/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem15_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:39:32,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:39:32,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:39:32,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:39:32,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:39:32,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:39:32,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:39:32,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:39:32,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:39:32,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:39:32,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:39:32,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:39:32,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:39:32,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:39:32,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:39:32,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:39:32,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:39:32,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:39:32,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:39:32,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:39:32,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:39:32,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:39:32,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:39:32,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:39:32,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:39:32,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:39:32,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:39:32,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:39:32,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:39:32,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:39:32,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:39:32,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:39:32,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:39:32,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:39:32,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:39:32,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:39:32,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:39:32,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:39:32,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:39:32,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:39:32,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:39:32,808 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 [2020-10-29 07:39:32,862 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:39:32,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:39:32,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:39:32,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:39:32,865 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:39:32,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:39:32,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:39:32,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:39:32,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:39:32,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:39:32,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:39:32,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:39:32,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:39:32,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:39:32,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:39:32,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:39:32,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:39:32,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:39:32,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:39:32,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:39:32,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:39:32,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:39:32,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:39:32,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:39:32,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:39:32,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:39:32,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:39:32,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:39:32,875 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:39:32,875 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:39:33,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:39:33,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:39:33,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:39:33,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:39:33,276 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:39:33,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label00.c [2020-10-29 07:39:33,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04f58e43f/a71d5f7e7a76486e8b56058eec80942b/FLAG5776fe9cf [2020-10-29 07:39:34,244 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:39:34,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label00.c [2020-10-29 07:39:34,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04f58e43f/a71d5f7e7a76486e8b56058eec80942b/FLAG5776fe9cf [2020-10-29 07:39:34,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04f58e43f/a71d5f7e7a76486e8b56058eec80942b [2020-10-29 07:39:34,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:39:34,357 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:39:34,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:39:34,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:39:34,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:39:34,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:39:34" (1/1) ... [2020-10-29 07:39:34,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7f0b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:34, skipping insertion in model container [2020-10-29 07:39:34,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:39:34" (1/1) ... [2020-10-29 07:39:34,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:39:34,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:39:35,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:39:35,249 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:39:35,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:39:35,554 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:39:35,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:35 WrapperNode [2020-10-29 07:39:35,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:39:35,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:39:35,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:39:35,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:39:35,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:35" (1/1) ... [2020-10-29 07:39:35,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:35" (1/1) ... [2020-10-29 07:39:35,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:35" (1/1) ... [2020-10-29 07:39:35,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:35" (1/1) ... [2020-10-29 07:39:35,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:35" (1/1) ... [2020-10-29 07:39:35,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:35" (1/1) ... [2020-10-29 07:39:35,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:35" (1/1) ... [2020-10-29 07:39:35,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:39:35,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:39:35,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:39:35,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:39:35,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:35" (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 [2020-10-29 07:39:35,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:39:35,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:39:35,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:39:35,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:39:35,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:39:35,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:39:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:39:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:39:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:39:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:39:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:39:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:39:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:39:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:39:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:39:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:39:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:39:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:39:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:39:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:39:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:39:39,247 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:39:39,247 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:39:39,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:39:39 BoogieIcfgContainer [2020-10-29 07:39:39,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:39:39,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:39:39,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:39:39,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:39:39,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:39:34" (1/3) ... [2020-10-29 07:39:39,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b96184c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:39:39, skipping insertion in model container [2020-10-29 07:39:39,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:35" (2/3) ... [2020-10-29 07:39:39,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b96184c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:39:39, skipping insertion in model container [2020-10-29 07:39:39,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:39:39" (3/3) ... [2020-10-29 07:39:39,259 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label00.c [2020-10-29 07:39:39,271 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:39:39,276 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:39:39,289 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:39:39,320 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:39:39,321 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:39:39,321 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:39:39,321 