/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/systemc/toy.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 01:10:22,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 01:10:22,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 01:10:22,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 01:10:22,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 01:10:22,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 01:10:22,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 01:10:22,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 01:10:22,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 01:10:22,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 01:10:22,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 01:10:22,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 01:10:22,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 01:10:22,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 01:10:22,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 01:10:22,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 01:10:22,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 01:10:22,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 01:10:22,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 01:10:22,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 01:10:22,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 01:10:22,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 01:10:22,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 01:10:22,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 01:10:22,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 01:10:22,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 01:10:22,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 01:10:22,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 01:10:22,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 01:10:22,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 01:10:22,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 01:10:22,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 01:10:22,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 01:10:22,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 01:10:22,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 01:10:22,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 01:10:22,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 01:10:22,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 01:10:22,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 01:10:22,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 01:10:22,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 01:10:22,917 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 [2020-10-28 01:10:22,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 01:10:22,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 01:10:22,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 01:10:22,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 01:10:22,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 01:10:22,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 01:10:22,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 01:10:22,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 01:10:22,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 01:10:22,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 01:10:22,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 01:10:22,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 01:10:22,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 01:10:22,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 01:10:22,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 01:10:22,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 01:10:22,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 01:10:22,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 01:10:22,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 01:10:22,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 01:10:22,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 01:10:22,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:10:22,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 01:10:22,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 01:10:22,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 01:10:22,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 01:10:22,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 01:10:22,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 01:10:22,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 01:10:22,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 01:10:23,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 01:10:23,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 01:10:23,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 01:10:23,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 01:10:23,345 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 01:10:23,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy.cil.c [2020-10-28 01:10:23,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46b78090e/12146da74bea45c9b41c47cd597cb5f8/FLAGec69d3e1f [2020-10-28 01:10:24,183 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 01:10:24,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy.cil.c [2020-10-28 01:10:24,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46b78090e/12146da74bea45c9b41c47cd597cb5f8/FLAGec69d3e1f [2020-10-28 01:10:24,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46b78090e/12146da74bea45c9b41c47cd597cb5f8 [2020-10-28 01:10:24,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 01:10:24,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 01:10:24,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 01:10:24,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 01:10:24,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 01:10:24,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:10:24" (1/1) ... [2020-10-28 01:10:24,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa736ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24, skipping insertion in model container [2020-10-28 01:10:24,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:10:24" (1/1) ... [2020-10-28 01:10:24,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 01:10:24,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 01:10:24,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:10:24,845 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 01:10:24,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:10:24,951 INFO L208 MainTranslator]: Completed translation [2020-10-28 01:10:24,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24 WrapperNode [2020-10-28 01:10:24,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 01:10:24,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 01:10:24,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 01:10:24,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 01:10:24,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24" (1/1) ... [2020-10-28 01:10:24,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24" (1/1) ... [2020-10-28 01:10:25,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24" (1/1) ... [2020-10-28 01:10:25,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24" (1/1) ... [2020-10-28 01:10:25,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24" (1/1) ... [2020-10-28 01:10:25,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24" (1/1) ... [2020-10-28 01:10:25,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24" (1/1) ... [2020-10-28 01:10:25,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 01:10:25,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 01:10:25,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 01:10:25,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 01:10:25,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24" (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 [2020-10-28 01:10:25,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 01:10:25,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 01:10:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 01:10:25,175 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-28 01:10:25,176 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-28 01:10:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-28 01:10:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-28 01:10:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-28 01:10:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-28 01:10:25,178 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-28 01:10:25,179 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-28 01:10:25,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 01:10:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 01:10:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 01:10:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 01:10:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 01:10:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 01:10:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-28 01:10:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-28 01:10:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-28 01:10:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-28 01:10:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-28 01:10:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 01:10:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-28 01:10:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-28 01:10:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 01:10:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 01:10:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 01:10:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 01:10:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 01:10:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 01:10:25,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 01:10:26,109 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 01:10:26,109 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 01:10:26,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:10:26 BoogieIcfgContainer [2020-10-28 01:10:26,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 01:10:26,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 01:10:26,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 01:10:26,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 01:10:26,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:10:24" (1/3) ... [2020-10-28 01:10:26,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e5572f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:10:26, skipping insertion in model container [2020-10-28 01:10:26,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:10:24" (2/3) ... [2020-10-28 01:10:26,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e5572f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:10:26, skipping insertion in model container [2020-10-28 01:10:26,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:10:26" (3/3) ... [2020-10-28 01:10:26,120 INFO L111 eAbstractionObserver]: Analyzing ICFG toy.cil.c [2020-10-28 01:10:26,131 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 01:10:26,136 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 01:10:26,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 01:10:26,177 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 01:10:26,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 01:10:26,178 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 01:10:26,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 01:10:26,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 01:10:26,178 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 01:10:26,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 01:10:26,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 01:10:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2020-10-28 01:10:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 01:10:26,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:26,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:10:26,210 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:26,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:26,217 INFO L82 PathProgramCache]: Analyzing trace with hash 771262890, now seen corresponding path program 1 times [2020-10-28 01:10:26,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:26,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296676075] [2020-10-28 01:10:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:26,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:26,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:26,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:27,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:31,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:31,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 