/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=SHALLOWEST --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/Problem18_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:26:20,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:26:20,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:26:20,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:26:20,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:26:20,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:26:20,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:26:20,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:26:20,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:26:20,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:26:20,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:26:20,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:26:20,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:26:20,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:26:20,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:26:20,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:26:20,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:26:20,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:26:20,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:26:20,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:26:20,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:26:20,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:26:20,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:26:20,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:26:20,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:26:20,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:26:20,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:26:20,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:26:20,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:26:20,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:26:20,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:26:20,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:26:20,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:26:20,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:26:20,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:26:20,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:26:20,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:26:20,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:26:20,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:26:20,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:26:20,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:26:20,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:26:20,853 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:26:20,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:26:20,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:26:20,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:26:20,855 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:26:20,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:26:20,856 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:26:20,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:26:20,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:26:20,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:26:20,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:26:20,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:26:20,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:26:20,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:26:20,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:26:20,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:26:20,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:26:20,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:26:20,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:26:20,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:26:20,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:26:20,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:26:20,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:26:20,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:26:20,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:26:20,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:26:20,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:26:20,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:26:20,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:26:20,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:26:21,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:26:21,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:26:21,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:26:21,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:26:21,304 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:26:21,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label20.c [2020-10-27 00:26:21,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/491353083/168a18a1485d48f39642b645cae11cd4/FLAGa6835db26 [2020-10-27 00:26:22,488 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:26:22,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label20.c [2020-10-27 00:26:22,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/491353083/168a18a1485d48f39642b645cae11cd4/FLAGa6835db26 [2020-10-27 00:26:22,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/491353083/168a18a1485d48f39642b645cae11cd4 [2020-10-27 00:26:22,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:26:22,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:26:23,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:26:23,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:26:23,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:26:23,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:26:22" (1/1) ... [2020-10-27 00:26:23,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d463e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:23, skipping insertion in model container [2020-10-27 00:26:23,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:26:22" (1/1) ... [2020-10-27 00:26:23,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:26:23,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:26:24,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:26:24,347 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:26:24,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:26:24,826 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:26:24,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:24 WrapperNode [2020-10-27 00:26:24,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:26:24,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:26:24,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:26:24,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:26:24,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:24" (1/1) ... [2020-10-27 00:26:24,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:24" (1/1) ... [2020-10-27 00:26:24,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:24" (1/1) ... [2020-10-27 00:26:24,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:24" (1/1) ... [2020-10-27 00:26:25,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:24" (1/1) ... [2020-10-27 00:26:25,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:24" (1/1) ... [2020-10-27 00:26:25,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:24" (1/1) ... [2020-10-27 00:26:25,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:26:25,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:26:25,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:26:25,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:26:25,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:26:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:26:25,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:26:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:26:25,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:26:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:26:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:26:25,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:26:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:26:25,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:26:25,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:26:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:26:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:26:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:26:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:26:25,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:26:25,239 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:26:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:26:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:26:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:26:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:26:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:26:25,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:26:25,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:26:29,630 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:26:29,631 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:26:29,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:26:29 BoogieIcfgContainer [2020-10-27 00:26:29,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:26:29,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:26:29,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:26:29,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:26:29,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:26:22" (1/3) ... [2020-10-27 00:26:29,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7773db93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:26:29, skipping insertion in model container [2020-10-27 00:26:29,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:24" (2/3) ... [2020-10-27 00:26:29,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7773db93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:26:29, skipping insertion in model container [2020-10-27 00:26:29,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:26:29" (3/3) ... [2020-10-27 00:26:29,646 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label20.c [2020-10-27 00:26:29,657 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:26:29,662 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:26:29,678 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:26:29,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:26:29,715 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:26:29,716 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:26:29,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:26:29,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:26:29,716 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:26:29,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:26:29,716 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:26:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:26:29,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 