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:39:39,321 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:39:39,321 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:39:39,322 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:39:39,322 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:39:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:39:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 07:39:39,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:39,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:39:39,374 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:39,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:39,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1734594721, now seen corresponding path program 1 times [2020-10-29 07:39:39,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:39,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578750576] [2020-10-29 07:39:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:39,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:40,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:40,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 07:39:40,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:40,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-29 07:39:40,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:40,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:40,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:39:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:39:40,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 07:39:40,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:39:40,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:40,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:40,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:40,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:39:40,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:40,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:39:40,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:39:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:39:40,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578750576] [2020-10-29 07:39:40,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:39:40,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:39:40,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106969812] [2020-10-29 07:39:40,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:39:40,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:40,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:39:40,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:39:40,303 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:39:45,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:45,915 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-29 07:39:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:39:45,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-29 07:39:45,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:45,938 INFO L225 Difference]: With dead ends: 1204 [2020-10-29 07:39:45,938 INFO L226 Difference]: Without dead ends: 698 [2020-10-29 07:39:45,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:39:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-29 07:39:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-29 07:39:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-29 07:39:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-29 07:39:46,059 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 13 [2020-10-29 07:39:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:46,059 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-29 07:39:46,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:39:46,060 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-29 07:39:46,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 07:39:46,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:46,064 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:39:46,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:39:46,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:46,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:46,065 INFO L82 PathProgramCache]: Analyzing trace with hash -216852343, now seen corresponding path program 1 times [2020-10-29 07:39:46,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:46,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896785626] [2020-10-29 07:39:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:46,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:46,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:39:46,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:46,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-29 07:39:46,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:46,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:39:46,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:39:46,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:39:46,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:39:46,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:46,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:46,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:46,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:46,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:46,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:39:46,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:46,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:46,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:46,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:39:46,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:39:46,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:46,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:46,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:39:46,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 07:39:46,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:46,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:46,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:46,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:39:46,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:39:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:39:47,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896785626] [2020-10-29 07:39:47,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:39:47,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:39:47,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747647843] [2020-10-29 07:39:47,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:39:47,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:47,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:39:47,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:39:47,119 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-29 07:39:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:39:56,032 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-29 07:39:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:39:56,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-10-29 07:39:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:39:56,041 INFO L225 Difference]: With dead ends: 1712 [2020-10-29 07:39:56,041 INFO L226 Difference]: Without dead ends: 1026 [2020-10-29 07:39:56,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:39:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-29 07:39:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-29 07:39:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-29 07:39:56,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-29 07:39:56,136 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 82 [2020-10-29 07:39:56,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:39:56,137 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-29 07:39:56,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:39:56,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-29 07:39:56,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 07:39:56,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:39:56,144 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:39:56,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:39:56,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:39:56,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:39:56,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1997538543, now seen corresponding path program 1 times [2020-10-29 07:39:56,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:39:56,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928784980] [2020-10-29 07:39:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:39:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:56,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:57,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:57,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 07:39:57,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:39:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 833 [2020-10-29 07:39:57,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:57,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:39:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:39:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:39:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:39:57,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:39:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:57,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:57,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:39:57,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:39:57,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:57,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:39:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:39:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:39:57,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:57,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:39:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:39:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:39:57,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:39:57,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:39:57,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:39:57,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 