01:10:31,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:10:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:10:31,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 01:10:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:10:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 01:10:31,881 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:10:31,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:10:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:31,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:31,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:31,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:10:31,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:10:31,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:10:31,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296676075] [2020-10-28 01:10:31,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:10:31,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:10:31,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596044400] [2020-10-28 01:10:31,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:10:31,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:10:31,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:10:31,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:10:31,951 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 4 states. [2020-10-28 01:10:33,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:10:33,209 INFO L93 Difference]: Finished difference Result 347 states and 601 transitions. [2020-10-28 01:10:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 01:10:33,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-28 01:10:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:10:33,226 INFO L225 Difference]: With dead ends: 347 [2020-10-28 01:10:33,226 INFO L226 Difference]: Without dead ends: 209 [2020-10-28 01:10:33,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:10:33,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-28 01:10:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 183. [2020-10-28 01:10:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-28 01:10:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 305 transitions. [2020-10-28 01:10:33,304 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 305 transitions. Word has length 48 [2020-10-28 01:10:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:10:33,304 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 305 transitions. [2020-10-28 01:10:33,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:10:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 305 transitions. [2020-10-28 01:10:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 01:10:33,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:33,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:10:33,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 01:10:33,309 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:33,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:33,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1588911340, now seen corresponding path program 1 times [2020-10-28 01:10:33,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:33,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733837726] [2020-10-28 01:10:33,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:34,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:36,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:36,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 01:10:36,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:10:36,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3449 [2020-10-28 01:10:36,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:10:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 01:10:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 01:10:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:37,187 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:10:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:10:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:37,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:37,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:10:37,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:10:37,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:10:37,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733837726] [2020-10-28 01:10:37,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:10:37,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:10:37,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638413749] [2020-10-28 01:10:37,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:10:37,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:10:37,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:10:37,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:10:37,222 INFO L87 Difference]: Start difference. First operand 183 states and 305 transitions. Second operand 4 states. [2020-10-28 01:10:37,599 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:10:39,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:10:39,459 INFO L93 Difference]: Finished difference Result 501 states and 837 transitions. [2020-10-28 01:10:39,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:10:39,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-28 01:10:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:10:39,475 INFO L225 Difference]: With dead ends: 501 [2020-10-28 01:10:39,476 INFO L226 Difference]: Without dead ends: 346 [2020-10-28 01:10:39,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:10:39,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-28 01:10:39,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 325. [2020-10-28 01:10:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2020-10-28 01:10:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 542 transitions. [2020-10-28 01:10:39,560 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 542 transitions. Word has length 48 [2020-10-28 01:10:39,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:10:39,560 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 542 transitions. [2020-10-28 01:10:39,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:10:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 542 transitions. [2020-10-28 01:10:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 01:10:39,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:39,574 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:10:39,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 01:10:39,574 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:39,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:39,576 INFO L82 PathProgramCache]: Analyzing trace with hash -420991226, now seen corresponding path program 1 times [2020-10-28 01:10:39,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:39,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908216137] [2020-10-28 01:10:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:39,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:39,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:39,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:44,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:44,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 01:10:44,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 01:10:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 01:10:44,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 01:10:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:10:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:44,998 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:10:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:10:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:45,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:45,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:10:45,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:45,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:10:45,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:45,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:45,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:45,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:10:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:45,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:45,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:45,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:10:45,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:10:45,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:10:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:10:45,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908216137] [2020-10-28 01:10:45,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:10:45,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 01:10:45,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560589243] [2020-10-28 01:10:45,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 01:10:45,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:10:45,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 01:10:45,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:10:45,117 INFO L87 Difference]: Start difference. First operand 325 states and 542 transitions. Second operand 5 states. [2020-10-28 01:10:45,709 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:10:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:10:48,015 INFO L93 Difference]: Finished difference Result 998 states and 1696 transitions. [2020-10-28 01:10:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 01:10:48,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-28 01:10:48,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:10:48,024 INFO L225 Difference]: With dead ends: 998 [2020-10-28 01:10:48,024 INFO L226 Difference]: Without dead ends: 724 [2020-10-28 01:10:48,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:10:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-28 01:10:48,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 671. [2020-10-28 01:10:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-28 01:10:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1138 transitions. [2020-10-28 01:10:48,149 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1138 transitions. Word has length 68 [2020-10-28 01:10:48,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:10:48,151 INFO L481 AbstractCegarLoop]: Abstraction has 671 states and 1138 transitions. [2020-10-28 01:10:48,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 01:10:48,152 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1138 transitions. [2020-10-28 01:10:48,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 01:10:48,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:48,161 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:10:48,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 01:10:48,162 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:48,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:48,162 INFO L82 PathProgramCache]: Analyzing trace with hash -13610358, now seen corresponding path program 1 times [2020-10-28 01:10:48,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:48,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809763291] [2020-10-28 01:10:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:48,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:48,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:49,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:51,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:51,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:51,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:53,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:53,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 01:10:53,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:10:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 01:10:53,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 01:10:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:10:53,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:53,590 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:10:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:10:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:53,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:53,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:10:53,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:10:53,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:10:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:53,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:53,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:10:53,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:53,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:10:53,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:10:53,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:53,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 