00:26:29,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:29,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:26:29,762 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:29,769 INFO L82 PathProgramCache]: Analyzing trace with hash -715454928, now seen corresponding path program 1 times [2020-10-27 00:26:29,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:29,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521413804] [2020-10-27 00:26:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:30,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:30,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:30,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 00:26:30,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:30,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-27 00:26:30,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:26:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:26:30,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 00:26:30,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:26:30,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:30,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:30,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:30,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:30,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:26:30,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:26:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:26:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:26:30,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521413804] [2020-10-27 00:26:30,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:26:30,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:26:30,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134607146] [2020-10-27 00:26:30,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:26:30,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:26:30,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:26:30,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:26:30,873 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:26:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:26:45,000 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-27 00:26:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:26:45,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-27 00:26:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:26:45,048 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:26:45,048 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:26:45,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:26:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:26:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:26:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:26:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-27 00:26:45,306 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 13 [2020-10-27 00:26:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:26:45,307 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-27 00:26:45,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:26:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-27 00:26:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-27 00:26:45,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:45,312 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] [2020-10-27 00:26:45,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:26:45,312 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1254898411, now seen corresponding path program 1 times [2020-10-27 00:26:45,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:45,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390723783] [2020-10-27 00:26:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:45,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:45,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:46,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:46,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 00:26:46,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:26:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-27 00:26:46,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:26:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:26:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:26:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:26:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:46,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:46,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:46,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:26:46,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:46,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:46,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:26:46,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:26:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:26:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:46,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:46,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:26:46,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:46,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 00:26:46,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:26:46,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:26:46,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390723783] [2020-10-27 00:26:46,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:26:46,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:26:46,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343494905] [2020-10-27 00:26:46,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:26:46,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:26:46,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:26:46,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:26:46,441 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-27 00:26:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:26:57,136 INFO L93 Difference]: Finished difference Result 5047 states and 8287 transitions. [2020-10-27 00:26:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:26:57,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-10-27 00:26:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:26:57,159 INFO L225 Difference]: With dead ends: 5047 [2020-10-27 00:26:57,160 INFO L226 Difference]: Without dead ends: 2917 [2020-10-27 00:26:57,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:26:57,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-10-27 00:26:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2880. [2020-10-27 00:26:57,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2020-10-27 00:26:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4329 transitions. [2020-10-27 00:26:57,269 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4329 transitions. Word has length 84 [2020-10-27 00:26:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:26:57,269 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 4329 transitions. [2020-10-27 00:26:57,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:26:57,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4329 transitions. [2020-10-27 00:26:57,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 00:26:57,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:26:57,278 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] [2020-10-27 00:26:57,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:26:57,278 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:26:57,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:26:57,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1622721783, now seen corresponding path program 1 times [2020-10-27 00:26:57,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:26:57,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922884451] [2020-10-27 00:26:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:26:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:59,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 00:26:59,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:26:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1804 [2020-10-27 00:26:59,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:26:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:26:59,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-27 00:26:59,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:59,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:26:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:59,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:59,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:26:59,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:59,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:26:59,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:26:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:26:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:26:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:59,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:26:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:26:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:26:59,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:26:59,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 00:26:59,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:26:59,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-27 00:26:59,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:26:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:26:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:26:59,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 00:26:59,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:26:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:26:59,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922884451] [2020-10-27 00:26:59,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:26:59,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:26:59,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728593197] [2020-10-27 00:26:59,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:26:59,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:26:59,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:26:59,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:26:59,974 INFO L87 Difference]: Start difference. First operand 2880 states and 4329 transitions. Second operand 7 states. [2020-10-27 00:27:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:11,584 INFO L93 Difference]: Finished difference Result 8831 states and 13447 transitions. [2020-10-27 00:27:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:27:11,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-10-27 00:27:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:11,620 INFO L225 Difference]: With dead ends: 8831 [2020-10-27 00:27:11,620 INFO L226 Difference]: Without dead ends: 5957 [2020-10-27 