07:39:57,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:39:57,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:39:57,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:39:57,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:39:57,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:39:57,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:39:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:39:57,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928784980] [2020-10-29 07:39:57,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:39:57,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:39:57,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65871911] [2020-10-29 07:39:57,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:39:57,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:39:57,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:39:57,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:39:57,449 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 8 states. [2020-10-29 07:40:08,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:08,087 INFO L93 Difference]: Finished difference Result 3021 states and 4376 transitions. [2020-10-29 07:40:08,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:40:08,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-29 07:40:08,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:08,105 INFO L225 Difference]: With dead ends: 3021 [2020-10-29 07:40:08,105 INFO L226 Difference]: Without dead ends: 2319 [2020-10-29 07:40:08,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:40:08,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-10-29 07:40:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 1982. [2020-10-29 07:40:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2020-10-29 07:40:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 2655 transitions. [2020-10-29 07:40:08,202 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 2655 transitions. Word has length 87 [2020-10-29 07:40:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:08,205 INFO L481 AbstractCegarLoop]: Abstraction has 1982 states and 2655 transitions. [2020-10-29 07:40:08,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:40:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 2655 transitions. [2020-10-29 07:40:08,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 07:40:08,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:08,217 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:40:08,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:40:08,217 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:08,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:08,218 INFO L82 PathProgramCache]: Analyzing trace with hash -719797461, now seen corresponding path program 1 times [2020-10-29 07:40:08,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:08,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890722747] [2020-10-29 07:40:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:08,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:08,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 07:40:08,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:08,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-29 07:40:08,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:08,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:40:08,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 07:40:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:08,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:08,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:08,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:08,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:08,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:40:08,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:08,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:08,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:08,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:08,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:08,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:08,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:08,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:08,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:40:08,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:08,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 07:40:08,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:08,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:08,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:08,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:08,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:40:08,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:08,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890722747] [2020-10-29 07:40:08,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:08,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:40:08,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922949181] [2020-10-29 07:40:08,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:40:08,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:08,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:40:08,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:40:08,932 INFO L87 Difference]: Start difference. First operand 1982 states and 2655 transitions. Second operand 5 states. [2020-10-29 07:40:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:19,545 INFO L93 Difference]: Finished difference Result 5237 states and 7270 transitions. [2020-10-29 07:40:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:40:19,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-29 07:40:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:19,564 INFO L225 Difference]: With dead ends: 5237 [2020-10-29 07:40:19,565 INFO L226 Difference]: Without dead ends: 3261 [2020-10-29 07:40:19,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:40:19,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2020-10-29 07:40:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 3244. [2020-10-29 07:40:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3244 states. [2020-10-29 07:40:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 4277 transitions. [2020-10-29 07:40:19,668 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 4277 transitions. Word has length 108 [2020-10-29 07:40:19,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:19,669 INFO L481 AbstractCegarLoop]: Abstraction has 3244 states and 4277 transitions. [2020-10-29 07:40:19,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:40:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 4277 transitions. [2020-10-29 07:40:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 07:40:19,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:19,672 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:40:19,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:40:19,672 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:19,673 INFO L82 PathProgramCache]: Analyzing trace with hash -454252841, now seen corresponding path program 1 times [2020-10-29 07:40:19,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:19,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746512552] [2020-10-29 07:40:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:19,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:21,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:21,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 07:40:21,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:21,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1784 [2020-10-29 07:40:21,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:21,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:21,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 07:40:21,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:21,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:21,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:21,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:21,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:21,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:21,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:40:21,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:21,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:21,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:21,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:21,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:21,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:22,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:22,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:40:22,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:22,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-29 07:40:22,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:22,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:22,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:22,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 07:40:22,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:22,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746512552] [2020-10-29 07:40:22,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:40:22,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:40:22,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655341284] [2020-10-29 07:40:22,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:22,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:22,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:22,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:22,526 INFO L87 Difference]: Start difference. First operand 3244 states and 4277 transitions. Second operand 7 states. [2020-10-29 07:40:32,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:32,323 INFO L93 Difference]: Finished difference Result 6817 states and 8924 transitions. [2020-10-29 07:40:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:40:32,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-10-29 07:40:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:32,343 INFO L225 Difference]: With dead ends: 6817 [2020-10-29 07:40:32,343 INFO L226 Difference]: Without dead ends: 3579 [2020-10-29 07:40:32,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:40:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2020-10-29 07:40:32,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3573. [2020-10-29 07:40:32,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2020-10-29 07:40:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4634 transitions. [2020-10-29 07:40:32,451 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4634 