01:10:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:53,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:53,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:10:53,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:53,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:10:53,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:53,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:10:53,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:10:53,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:10:53,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:53,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 01:10:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:53,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:53,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:10:53,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:10:53,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:10:53,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:10:53,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:10:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:10:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:10:53,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:10:53,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:10:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 01:10:53,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809763291] [2020-10-28 01:10:53,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:10:53,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 01:10:53,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734620561] [2020-10-28 01:10:53,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:10:53,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:10:53,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:10:53,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:10:53,749 INFO L87 Difference]: Start difference. First operand 671 states and 1138 transitions. Second operand 6 states. [2020-10-28 01:10:54,644 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:10:58,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:10:58,245 INFO L93 Difference]: Finished difference Result 2117 states and 3624 transitions. [2020-10-28 01:10:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 01:10:58,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-28 01:10:58,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:10:58,260 INFO L225 Difference]: With dead ends: 2117 [2020-10-28 01:10:58,260 INFO L226 Difference]: Without dead ends: 1532 [2020-10-28 01:10:58,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:10:58,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2020-10-28 01:10:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1214. [2020-10-28 01:10:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2020-10-28 01:10:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 2035 transitions. [2020-10-28 01:10:58,402 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 2035 transitions. Word has length 93 [2020-10-28 01:10:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:10:58,403 INFO L481 AbstractCegarLoop]: Abstraction has 1214 states and 2035 transitions. [2020-10-28 01:10:58,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:10:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 2035 transitions. [2020-10-28 01:10:58,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 01:10:58,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:10:58,408 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:10:58,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 01:10:58,408 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:10:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:10:58,409 INFO L82 PathProgramCache]: Analyzing trace with hash -686313840, now seen corresponding path program 1 times [2020-10-28 01:10:58,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:10:58,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4481682] [2020-10-28 01:10:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:10:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:10:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:58,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:58,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:59,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:59,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:59,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:59,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:10:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:03,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:03,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 01:11:03,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:11:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:11:03,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:11:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 01:11:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 01:11:03,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:03,771 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:03,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:03,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:03,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:11:03,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:03,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:03,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:11:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:03,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:03,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:03,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:03,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:11:03,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:11:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:11:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:03,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 01:11:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:03,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:03,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:03,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:03,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:03,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:03,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:11:03,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4481682] [2020-10-28 01:11:03,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:03,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 01:11:03,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429363500] [2020-10-28 01:11:03,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:11:03,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:03,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:11:03,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:11:03,910 INFO L87 Difference]: Start difference. First operand 1214 states and 2035 transitions. Second operand 6 states. [2020-10-28 01:11:04,284 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:11:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:07,578 INFO L93 Difference]: Finished difference Result 3542 states and 6044 transitions. [2020-10-28 01:11:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 01:11:07,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-28 01:11:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:07,598 INFO L225 Difference]: With dead ends: 3542 [2020-10-28 01:11:07,599 INFO L226 Difference]: Without dead ends: 2458 [2020-10-28 01:11:07,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:11:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2020-10-28 01:11:07,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2144. [2020-10-28 01:11:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2144 states. [2020-10-28 01:11:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 3626 transitions. [2020-10-28 01:11:07,790 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 3626 transitions. Word has length 77 [2020-10-28 01:11:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:07,790 INFO L481 AbstractCegarLoop]: Abstraction has 2144 states and 3626 transitions. [2020-10-28 01:11:07,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:11:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 3626 transitions. [2020-10-28 01:11:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 01:11:07,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:07,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:11:07,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 01:11:07,799 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:07,800 INFO L82 PathProgramCache]: Analyzing trace with hash -410694093, now seen corresponding path program 1 times [2020-10-28 01:11:07,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:07,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337053573] [2020-10-28 01:11:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:07,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:07,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:09,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:09,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:12,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:12,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:12,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:12,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 01:11:12,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 01:11:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 01:11:12,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:11:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 01:11:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:11:12,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:11:13,201 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:13,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:13,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:13,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:13,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:13,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:13,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 01:11:13,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:13,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:13,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:13,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:11:13,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 01:11:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:13,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:13,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:13,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:13,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:13,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:13,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:13,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:13,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:11:13,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 01:11:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:13,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:13,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:13,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:13,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:11:13,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:11:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:11:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:11:13,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 01:11:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:13,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:13,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:13,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:13,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:13,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:13,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:13,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:11:13,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337053573] [2020-10-28 01:11:13,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:13,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 01:11:13,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947196731] [2020-10-28 01:11:13,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:11:13,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:13,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:11:13,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:11:13,458 INFO L87 Difference]: Start