00:27:11,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:27:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2020-10-27 00:27:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 5116. [2020-10-27 00:27:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5116 states. [2020-10-27 00:27:11,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 6870 transitions. [2020-10-27 00:27:11,790 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 6870 transitions. Word has length 163 [2020-10-27 00:27:11,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:11,791 INFO L481 AbstractCegarLoop]: Abstraction has 5116 states and 6870 transitions. [2020-10-27 00:27:11,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:27:11,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 6870 transitions. [2020-10-27 00:27:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-27 00:27:11,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:11,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:11,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:27:11,796 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:11,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:11,796 INFO L82 PathProgramCache]: Analyzing trace with hash 873502868, now seen corresponding path program 1 times [2020-10-27 00:27:11,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:11,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904119032] [2020-10-27 00:27:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:12,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:12,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-27 00:27:12,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:27:12,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-10-27 00:27:12,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:27:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:27:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:27:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:27:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:13,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:13,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:13,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:27:13,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:27:13,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:13,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:13,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:13,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:13,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:27:13,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 00:27:13,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:27:13,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:13,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 00:27:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:13,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:13,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:13,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:27:13,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:13,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:27:13,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:27:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:13,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 00:27:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:27:13,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904119032] [2020-10-27 00:27:13,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:13,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:27:13,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523999870] [2020-10-27 00:27:13,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:27:13,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:13,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:27:13,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:27:13,469 INFO L87 Difference]: Start difference. First operand 5116 states and 6870 transitions. Second operand 7 states. [2020-10-27 00:27:24,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:24,205 INFO L93 Difference]: Finished difference Result 11262 states and 15032 transitions. [2020-10-27 00:27:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:27:24,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-10-27 00:27:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:24,242 INFO L225 Difference]: With dead ends: 11262 [2020-10-27 00:27:24,242 INFO L226 Difference]: Without dead ends: 6152 [2020-10-27 00:27:24,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:27:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6152 states. [2020-10-27 00:27:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6152 to 5867. [2020-10-27 00:27:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5867 states. [2020-10-27 00:27:24,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 7676 transitions. [2020-10-27 00:27:24,421 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 7676 transitions. Word has length 174 [2020-10-27 00:27:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:24,422 INFO L481 AbstractCegarLoop]: Abstraction has 5867 states and 7676 transitions. [2020-10-27 00:27:24,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:27:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 7676 transitions. [2020-10-27 00:27:24,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-27 00:27:24,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:24,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:24,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:27:24,427 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:24,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:24,427 INFO L82 PathProgramCache]: Analyzing trace with hash 209916538, now seen corresponding path program 1 times [2020-10-27 00:27:24,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:24,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85891396] [2020-10-27 00:27:24,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:25,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:27,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:27,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-27 00:27:27,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:27:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3178 [2020-10-27 00:27:27,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:27:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:27:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:27:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:27,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:27,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:27,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:27,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:27:27,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:27:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:27,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:27,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:28,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:28,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:27:28,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:28,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 00:27:28,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:27:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:28,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:27:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:28,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:28,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 00:27:28,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:28,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:27:28,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 00:27:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:28,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:27:28,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85891396] [2020-10-27 00:27:28,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:28,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:27:28,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879443806] [2020-10-27 00:27:28,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:27:28,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:28,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:27:28,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:27:28,493 INFO L87 Difference]: Start difference. First operand 5867 states and 7676 transitions. Second operand 7 states. [2020-10-27 00:27:28,631 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 00:27:42,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:42,643 INFO L93 Difference]: Finished difference Result 15484 states and 20796 transitions. [2020-10-27 00:27:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:27:42,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-27 00:27:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:42,705 INFO L225 Difference]: With dead ends: 15484 [2020-10-27 00:27:42,705 INFO L226 Difference]: Without dead ends: 10325 [2020-10-27 00:27:42,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:27:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10325 states. [2020-10-27 00:27:42,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10325 to 10237. [2020-10-27 00:27:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10237 states. [2020-10-27 00:27:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10237 states to 10237 states and 12611 transitions. [2020-10-27 00:27:42,984 INFO L78 Accepts]: Start accepts. Automaton has 10237 states and 12611 transitions. Word has length 229 [2020-10-27 00:27:42,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:42,985 INFO L481 AbstractCegarLoop]: Abstraction has 10237 states and 12611 transitions. [2020-10-27 00:27:42,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:27:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 10237 states and 12611 transitions. [2020-10-27 00:27:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-27 00:27:42,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:42,994 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:42,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:27:42,995 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:42,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:42,996 INFO L82 PathProgramCache]: Analyzing trace with hash -271706725, now seen corresponding path program 1 times [2020-10-27 00:27:42,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:42,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257592118] [2020-10-27 00:27:42,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:43,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:44,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:44,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:47,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:47,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-27 