transitions. Word has length 175 [2020-10-29 07:40:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:32,451 INFO L481 AbstractCegarLoop]: Abstraction has 3573 states and 4634 transitions. [2020-10-29 07:40:32,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:40:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4634 transitions. [2020-10-29 07:40:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 07:40:32,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:32,454 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:32,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:40:32,455 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:32,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:32,455 INFO L82 PathProgramCache]: Analyzing trace with hash 689223283, now seen corresponding path program 1 times [2020-10-29 07:40:32,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:32,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458920634] [2020-10-29 07:40:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:33,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:34,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:34,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 07:40:34,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:40:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2096 [2020-10-29 07:40:34,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:34,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:34,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:40:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 07:40:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:34,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:34,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:34,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:34,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:40:34,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:34,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:34,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:34,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:34,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:34,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:40:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 07:40:34,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:34,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:40:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:34,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:40:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:35,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:35,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:35,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:40:35,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:40:35,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:35,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:40:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-29 07:40:35,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458920634] [2020-10-29 07:40:35,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:35,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:40:35,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853254361] [2020-10-29 07:40:35,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:35,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:35,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:35,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:35,225 INFO L87 Difference]: Start difference. First operand 3573 states and 4634 transitions. Second operand 7 states. [2020-10-29 07:40:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:44,004 INFO L93 Difference]: Finished difference Result 8846 states and 11968 transitions. [2020-10-29 07:40:44,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:40:44,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-29 07:40:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:44,033 INFO L225 Difference]: With dead ends: 8846 [2020-10-29 07:40:44,033 INFO L226 Difference]: Without dead ends: 5586 [2020-10-29 07:40:44,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:40:44,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2020-10-29 07:40:44,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 5179. [2020-10-29 07:40:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5179 states. [2020-10-29 07:40:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 6272 transitions. [2020-10-29 07:40:44,211 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 6272 transitions. Word has length 178 [2020-10-29 07:40:44,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:44,213 INFO L481 AbstractCegarLoop]: Abstraction has 5179 states and 6272 transitions. [2020-10-29 07:40:44,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:40:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 6272 transitions. [2020-10-29 07:40:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 07:40:44,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:44,216 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:40:44,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:40:44,217 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:44,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:44,219 INFO L82 PathProgramCache]: Analyzing trace with hash -788323781, now seen corresponding path program 1 times [2020-10-29 07:40:44,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:44,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076354930] [2020-10-29 07:40:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 07:40:44,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-29 07:40:44,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-29 07:40:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 07:40:44,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:44,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:44,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:44,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:44,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:44,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:40:44,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:44,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:40:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:40:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:44,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:45,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:45,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-29 07:40:45,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:45,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 07:40:45,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:45,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:45,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 07:40:45,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:45,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076354930] [2020-10-29 07:40:45,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:45,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:40:45,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601599506] [2020-10-29 07:40:45,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:40:45,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:45,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:40:45,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:40:45,253 INFO L87 Difference]: Start difference. First operand 5179 states and 6272 transitions. Second operand 5 states. [2020-10-29 07:41:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:01,288 INFO L93 Difference]: Finished difference Result 12265 states and 15370 transitions. [2020-10-29 07:41:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:41:01,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-29 07:41:01,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:01,327 INFO L225 Difference]: With dead ends: 12265 [2020-10-29 07:41:01,328 INFO L226 Difference]: Without dead ends: 7399 [2020-10-29 07:41:01,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:41:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2020-10-29 07:41:01,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 6762. [2020-10-29 07:41:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6762 states. [2020-10-29 07:41:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 8284 transitions. [2020-10-29 07:41:01,531 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 8284 transitions. Word has length 193 [2020-10-29 07:41:01,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:01,532 INFO L481 AbstractCegarLoop]: Abstraction has 6762 states and 8284 transitions. [2020-10-29 07:41:01,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:41:01,532 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 8284 transitions. [2020-10-29 07:41:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-29 07:41:01,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:01,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:01,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:41:01,537 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:01,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1929918312, now seen corresponding path program 1 times [2020-10-29 07:41:01,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:01,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785124673] [2020-10-29 07:41:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:02,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:02,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 07:41:02,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:02,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-29 07:41:02,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:02,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:41:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 07:41:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:02,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:02,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:02,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:02,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:41:02,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:02,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:02,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:02,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:02,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:02,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:41:02,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-29 