difference. First operand 2144 states and 3626 transitions. Second operand 7 states. [2020-10-28 01:11:14,423 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:11:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:18,582 INFO L93 Difference]: Finished difference Result 6032 states and 10285 transitions. [2020-10-28 01:11:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 01:11:18,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-28 01:11:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:18,616 INFO L225 Difference]: With dead ends: 6032 [2020-10-28 01:11:18,617 INFO L226 Difference]: Without dead ends: 4126 [2020-10-28 01:11:18,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-28 01:11:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2020-10-28 01:11:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3070. [2020-10-28 01:11:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3070 states. [2020-10-28 01:11:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 5157 transitions. [2020-10-28 01:11:18,927 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 5157 transitions. Word has length 91 [2020-10-28 01:11:18,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:18,928 INFO L481 AbstractCegarLoop]: Abstraction has 3070 states and 5157 transitions. [2020-10-28 01:11:18,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 01:11:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 5157 transitions. [2020-10-28 01:11:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 01:11:18,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:18,940 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:11:18,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 01:11:18,940 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:18,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1112331845, now seen corresponding path program 1 times [2020-10-28 01:11:18,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:18,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001616159] [2020-10-28 01:11:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:18,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:19,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:23,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:23,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 01:11:23,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:11:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 01:11:23,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:11:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 01:11:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 01:11:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:24,301 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:24,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:24,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:24,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:24,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:11:24,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:11:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:24,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:24,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:24,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:24,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:11:24,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:11:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:11:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:11:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:24,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 01:11:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:24,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:24,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:24,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:24,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:11:24,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:11:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:24,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:11:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:24,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:24,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:24,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:11:24,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:24,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:24,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:24,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:11:24,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001616159] [2020-10-28 01:11:24,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:24,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 01:11:24,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764843960] [2020-10-28 01:11:24,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:11:24,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:24,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:11:24,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:11:24,675 INFO L87 Difference]: Start difference. First operand 3070 states and 5157 transitions. Second operand 8 states. [2020-10-28 01:11:25,076 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:11:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:30,419 INFO L93 Difference]: Finished difference Result 11046 states and 19135 transitions. [2020-10-28 01:11:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 01:11:30,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-28 01:11:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:30,496 INFO L225 Difference]: With dead ends: 11046 [2020-10-28 01:11:30,496 INFO L226 Difference]: Without dead ends: 8218 [2020-10-28 01:11:30,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-10-28 01:11:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8218 states. [2020-10-28 01:11:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8218 to 5840. [2020-10-28 01:11:31,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5840 states. [2020-10-28 01:11:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 9943 transitions. [2020-10-28 01:11:31,107 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 9943 transitions. Word has length 84 [2020-10-28 01:11:31,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:31,108 INFO L481 AbstractCegarLoop]: Abstraction has 5840 states and 9943 transitions. [2020-10-28 01:11:31,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:11:31,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 9943 transitions. [2020-10-28 01:11:31,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 01:11:31,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:31,139 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:11:31,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 01:11:31,140 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:31,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:31,141 INFO L82 PathProgramCache]: Analyzing trace with hash -798710713, now seen corresponding path program 1 times [2020-10-28 01:11:31,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:31,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302115652] [2020-10-28 01:11:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:35,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:35,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 01:11:35,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:11:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4716 [2020-10-28 01:11:35,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:11:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 01:11:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 01:11:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:36,271 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:36,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:36,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:36,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:36,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:36,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:36,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:11:36,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:11:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:36,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:36,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:36,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:36,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:36,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:11:36,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:11:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:11:36,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:11:36,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:36,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 01:11:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:36,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:36,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:11:36,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:11:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:11:36,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:11:36,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:11:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:36,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:36,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:36,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:36,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:36,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:11:36,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302115652] [2020-10-28 01:11:36,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:36,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 01:11:36,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841218176] [2020-10-28 01:11:36,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:11:36,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:36,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:11:36,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:11:36,546 INFO L87 Difference]: Start difference. First operand 5840 states and 9943 transitions. Second operand 8 states. [2020-10-28 01:11:36,987 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:11:37,144 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-28 01:11:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:44,096 INFO L93 Difference]: Finished difference Result 21943 states and 38520 transitions. [2020-10-28 01:11:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 01:11:44,097 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-28 01:11:44,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:44,273 INFO L225 Difference]: With dead ends: 21943 [2020-10-28 01:11:44,274 INFO L226 Difference]: Without dead ends: 16571 [2020-10-28 01:11:44,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-10-28 01:11:44,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16571 states. [2020-10-28 01:11:45,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16571 to 11718. [2020-10-28 01:11:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11718 states. [2020-10-28 01:11:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11718 states to 11718 states and 20173 transitions. [2020-10-28 01:11:45,732 INFO L78 Accepts]: Start accepts. Automaton has 11718 states and 20173 transitions. Word has length 84 [2020-10-28 01:11:45,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:45,732 INFO L481 AbstractCegarLoop]: Abstraction has 11718 states and 20173 transitions. [2020-10-28 01:11:45,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:11:45,732 INFO L276 IsEmpty]: Start isEmpty. Operand 11718 states and 20173 transitions. [2020-10-28 01:11:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 01:11:45,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:45,828 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:11:45,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 01:11:45,829 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:45,830 INFO L82 PathProgramCache]: Analyzing trace with hash -25647534, now seen corresponding path program 1 times [2020-10-28 01:11:45,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:45,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76200349] [2020-10-28 01:11:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:45,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:45,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:46,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:46,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:46,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:46,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:49,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:49,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 