00:27:47,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:27:47,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4571 [2020-10-27 00:27:47,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:47,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:47,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:27:47,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:27:47,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:47,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:47,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:47,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:47,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:47,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:27:47,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:47,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:47,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:47,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:47,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:47,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:27:47,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:47,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 00:27:47,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:27:47,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:48,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:27:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:48,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:48,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:48,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:27:48,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:27:48,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 00:27:48,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:27:48,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:48,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:27:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:48,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:48,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 00:27:48,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:27:48,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:27:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 00:27:48,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:27:48,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 138 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-27 00:27:48,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257592118] [2020-10-27 00:27:48,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:27:48,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:27:48,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695181458] [2020-10-27 00:27:48,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:27:48,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:48,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:27:48,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:27:48,722 INFO L87 Difference]: Start difference. First operand 10237 states and 12611 transitions. Second operand 7 states. [2020-10-27 00:27:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:58,615 INFO L93 Difference]: Finished difference Result 19361 states and 24249 transitions. [2020-10-27 00:27:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:27:58,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 415 [2020-10-27 00:27:58,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:58,649 INFO L225 Difference]: With dead ends: 19361 [2020-10-27 00:27:58,649 INFO L226 Difference]: Without dead ends: 9613 [2020-10-27 00:27:58,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:27:58,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9613 states. [2020-10-27 00:27:58,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9613 to 9512. [2020-10-27 00:27:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9512 states. [2020-10-27 00:27:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 10865 transitions. [2020-10-27 00:27:58,977 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 10865 transitions. Word has length 415 [2020-10-27 00:27:58,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:58,978 INFO L481 AbstractCegarLoop]: Abstraction has 9512 states and 10865 transitions. [2020-10-27 00:27:58,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:27:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 10865 transitions. [2020-10-27 00:27:58,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-27 00:27:58,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:58,993 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:58,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:27:58,994 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:58,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:58,995 INFO L82 PathProgramCache]: Analyzing trace with hash 544434085, now seen corresponding path program 1 times [2020-10-27 00:27:58,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:58,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679144802] [2020-10-27 00:27:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:59,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:04,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:04,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-27 00:28:04,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:28:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 00:28:04,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:04,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:28:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:28:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:28:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:04,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 00:28:04,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:28:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:04,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:05,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:05,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:28:05,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-10-27 00:28:05,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:28:05,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:05,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:05,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:28:05,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 00:28:05,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:28:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:05,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:28:05,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:05,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:28:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:05,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:05,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:28:05,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:05,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:28:05,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 00:28:05,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:05,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-27 00:28:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:05,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:05,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:05,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:28:05,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:28:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:28:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:05,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 15 proven. 151 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 00:28:05,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679144802] [2020-10-27 00:28:05,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:28:05,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:28:05,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446109124] [2020-10-27 00:28:05,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:28:05,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:05,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:28:05,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:05,805 INFO L87 Difference]: Start difference. First operand 9512 states and 10865 transitions. Second operand 7 states. [2020-10-27 00:28:16,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:16,386 INFO L93 Difference]: Finished difference Result 25043 states and 29421 transitions. [2020-10-27 00:28:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:28:16,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 481 [2020-10-27 00:28:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:16,448 INFO L225 Difference]: With dead ends: 25043 [2020-10-27 00:28:16,448 INFO L226 Difference]: Without dead ends: 16239 [2020-10-27 00:28:16,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:28:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16239 states. [2020-10-27 00:28:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16239 to 16097. [2020-10-27 00:28:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16097 states. [2020-10-27 00:28:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16097 states to 16097 states and 18264 transitions. [2020-10-27 00:28:17,039 INFO L78 Accepts]: Start accepts. Automaton has 16097 states and 18264 transitions. Word has length 481 [2020-10-27 00:28:17,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:17,040 INFO L481 AbstractCegarLoop]: Abstraction has 16097 states and 18264 transitions. [2020-10-27 00:28:17,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:28:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 16097 states and 18264 transitions. [2020-10-27 00:28:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-27 00:28:17,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:17,082 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:17,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:28:17,083 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:17,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:17,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1432595354, now seen corresponding path program 1 times [2020-10-27 00:28:17,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:17,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411044061] [2020-10-27 00:28:17,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:18,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:21,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:21,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1032 [2020-10-27 00:28:21,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:28:21,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4488 [2020-10-27 