07:41:02,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:02,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:41:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:41:03,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785124673] [2020-10-29 07:41:03,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:03,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:41:03,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853111710] [2020-10-29 07:41:03,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:41:03,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:03,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:41:03,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:41:03,020 INFO L87 Difference]: Start difference. First operand 6762 states and 8284 transitions. Second operand 5 states. [2020-10-29 07:41:16,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:16,306 INFO L93 Difference]: Finished difference Result 15751 states and 19818 transitions. [2020-10-29 07:41:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:41:16,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-29 07:41:16,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:16,342 INFO L225 Difference]: With dead ends: 15751 [2020-10-29 07:41:16,342 INFO L226 Difference]: Without dead ends: 9302 [2020-10-29 07:41:16,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:41:16,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9302 states. [2020-10-29 07:41:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9302 to 8980. [2020-10-29 07:41:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8980 states. [2020-10-29 07:41:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8980 states to 8980 states and 11017 transitions. [2020-10-29 07:41:16,607 INFO L78 Accepts]: Start accepts. Automaton has 8980 states and 11017 transitions. Word has length 250 [2020-10-29 07:41:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:16,608 INFO L481 AbstractCegarLoop]: Abstraction has 8980 states and 11017 transitions. [2020-10-29 07:41:16,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:41:16,608 INFO L276 IsEmpty]: Start isEmpty. Operand 8980 states and 11017 transitions. [2020-10-29 07:41:16,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-29 07:41:16,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:16,618 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:16,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:41:16,619 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:16,619 INFO L82 PathProgramCache]: Analyzing trace with hash -113789162, now seen corresponding path program 1 times [2020-10-29 07:41:16,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:16,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128203703] [2020-10-29 07:41:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:16,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:21,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:21,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-29 07:41:21,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:41:21,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4609 [2020-10-29 07:41:21,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:21,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:21,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:41:21,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:21,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 313 [2020-10-29 07:41:21,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:21,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:21,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:21,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:21,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:21,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:21,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:41:21,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:21,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:21,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:21,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:21,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:21,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:21,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:21,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:21,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:21,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:41:21,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 07:41:21,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:21,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:41:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:22,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:41:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:22,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:22,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:22,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:22,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:41:22,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-29 07:41:22,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:22,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:22,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:41:22,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:41:23,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128203703] [2020-10-29 07:41:23,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:23,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:41:23,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397084316] [2020-10-29 07:41:23,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:41:23,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:23,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:41:23,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:41:23,425 INFO L87 Difference]: Start difference. First operand 8980 states and 11017 transitions. Second operand 8 states. [2020-10-29 07:41:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:38,114 INFO L93 Difference]: Finished difference Result 24204 states and 30967 transitions. [2020-10-29 07:41:38,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:41:38,117 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 308 [2020-10-29 07:41:38,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:38,163 INFO L225 Difference]: With dead ends: 24204 [2020-10-29 07:41:38,163 INFO L226 Difference]: Without dead ends: 15537 [2020-10-29 07:41:38,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:41:38,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15537 states. [2020-10-29 07:41:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15537 to 12738. [2020-10-29 07:41:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12738 states. [2020-10-29 07:41:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12738 states to 12738 states and 16041 transitions. [2020-10-29 07:41:38,539 INFO L78 Accepts]: Start accepts. Automaton has 12738 states and 16041 transitions. Word has length 308 [2020-10-29 07:41:38,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:38,540 INFO L481 AbstractCegarLoop]: Abstraction has 12738 states and 16041 transitions. [2020-10-29 07:41:38,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:41:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand 12738 states and 16041 transitions. [2020-10-29 07:41:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-29 07:41:38,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:38,549 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:38,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:41:38,549 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:38,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:38,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1296963151, now seen corresponding path program 1 times [2020-10-29 07:41:38,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:38,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185236471] [2020-10-29 07:41:38,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:38,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:38,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:41,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:41,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-29 07:41:41,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:41,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2340 [2020-10-29 07:41:41,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:41,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:41:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:41:41,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:41,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:41,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:41,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:41,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:41,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:41,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:41:41,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:41,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:41,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:41,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:41,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:41:41,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-29 07:41:41,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:41,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:41,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:41:41,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:41:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:41,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:41,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:41:41,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 07:41:41,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:41,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:41:41,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:41:42,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185236471] [2020-10-29 07:41:42,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:42,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:42,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887990993] [2020-10-29 