01:11:49,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 01:11:49,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3458 [2020-10-28 01:11:49,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:49,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:11:49,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:11:49,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:11:49,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:49,705 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:49,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:49,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:49,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:49,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:11:49,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:49,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:11:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:49,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:49,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:49,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:49,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:11:49,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:49,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:49,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:11:49,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:49,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:49,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 01:11:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:49,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:49,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:49,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:49,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:49,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:49,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:49,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 01:11:49,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76200349] [2020-10-28 01:11:49,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:49,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 01:11:49,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873899508] [2020-10-28 01:11:49,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 01:11:49,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:49,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 01:11:49,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 01:11:49,842 INFO L87 Difference]: Start difference. First operand 11718 states and 20173 transitions. Second operand 6 states. [2020-10-28 01:11:50,259 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-28 01:11:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:11:52,688 INFO L93 Difference]: Finished difference Result 25420 states and 43124 transitions. [2020-10-28 01:11:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 01:11:52,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-28 01:11:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:11:52,784 INFO L225 Difference]: With dead ends: 25420 [2020-10-28 01:11:52,784 INFO L226 Difference]: Without dead ends: 13988 [2020-10-28 01:11:52,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-28 01:11:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13988 states. [2020-10-28 01:11:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13988 to 11254. [2020-10-28 01:11:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11254 states. [2020-10-28 01:11:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11254 states to 11254 states and 19283 transitions. [2020-10-28 01:11:54,117 INFO L78 Accepts]: Start accepts. Automaton has 11254 states and 19283 transitions. Word has length 77 [2020-10-28 01:11:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:11:54,117 INFO L481 AbstractCegarLoop]: Abstraction has 11254 states and 19283 transitions. [2020-10-28 01:11:54,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 01:11:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 11254 states and 19283 transitions. [2020-10-28 01:11:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 01:11:54,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:11:54,184 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 01:11:54,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 01:11:54,184 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:11:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:11:54,185 INFO L82 PathProgramCache]: Analyzing trace with hash -318160806, now seen corresponding path program 1 times [2020-10-28 01:11:54,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:11:54,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766604719] [2020-10-28 01:11:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:11:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:54,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:57,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:57,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 01:11:57,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:11:57,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3510 [2020-10-28 01:11:57,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:11:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 01:11:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 01:11:57,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:58,090 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:11:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:11:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:58,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:58,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:58,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:11:58,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:11:58,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:58,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:11:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:58,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:58,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:11:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:58,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:58,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:11:58,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:58,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:11:58,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:11:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:11:58,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 01:11:58,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 01:11:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:11:58,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:11:58,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:11:58,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:11:58,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:11:58,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:11:58,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:11:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:11:58,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:11:58,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:11:58,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:11:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 01:11:58,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766604719] [2020-10-28 01:11:58,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:11:58,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 01:11:58,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430914717] [2020-10-28 01:11:58,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:11:58,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:11:58,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:11:58,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:11:58,285 INFO L87 Difference]: Start difference. First operand 11254 states and 19283 transitions. Second operand 8 states. [2020-10-28 01:11:58,707 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:12:01,727 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:12:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:12:05,262 INFO L93 Difference]: Finished difference Result 33236 states and 57378 transitions. [2020-10-28 01:12:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 01:12:05,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-28 01:12:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:12:05,406 INFO L225 Difference]: With dead ends: 33236 [2020-10-28 01:12:05,406 INFO L226 Difference]: Without dead ends: 18928 [2020-10-28 01:12:05,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 01:12:05,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18928 states. [2020-10-28 01:12:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18928 to 15859. [2020-10-28 01:12:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15859 states. [2020-10-28 01:12:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15859 states to 15859 states and 27011 transitions. [2020-10-28 01:12:07,339 INFO L78 Accepts]: Start accepts. Automaton has 15859 states and 27011 transitions. Word has length 78 [2020-10-28 01:12:07,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:12:07,339 INFO L481 AbstractCegarLoop]: Abstraction has 15859 states and 27011 transitions. [2020-10-28 01:12:07,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:12:07,339 INFO L276 IsEmpty]: Start isEmpty. Operand 15859 states and 27011 transitions. [2020-10-28 01:12:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 01:12:07,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:12:07,485 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-28 01:12:07,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 01:12:07,486 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:12:07,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:12:07,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1303772, now seen corresponding path program 1 times [2020-10-28 01:12:07,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:12:07,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656563272] [2020-10-28 01:12:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:12:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:07,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:07,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:07,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:07,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:12,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:12,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 01:12:12,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:12:12,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 01:12:12,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 01:12:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 01:12:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:12,973 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:12:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:12:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:12,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:12,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:12,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:12:12,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:12,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:12:12,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:12,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:12,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:12,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:13,121 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-28 01:12:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:12:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:13,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:13,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 01:12:13,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:13,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 01:12:13,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:12:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:13,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:12:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:13,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:13,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:13,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:13,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:13,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:13,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:13,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 