1761 [2020-10-27 18:47:28,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:47:28,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-27 18:47:28,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:28,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1648 [2020-10-27 18:47:28,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 18:47:28,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:28,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:47:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:28,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:28,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:47:28,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:47:28,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:28,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:47:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:28,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:28,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 18:47:28,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:28,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 18:47:28,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:28,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 18:47:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:28,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:28,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:28,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 18:47:28,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 18:47:28,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:28,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:28,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:28,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:28,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:28,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 18:47:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:28,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:28,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:28,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 18:47:28,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 18:47:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:28,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-27 18:47:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:28,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:28,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:28,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:47:28,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 18:47:28,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:28,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:28,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 782 [2020-10-27 18:47:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:28,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:28,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:28,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 18:47:28,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 18:47:28,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:28,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:28,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1032 [2020-10-27 18:47:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:28,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:28,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 18:47:28,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 18:47:28,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:28,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1305 [2020-10-27 18:47:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 18:47:29,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:47:29,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:47:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:47:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1417 [2020-10-27 18:47:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 18:47:29,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 18:47:29,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:47:29,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:47:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 18:47:29,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1632 [2020-10-27 18:47:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:47:29,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:47:29,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:47:29,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 18:47:29,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:47:29,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 18:47:29,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:47:29,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:47:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5414 backedges. 848 proven. 2 refuted. 0 times theorem prover too weak. 4564 trivial. 0 not checked. [2020-10-27 18:47:31,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465365448] [2020-10-27 18:47:31,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:47:31,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:47:31,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067451765] [2020-10-27 18:47:31,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:47:31,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:47:31,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:47:31,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:47:31,880 INFO L87 Difference]: Start difference. First operand 16716 states and 17556 transitions. Second operand 7 states.