07:41:42,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:42,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:42,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:42,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:42,105 INFO L87 Difference]: Start difference. First operand 12738 states and 16041 transitions. Second operand 7 states. [2020-10-29 07:41:55,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:55,118 INFO L93 Difference]: Finished difference Result 27741 states and 35554 transitions. [2020-10-29 07:41:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:41:55,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-29 07:41:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:55,175 INFO L225 Difference]: With dead ends: 27741 [2020-10-29 07:41:55,175 INFO L226 Difference]: Without dead ends: 15625 [2020-10-29 07:41:55,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:41:55,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15625 states. [2020-10-29 07:41:55,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15625 to 15599. [2020-10-29 07:41:55,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15599 states. [2020-10-29 07:41:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15599 states to 15599 states and 19612 transitions. [2020-10-29 07:41:55,598 INFO L78 Accepts]: Start accepts. Automaton has 15599 states and 19612 transitions. Word has length 367 [2020-10-29 07:41:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:55,598 INFO L481 AbstractCegarLoop]: Abstraction has 15599 states and 19612 transitions. [2020-10-29 07:41:55,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 15599 states and 19612 transitions. [2020-10-29 07:41:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-29 07:41:55,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:55,606 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:55,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:41:55,607 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:55,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:55,607 INFO L82 PathProgramCache]: Analyzing trace with hash -916536675, now seen corresponding path program 1 times [2020-10-29 07:41:55,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:55,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327809319] [2020-10-29 07:41:55,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:55,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:57,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:57,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-29 07:41:57,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1344 [2020-10-29 07:41:57,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:57,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:41:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:41:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:41:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:57,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:57,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:57,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:57,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:41:57,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:57,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:57,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:57,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:57,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:41:57,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:57,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-29 07:41:57,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:57,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:57,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:41:57,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:57,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:41:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:58,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:58,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:41:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 07:41:58,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:58,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:41:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:41:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 73 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:41:58,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327809319] [2020-10-29 07:41:58,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:58,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:41:58,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271599409] [2020-10-29 07:41:58,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:41:58,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:58,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:41:58,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:41:58,226 INFO L87 Difference]: Start difference. First operand 15599 states and 19612 transitions. Second operand 8 states. [2020-10-29 07:42:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:22,506 INFO L93 Difference]: Finished difference Result 43557 states and 57748 transitions. [2020-10-29 07:42:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:42:22,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 368 [2020-10-29 07:42:22,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:22,751 INFO L225 Difference]: With dead ends: 43557 [2020-10-29 07:42:22,751 INFO L226 Difference]: Without dead ends: 28580 [2020-10-29 07:42:22,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:42:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28580 states. [2020-10-29 07:42:23,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28580 to 26272. [2020-10-29 07:42:23,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26272 states. [2020-10-29 07:42:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26272 states to 26272 states and 34203 transitions. [2020-10-29 07:42:23,472 INFO L78 Accepts]: Start accepts. Automaton has 26272 states and 34203 transitions. Word has length 368 [2020-10-29 07:42:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:23,473 INFO L481 AbstractCegarLoop]: Abstraction has 26272 states and 34203 transitions. [2020-10-29 07:42:23,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:42:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 26272 states and 34203 transitions. [2020-10-29 07:42:23,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-29 07:42:23,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:23,482 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:23,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:42:23,483 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:23,483 INFO L82 PathProgramCache]: Analyzing trace with hash -864655214, now seen corresponding path program 1 times [2020-10-29 07:42:23,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:23,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91670679] [2020-10-29 07:42:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:23,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:24,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:24,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:28,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:28,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-29 07:42:28,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:42:28,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 07:42:28,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:28,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:42:28,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:42:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:28,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:28,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:28,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:42:28,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:28,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:28,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:28,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:28,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:28,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:42:28,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 07:42:28,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:28,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:42:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:42:28,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:42:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:29,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:29,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:42:29,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:29,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-29 07:42:29,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:29,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:29,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:42:29,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:29,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:42:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:29,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:42:29,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:42:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:29,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:42:29,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 111 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-29 07:42:29,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91670679] [2020-10-29 07:42:29,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:29,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:29,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621259151] [2020-10-29 07:42:29,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:29,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:29,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:29,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:29,745 INFO L87 Difference]: Start difference. First operand 26272 states and 34203 transitions. Second operand 7 states. [2020-10-29 07:42:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:45,464 INFO L93 Difference]: Finished difference Result 63075 states and 82971 transitions. [2020-10-29 07:42:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:42:45,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-29 