01:12:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:13,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:13,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:13,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:13,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:12:13,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:13,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 01:12:13,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:13,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 01:12:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:13,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:13,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:12:13,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:12:13,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:12:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:13,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:13,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 01:12:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:13,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:13,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:13,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:13,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:13,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:13,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:13,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:12:13,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:13,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 01:12:13,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656563272] [2020-10-28 01:12:13,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:12:13,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 01:12:13,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061310204] [2020-10-28 01:12:13,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 01:12:13,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:12:13,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 01:12:13,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 01:12:13,342 INFO L87 Difference]: Start difference. First operand 15859 states and 27011 transitions. Second operand 8 states. [2020-10-28 01:12:14,075 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:12:19,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:12:19,865 INFO L93 Difference]: Finished difference Result 40340 states and 70016 transitions. [2020-10-28 01:12:19,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 01:12:19,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 130 [2020-10-28 01:12:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:12:20,048 INFO L225 Difference]: With dead ends: 40340 [2020-10-28 01:12:20,048 INFO L226 Difference]: Without dead ends: 24710 [2020-10-28 01:12:20,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 01:12:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24710 states. [2020-10-28 01:12:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24710 to 17610. [2020-10-28 01:12:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17610 states. [2020-10-28 01:12:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17610 states to 17610 states and 29646 transitions. [2020-10-28 01:12:21,846 INFO L78 Accepts]: Start accepts. Automaton has 17610 states and 29646 transitions. Word has length 130 [2020-10-28 01:12:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:12:21,847 INFO L481 AbstractCegarLoop]: Abstraction has 17610 states and 29646 transitions. [2020-10-28 01:12:21,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 01:12:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 17610 states and 29646 transitions. [2020-10-28 01:12:21,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 01:12:21,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:12:21,946 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:12:21,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 01:12:21,946 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:12:21,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:12:21,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1580092927, now seen corresponding path program 1 times [2020-10-28 01:12:21,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:12:21,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789073103] [2020-10-28 01:12:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:12:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:21,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:26,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:26,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 01:12:26,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 01:12:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 01:12:26,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 117 [2020-10-28 01:12:26,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 01:12:26,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:27,355 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:12:27,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:12:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:27,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:27,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:27,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:12:27,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:12:27,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:27,500 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-28 01:12:27,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:12:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:27,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:27,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 01:12:27,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:27,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:12:27,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:27,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:12:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:27,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:27,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:27,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:27,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:27,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:27,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:27,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 01:12:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:27,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:27,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:27,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:27,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:27,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:27,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:27,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:27,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 01:12:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:27,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:27,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 01:12:27,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:27,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:12:27,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:12:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 01:12:27,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:27,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 01:12:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:27,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:27,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:27,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:27,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:27,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:12:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:27,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 01:12:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:27,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:27,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:27,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:27,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:27,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:12:27,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 01:12:27,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789073103] [2020-10-28 01:12:27,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:12:27,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 01:12:27,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411377400] [2020-10-28 01:12:27,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:12:27,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:12:27,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:12:27,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:12:27,790 INFO L87 Difference]: Start difference. First operand 17610 states and 29646 transitions. Second operand 9 states. [2020-10-28 01:12:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:12:33,885 INFO L93 Difference]: Finished difference Result 44447 states and 75717 transitions. [2020-10-28 01:12:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 01:12:33,886 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2020-10-28 01:12:33,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:12:34,053 INFO L225 Difference]: With dead ends: 44447 [2020-10-28 01:12:34,053 INFO L226 Difference]: Without dead ends: 26950 [2020-10-28 01:12:34,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-28 01:12:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26950 states. [2020-10-28 01:12:35,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26950 to 16923. [2020-10-28 01:12:35,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16923 states. [2020-10-28 01:12:36,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16923 states to 16923 states and 28097 transitions. [2020-10-28 01:12:36,020 INFO L78 Accepts]: Start accepts. Automaton has 16923 states and 28097 transitions. Word has length 140 [2020-10-28 01:12:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:12:36,021 INFO L481 AbstractCegarLoop]: Abstraction has 16923 states and 28097 transitions. [2020-10-28 01:12:36,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:12:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 16923 states and 28097 transitions. [2020-10-28 01:12:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 01:12:36,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:12:36,113 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:12:36,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 01:12:36,113 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:12:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:12:36,114 INFO L82 PathProgramCache]: Analyzing trace with hash -765462931, now seen corresponding path program 1 times [2020-10-28 01:12:36,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:12:36,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865952078] [2020-10-28 01:12:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:12:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:36,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:36,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:36,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:37,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:37,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:37,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:41,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:41,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 01:12:41,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:12:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 01:12:41,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 01:12:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:12:41,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:41,515 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:12:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:12:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:41,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:41,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:41,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:12:41,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:12:41,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:41,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:41,661 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-28 01:12:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:12:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:41,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:41,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:41,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 01:12:41,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:12:41,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 