00:28:21,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:21,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:28:21,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:28:21,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:22,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:22,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:22,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:22,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:22,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 00:28:22,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:22,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:22,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:22,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:22,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:28:22,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 00:28:22,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:22,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:22,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:28:22,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:22,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 00:28:22,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:22,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:22,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:22,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:22,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:22,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:28:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:22,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:22,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:28:22,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:22,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:28:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:28:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:23,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:23,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:28:23,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-27 00:28:23,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:28:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:23,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:23,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:23,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:28:23,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:23,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:28:23,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:23,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:23,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:23,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:28:23,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:23,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:28:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:23,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:23,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:23,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:28:23,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:23,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:28:23,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:23,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:28:23,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:23,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 00:28:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:23,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:23,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:28:23,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:28:23,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:28:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 210 proven. 70 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2020-10-27 00:28:24,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411044061] [2020-10-27 00:28:24,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:28:24,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:28:24,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84495571] [2020-10-27 00:28:24,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:28:24,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:24,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:28:24,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:24,047 INFO L87 Difference]: Start difference. First operand 16097 states and 18264 transitions. Second operand 7 states. [2020-10-27 00:28:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:34,344 INFO L93 Difference]: Finished difference Result 38921 states and 45901 transitions. [2020-10-27 00:28:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:28:34,345 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1008 [2020-10-27 00:28:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:34,429 INFO L225 Difference]: With dead ends: 38921 [2020-10-27 00:28:34,429 INFO L226 Difference]: Without dead ends: 24242 [2020-10-27 00:28:34,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:28:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24242 states. [2020-10-27 00:28:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24242 to 24135. [2020-10-27 00:28:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24135 states. [2020-10-27 00:28:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24135 states to 24135 states and 27796 transitions. [2020-10-27 00:28:35,020 INFO L78 Accepts]: Start accepts. Automaton has 24135 states and 27796 transitions. Word has length 1008 [2020-10-27 00:28:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:35,022 INFO L481 AbstractCegarLoop]: Abstraction has 24135 states and 27796 transitions. [2020-10-27 00:28:35,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:28:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 24135 states and 27796 transitions. [2020-10-27 00:28:35,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2020-10-27 00:28:35,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:35,235 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:35,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:28:35,235 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:35,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:35,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2087374078, now seen corresponding path program 1 times [2020-10-27 00:28:35,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:35,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871440274] [2020-10-27 00:28:35,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:37,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:40,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:40,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1084 [2020-10-27 00:28:40,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:28:40,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-27 00:28:40,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:40,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:28:40,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-27 00:28:40,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:40,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:40,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:40,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:40,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:28:40,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:40,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:40,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:40,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:40,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:41,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:41,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:28:41,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:41,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 00:28:41,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:41,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:41,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:41,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:28:41,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:41,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:28:41,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:41,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:28:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:41,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:28:41,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:41,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:28:41,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:41,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:41,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:41,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:28:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:41,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:41,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:41,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:28:41,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-27 00:28:41,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:28:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:41,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:28:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:41,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:41,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:41,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:28:41,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:28:41,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:28:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:42,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:28:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:42,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:42,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:28:42,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:42,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:28:42,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 00:28:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:42,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 984 [2020-10-27 00:28:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:42,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:42,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:28:42,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:28:42,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:28:42,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 314 proven. 