07:42:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:45,573 INFO L225 Difference]: With dead ends: 63075 [2020-10-29 07:42:45,573 INFO L226 Difference]: Without dead ends: 33930 [2020-10-29 07:42:45,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:42:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33930 states. [2020-10-29 07:42:46,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33930 to 26825. [2020-10-29 07:42:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26825 states. [2020-10-29 07:42:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26825 states to 26825 states and 33745 transitions. [2020-10-29 07:42:46,411 INFO L78 Accepts]: Start accepts. Automaton has 26825 states and 33745 transitions. Word has length 388 [2020-10-29 07:42:46,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:46,412 INFO L481 AbstractCegarLoop]: Abstraction has 26825 states and 33745 transitions. [2020-10-29 07:42:46,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 26825 states and 33745 transitions. [2020-10-29 07:42:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-29 07:42:46,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:46,424 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:42:46,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:42:46,424 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:46,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:46,425 INFO L82 PathProgramCache]: Analyzing trace with hash 355362250, now seen corresponding path program 1 times [2020-10-29 07:42:46,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:46,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802001587] [2020-10-29 07:42:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:47,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:50,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:50,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 483 [2020-10-29 07:42:50,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3852 [2020-10-29 07:42:50,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:50,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:42:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:42:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:50,617 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:42:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:50,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:50,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:50,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:50,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:42:50,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:50,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:50,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:50,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:50,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:42:50,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:50,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 07:42:50,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:50,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:42:50,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:51,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:42:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:51,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:51,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:51,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 07:42:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:51,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:42:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:42:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:51,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:51,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:42:51,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:42:51,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:51,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 07:42:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 127 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 07:42:51,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802001587] [2020-10-29 07:42:51,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:51,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:51,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317133956] [2020-10-29 07:42:51,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:51,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:51,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:51,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:51,712 INFO L87 Difference]: Start difference. First operand 26825 states and 33745 transitions. Second operand 7 states. [2020-10-29 07:42:55,863 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:43:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:03,293 INFO L93 Difference]: Finished difference Result 53393 states and 67429 transitions. [2020-10-29 07:43:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:43:03,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 467 [2020-10-29 07:43:03,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:03,386 INFO L225 Difference]: With dead ends: 53393 [2020-10-29 07:43:03,387 INFO L226 Difference]: Without dead ends: 26883 [2020-10-29 07:43:03,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:43:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26883 states. [2020-10-29 07:43:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26883 to 26229. [2020-10-29 07:43:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26229 states. [2020-10-29 07:43:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26229 states to 26229 states and 33167 transitions. [2020-10-29 07:43:04,015 INFO L78 Accepts]: Start accepts. Automaton has 26229 states and 33167 transitions. Word has length 467 [2020-10-29 07:43:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:04,016 INFO L481 AbstractCegarLoop]: Abstraction has 26229 states and 33167 transitions. [2020-10-29 07:43:04,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:04,016 INFO L276 IsEmpty]: Start isEmpty. Operand 26229 states and 33167 transitions. [2020-10-29 07:43:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-29 07:43:04,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:04,022 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:43:04,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:43:04,022 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:04,023 INFO L82 PathProgramCache]: Analyzing trace with hash 276847554, now seen corresponding path program 1 times [2020-10-29 07:43:04,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:04,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019627439] [2020-10-29 07:43:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:05,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:05,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-29 07:43:05,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:05,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1801 [2020-10-29 07:43:05,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:05,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:43:05,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:43:05,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:06,189 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:43:06,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:06,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:06,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:06,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:43:06,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:06,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:06,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:06,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:06,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:06,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:06,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:06,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 07:43:06,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:06,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:06,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:06,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:06,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:06,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:06,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:06,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 07:43:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:06,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:43:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:43:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:06,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:06,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:06,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:43:06,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:43:06,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:06,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:43:06,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:43:06,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019627439] [2020-10-29 07:43:06,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:06,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:06,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579690691] [2020-10-29 07:43:06,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:06,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:06,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:06,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:06,847 INFO L87 Difference]: Start difference. First operand 26229 states and 33167 transitions. Second operand 7 states. [2020-10-29 07:43:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:22,694 INFO L93 Difference]: Finished difference Result 58286 states and 74119 transitions. [2020-10-29 07:43:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:43:22,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 479 [2020-10-29 07:43:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:22,791 INFO L225 Difference]: With dead ends: 58286 [2020-10-29 07:43:22,792 INFO L226 Difference]: Without dead ends: 29573 [2020-10-29 07:43:22,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:43:22,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29573 states.