01:12:41,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 01:12:41,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 01:12:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:12:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:41,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:41,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:41,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:41,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:12:41,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:41,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 01:12:41,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:12:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:41,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:41,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:12:41,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:41,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:12:41,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:41,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:12:41,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 01:12:41,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:12:41,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:41,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 01:12:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:41,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:41,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:12:41,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:41,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:12:41,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 01:12:41,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:41,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 01:12:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:42,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:42,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:42,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:42,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:42,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:42,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:12:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:42,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 01:12:42,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865952078] [2020-10-28 01:12:42,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:12:42,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 01:12:42,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712459346] [2020-10-28 01:12:42,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 01:12:42,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:12:42,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 01:12:42,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 01:12:42,053 INFO L87 Difference]: Start difference. First operand 16923 states and 28097 transitions. Second operand 10 states. [2020-10-28 01:12:42,480 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:12:42,914 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-28 01:12:43,097 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-28 01:12:45,029 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-28 01:12:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:12:51,052 INFO L93 Difference]: Finished difference Result 41886 states and 69019 transitions. [2020-10-28 01:12:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 01:12:51,053 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-10-28 01:12:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:12:51,176 INFO L225 Difference]: With dead ends: 41886 [2020-10-28 01:12:51,176 INFO L226 Difference]: Without dead ends: 25028 [2020-10-28 01:12:51,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2020-10-28 01:12:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25028 states. [2020-10-28 01:12:52,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25028 to 17297. [2020-10-28 01:12:52,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17297 states. [2020-10-28 01:12:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17297 states to 17297 states and 27945 transitions. [2020-10-28 01:12:53,019 INFO L78 Accepts]: Start accepts. Automaton has 17297 states and 27945 transitions. Word has length 132 [2020-10-28 01:12:53,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:12:53,020 INFO L481 AbstractCegarLoop]: Abstraction has 17297 states and 27945 transitions. [2020-10-28 01:12:53,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 01:12:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 17297 states and 27945 transitions. [2020-10-28 01:12:53,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 01:12:53,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:12:53,107 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-28 01:12:53,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 01:12:53,108 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:12:53,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:12:53,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1703337770, now seen corresponding path program 1 times [2020-10-28 01:12:53,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:12:53,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429369442] [2020-10-28 01:12:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:12:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:53,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:53,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:53,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:53,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:53,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:54,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:58,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 01:12:58,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:12:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 01:12:58,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:12:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 01:12:58,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:12:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:58,511 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:12:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:12:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:58,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:12:58,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:12:58,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:58,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:58,663 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-28 01:12:58,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:12:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:58,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:58,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 01:12:58,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:58,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:12:58,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:58,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:58,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:12:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:58,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:58,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:58,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:58,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:58,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:58,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:58,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:58,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:58,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 01:12:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:58,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:58,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:58,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:58,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:58,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:58,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:58,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:12:58,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:58,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:58,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 01:12:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:58,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:58,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 01:12:58,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:58,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:58,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 01:12:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:58,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 01:12:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:58,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:58,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:12:58,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:12:58,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:12:58,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 01:12:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:12:58,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:12:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:12:58,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:12:58,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:12:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:12:58,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:12:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:12:58,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:12:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:12:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:12:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 01:12:58,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429369442] [2020-10-28 01:12:58,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:12:58,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 01:12:58,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629370096] [2020-10-28 01:12:58,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:12:58,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:12:58,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:12:58,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:12:58,940 INFO L87 Difference]: Start difference. First operand 17297 states and 27945 transitions. Second operand 9 states. [2020-10-28 01:12:59,803 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 01:13:07,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:13:07,537 INFO L93 Difference]: Finished difference Result 53938 states and 88761 transitions. [2020-10-28 01:13:07,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 01:13:07,538 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-10-28 01:13:07,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:13:07,680 INFO L225 Difference]: With dead ends: 53938 [2020-10-28 01:13:07,681 INFO L226 Difference]: Without dead ends: 32321 [2020-10-28 01:13:07,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:13:07,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32321 states. [2020-10-28 01:13:09,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32321 to 19527. [2020-10-28 01:13:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19527 states. [2020-10-28 01:13:10,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19527 states to 19527 states and 30608 transitions. [2020-10-28 01:13:10,074 INFO L78 Accepts]: Start accepts. Automaton has 19527 states and 30608 transitions. Word has length 143 [2020-10-28 01:13:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:13:10,074 INFO L481 AbstractCegarLoop]: Abstraction has 19527 states and 30608 transitions. [2020-10-28 01:13:10,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:13:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 19527 states and 30608 transitions. [2020-10-28 01:13:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 01:13:10,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:13:10,133 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:13:10,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 01:13:10,133 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:13:10,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:13:10,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1897644347, now seen corresponding path program 1 times [2020-10-28 01:13:10,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:13:10,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65862414] [2020-10-28 