70 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2020-10-27 00:28:43,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871440274] [2020-10-27 00:28:43,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:28:43,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:28:43,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663145202] [2020-10-27 00:28:43,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:28:43,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:43,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:28:43,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:28:43,315 INFO L87 Difference]: Start difference. First operand 24135 states and 27796 transitions. Second operand 8 states. [2020-10-27 00:28:43,501 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:28:51,207 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-27 00:28:55,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:55,744 INFO L93 Difference]: Finished difference Result 58468 states and 69279 transitions. [2020-10-27 00:28:55,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:28:55,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1060 [2020-10-27 00:28:55,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:56,095 INFO L225 Difference]: With dead ends: 58468 [2020-10-27 00:28:56,095 INFO L226 Difference]: Without dead ends: 35751 [2020-10-27 00:28:56,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:28:56,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35751 states. [2020-10-27 00:28:56,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35751 to 35709. [2020-10-27 00:28:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35709 states. [2020-10-27 00:28:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35709 states to 35709 states and 42238 transitions. [2020-10-27 00:28:56,852 INFO L78 Accepts]: Start accepts. Automaton has 35709 states and 42238 transitions. Word has length 1060 [2020-10-27 00:28:56,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:56,854 INFO L481 AbstractCegarLoop]: Abstraction has 35709 states and 42238 transitions. [2020-10-27 00:28:56,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:28:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 35709 states and 42238 transitions. [2020-10-27 00:28:56,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2020-10-27 00:28:56,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:56,873 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:56,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:28:56,874 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:56,875 INFO L82 PathProgramCache]: Analyzing trace with hash -28400806, now seen corresponding path program 1 times [2020-10-27 00:28:56,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:56,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008221545] [2020-10-27 00:28:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:59,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:02,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:02,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1122 [2020-10-27 00:29:02,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:29:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 00:29:02,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:29:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:29:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:02,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:02,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:02,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:02,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:02,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:29:02,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:02,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:02,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:02,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:02,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:29:02,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:29:02,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:02,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:02,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:02,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:29:02,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:02,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 00:29:02,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:02,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:29:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:02,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:02,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:02,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:29:02,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:02,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:29:02,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:02,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:29:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:03,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:03,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:29:03,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 00:29:03,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:29:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:03,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:03,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:03,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:29:03,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:03,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:29:03,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:03,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:03,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:03,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:29:03,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:03,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:29:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:03,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:03,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:03,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:29:03,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:03,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 00:29:03,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:03,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:03,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:03,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:29:03,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:29:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:03,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:03,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:03,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:29:03,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:03,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:29:03,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:29:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:03,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 274 proven. 121 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2020-10-27 00:29:03,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008221545] [2020-10-27 00:29:03,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:03,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:29:03,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988055084] [2020-10-27 00:29:03,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:03,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:03,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:03,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:03,992 INFO L87 Difference]: Start difference. First operand 35709 states and 42238 transitions. Second operand 7 states. [2020-10-27 00:29:16,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:16,688 INFO L93 Difference]: Finished difference Result 78681 states and 94402 transitions. [2020-10-27 00:29:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:16,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1098 [2020-10-27 00:29:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:16,849 INFO L225 Difference]: With dead ends: 78681 [2020-10-27 00:29:16,849 INFO L226 Difference]: Without dead ends: 44390 [2020-10-27 00:29:16,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:29:16,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44390 states. [2020-10-27 00:29:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44390 to 43640. [2020-10-27 00:29:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43640 states. [2020-10-27 00:29:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43640 states to 43640 states and 51487 transitions. [2020-10-27 00:29:17,925 INFO L78 Accepts]: Start accepts. Automaton has 43640 states and 51487 transitions. Word has length 1098 [2020-10-27 00:29:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:17,926 INFO L481 AbstractCegarLoop]: Abstraction has 43640 states and 51487 transitions. [2020-10-27 00:29:17,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 43640 states and 51487 transitions. [2020-10-27 00:29:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1144 [2020-10-27 00:29:17,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:17,945 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:29:17,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:29:17,945 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:17,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash 567639107, now seen corresponding path program 1 times [2020-10-27 00:29:17,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:17,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539775242] [2020-10-27 00:29:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:20,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:21,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:23,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:23,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1167 [2020-10-27 00:29:23,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:29:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 