01:13:10,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:13:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:10,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:10,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:10,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:10,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:10,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:10,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:15,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:15,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 01:13:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 01:13:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 01:13:15,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:13:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 01:13:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 01:13:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:15,535 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:13:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:13:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:15,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:15,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:13:15,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:13:15,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:15,684 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-28 01:13:15,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 01:13:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:15,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:15,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 01:13:15,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 01:13:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:13:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 01:13:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:15,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:13:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:15,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:15,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:15,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:15,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:13:15,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 01:13:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:15,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:15,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:15,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:13:15,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 01:13:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:15,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:15,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:15,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 01:13:15,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:15,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:13:15,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 01:13:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:15,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 01:13:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:15,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:15,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:15,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:13:15,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:13:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:15,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 01:13:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:15,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:15,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:13:15,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:13:15,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:13:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 01:13:15,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65862414] [2020-10-28 01:13:15,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:13:15,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 01:13:15,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179175750] [2020-10-28 01:13:15,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:13:15,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:13:15,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:13:15,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:13:15,957 INFO L87 Difference]: Start difference. First operand 19527 states and 30608 transitions. Second operand 9 states. [2020-10-28 01:13:16,374 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:13:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:13:26,147 INFO L93 Difference]: Finished difference Result 70701 states and 110093 transitions. [2020-10-28 01:13:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 01:13:26,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2020-10-28 01:13:26,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:13:26,387 INFO L225 Difference]: With dead ends: 70701 [2020-10-28 01:13:26,387 INFO L226 Difference]: Without dead ends: 51395 [2020-10-28 01:13:26,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-10-28 01:13:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51395 states. [2020-10-28 01:13:29,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51395 to 30571. [2020-10-28 01:13:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30571 states. [2020-10-28 01:13:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30571 states to 30571 states and 47031 transitions. [2020-10-28 01:13:29,625 INFO L78 Accepts]: Start accepts. Automaton has 30571 states and 47031 transitions. Word has length 141 [2020-10-28 01:13:29,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:13:29,626 INFO L481 AbstractCegarLoop]: Abstraction has 30571 states and 47031 transitions. [2020-10-28 01:13:29,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:13:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 30571 states and 47031 transitions. [2020-10-28 01:13:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 01:13:29,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:13:29,716 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-28 01:13:29,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 01:13:29,717 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:13:29,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:13:29,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1527844612, now seen corresponding path program 1 times [2020-10-28 01:13:29,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:13:29,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209064279] [2020-10-28 01:13:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:13:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:29,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:30,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:30,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:30,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:34,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:34,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 01:13:34,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:13:34,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 01:13:34,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:13:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-28 01:13:34,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 01:13:34,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:35,119 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 01:13:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:13:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:35,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:35,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:35,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:13:35,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:13:35,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:35,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:35,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:35,265 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-10-28 01:13:35,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 01:13:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:35,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:35,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:35,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 01:13:35,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:35,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:13:35,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:35,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:35,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-28 01:13:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:35,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:35,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:35,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:35,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:13:35,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:35,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:35,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 01:13:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:35,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:35,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:35,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:35,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:13:35,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:35,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:35,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:35,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:35,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:35,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 01:13:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:35,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:35,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:35,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 01:13:35,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:13:35,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:13:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 01:13:35,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:35,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 01:13:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:35,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:35,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:35,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:35,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:13:35,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:13:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:13:35,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:13:35,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:35,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 01:13:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:35,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:35,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:35,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 01:13:35,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:35,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:13:35,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 01:13:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:35,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 01:13:35,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209064279] [2020-10-28 01:13:35,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:13:35,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 01:13:35,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476146088] [2020-10-28 01:13:35,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 01:13:35,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:13:35,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 01:13:35,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-28 01:13:35,559 INFO L87 Difference]: Start difference. First operand 30571 states and 47031 transitions. Second operand 10 states. [2020-10-28 01:13:36,400 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:13:38,364 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 01:13:49,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:13:49,858 INFO L93 Difference]: Finished difference Result 113270 states and 179501 transitions. [2020-10-28 01:13:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 01:13:49,859 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-10-28 01:13:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:13:50,554 INFO L225 Difference]: With dead ends: 113270 [2020-10-28 01:13:50,554 INFO L226 Difference]: Without dead ends: 84235 [2020-10-28 01:13:50,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2020-10-28 01:13:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84235 states.