00:29:23,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:29:23,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:29:23,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:23,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:23,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:23,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:23,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:23,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:29:23,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:23,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:23,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:23,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:23,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:23,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:23,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:23,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:29:23,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:23,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:29:23,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:23,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:23,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:23,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:29:23,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:29:23,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:24,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:29:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:24,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:24,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:29:24,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:24,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:29:24,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:24,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:24,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:24,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:29:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:24,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:24,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:24,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:29:24,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:24,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 00:29:24,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:24,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:29:24,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:24,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:24,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:24,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:29:24,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:29:24,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:24,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:29:24,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:24,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:29:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:24,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:24,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:24,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:29:24,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 00:29:24,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:24,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:29:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:24,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 00:29:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:24,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:24,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:24,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 00:29:24,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:24,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 00:29:24,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:24,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-27 00:29:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:24,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 274 proven. 121 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2020-10-27 00:29:25,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539775242] [2020-10-27 00:29:25,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:25,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:29:25,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821748597] [2020-10-27 00:29:25,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:25,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:25,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:25,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:25,551 INFO L87 Difference]: Start difference. First operand 43640 states and 51487 transitions. Second operand 7 states. [2020-10-27 00:29:40,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:40,692 INFO L93 Difference]: Finished difference Result 98001 states and 116068 transitions. [2020-10-27 00:29:40,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:40,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1143 [2020-10-27 00:29:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:40,913 INFO L225 Difference]: With dead ends: 98001 [2020-10-27 00:29:40,913 INFO L226 Difference]: Without dead ends: 55779 [2020-10-27 00:29:40,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:29:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55779 states. [2020-10-27 00:29:42,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55779 to 54305. [2020-10-27 00:29:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54305 states. [2020-10-27 00:29:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54305 states to 54305 states and 63172 transitions. [2020-10-27 00:29:42,148 INFO L78 Accepts]: Start accepts. Automaton has 54305 states and 63172 transitions. Word has length 1143 [2020-10-27 00:29:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:42,150 INFO L481 AbstractCegarLoop]: Abstraction has 54305 states and 63172 transitions. [2020-10-27 00:29:42,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 54305 states and 63172 transitions. [2020-10-27 00:29:42,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2020-10-27 00:29:42,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:42,169 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:29:42,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:29:42,170 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:42,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:42,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2082732461, now seen corresponding path program 1 times [2020-10-27 00:29:42,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:42,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887411202] [2020-10-27 00:29:42,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:45,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:45,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1177 [2020-10-27 00:29:45,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:45,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3208 [2020-10-27 00:29:45,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:29:45,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:29:45,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:45,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:45,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:45,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:45,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:45,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:29:45,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:45,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:45,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:45,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:45,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:45,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:45,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:45,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:45,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:29:45,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:29:45,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:45,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:46,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:46,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:46,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:29:46,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:46,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:29:46,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:29:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:46,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:46,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:29:46,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:46,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:29:46,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:46,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:46,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:46,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:46,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:29:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:46,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:46,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:29:46,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 00:29:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:46,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:46,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:46,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:46,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:29:46,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:29:46,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:29:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:46,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:46,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:29:46,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:46,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 00:29:46,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:46,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:29:46,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:46,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:29:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:46,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:46,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:46,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:29:46,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:46,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:29:46,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:29:46,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-27 00:29:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:46,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:46,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:46,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:29:46,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:46,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:29:46,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:29:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:46,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 308 proven. 70 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2020-10-27 00:29:47,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887411202] [2020-10-27 00:29:47,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:47,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:29:47,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973731495] [2020-10-27 00:29:47,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:47,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:47,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:47,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:47,331 INFO L87 Difference]: Start difference. First operand 54305 states and 63172 transitions. Second operand 7 states.