/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:01:21,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:01:21,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:01:22,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:01:22,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:01:22,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:01:22,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:01:22,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:01:22,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:01:22,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:01:22,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:01:22,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:01:22,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:01:22,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:01:22,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:01:22,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:01:22,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:01:22,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:01:22,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:01:22,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:01:22,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:01:22,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:01:22,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:01:22,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:01:22,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:01:22,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:01:22,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:01:22,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:01:22,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:01:22,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:01:22,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:01:22,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:01:22,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:01:22,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:01:22,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:01:22,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:01:22,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:01:22,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:01:22,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:01:22,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:01:22,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:01:22,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:01:22,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:01:22,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:01:22,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:01:22,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:01:22,153 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:01:22,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:01:22,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:01:22,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:01:22,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:01:22,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:01:22,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:01:22,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:01:22,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:01:22,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:01:22,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:01:22,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:01:22,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:01:22,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:01:22,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:01:22,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:01:22,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:01:22,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:01:22,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:01:22,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:01:22,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:01:22,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:01:22,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:01:22,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:01:22,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:01:22,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:01:22,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:01:22,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:01:22,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:01:22,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:01:22,675 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:01:22,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55.c [2020-10-29 05:01:22,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7981e2a20/3e5cfaead5cb47fbbe34c2cdc437eaaa/FLAG1caf77bfc [2020-10-29 05:01:23,656 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:01:23,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label55.c [2020-10-29 05:01:23,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7981e2a20/3e5cfaead5cb47fbbe34c2cdc437eaaa/FLAG1caf77bfc [2020-10-29 05:01:23,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7981e2a20/3e5cfaead5cb47fbbe34c2cdc437eaaa [2020-10-29 05:01:23,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:01:23,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:01:23,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:01:23,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:01:23,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:01:23,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:01:23" (1/1) ... [2020-10-29 05:01:23,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34350f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:23, skipping insertion in model container [2020-10-29 05:01:23,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:01:23" (1/1) ... [2020-10-29 05:01:23,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:01:23,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:01:24,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:01:24,752 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:01:25,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:01:25,121 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:01:25,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:25 WrapperNode [2020-10-29 05:01:25,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:01:25,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:01:25,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:01:25,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:01:25,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:25" (1/1) ... [2020-10-29 05:01:25,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:25" (1/1) ... [2020-10-29 05:01:25,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:25" (1/1) ... [2020-10-29 05:01:25,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:25" (1/1) ... [2020-10-29 05:01:25,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:25" (1/1) ... [2020-10-29 05:01:25,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:25" (1/1) ... [2020-10-29 05:01:25,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:25" (1/1) ... [2020-10-29 05:01:25,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:01:25,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:01:25,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:01:25,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:01:25,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:01:25,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:01:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:01:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:01:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:01:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:01:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:01:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:01:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:01:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:01:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:01:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:01:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:01:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:01:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:01:25,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:01:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:01:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:01:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:01:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:01:27,861 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:01:27,862 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:01:27,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:01:27 BoogieIcfgContainer [2020-10-29 05:01:27,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:01:27,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:01:27,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:01:27,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:01:27,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:01:23" (1/3) ... [2020-10-29 05:01:27,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c454ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:01:27, skipping insertion in model container [2020-10-29 05:01:27,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:01:25" (2/3) ... [2020-10-29 05:01:27,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c454ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:01:27, skipping insertion in model container [2020-10-29 05:01:27,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:01:27" (3/3) ... [2020-10-29 05:01:27,874 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label55.c [2020-10-29 05:01:27,887 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:01:27,893 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:01:27,908 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:01:27,939 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:01:27,940 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:01:27,940 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:01:27,940 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:01:27,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:01:27,940 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:01:27,940 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:01:27,940 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:01:27,966 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 05:01:27,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 05:01:27,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:27,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:27,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:27,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:27,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1328892236, now seen corresponding path program 1 times [2020-10-29 05:01:28,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:28,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034372998] [2020-10-29 05:01:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:28,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:33,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:33,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 05:01:33,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:33,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4895 [2020-10-29 05:01:33,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:33,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:01:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:01:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 05:01:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:01:33,912 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:33,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:33,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:33,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:33,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:33,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:33,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 05:01:33,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:33,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:33,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:33,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:33,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:01:33,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:34,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034372998] [2020-10-29 05:01:34,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:01:34,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:01:34,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794170363] [2020-10-29 05:01:34,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:34,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:34,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:34,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:34,134 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 5 states. [2020-10-29 05:01:34,412 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:38,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:38,381 INFO L93 Difference]: Finished difference Result 898 states and 1560 transitions. [2020-10-29 05:01:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:38,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-29 05:01:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:38,406 INFO L225 Difference]: With dead ends: 898 [2020-10-29 05:01:38,406 INFO L226 Difference]: Without dead ends: 489 [2020-10-29 05:01:38,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-10-29 05:01:38,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 471. [2020-10-29 05:01:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-29 05:01:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 756 transitions. [2020-10-29 05:01:38,519 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 756 transitions. Word has length 169 [2020-10-29 05:01:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:38,520 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 756 transitions. [2020-10-29 05:01:38,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 756 transitions. [2020-10-29 05:01:38,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 05:01:38,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:38,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:38,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:01:38,529 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:38,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:38,530 INFO L82 PathProgramCache]: Analyzing trace with hash -966131141, now seen corresponding path program 1 times [2020-10-29 05:01:38,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:38,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683044815] [2020-10-29 05:01:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:39,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:40,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:41,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:41,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-29 05:01:41,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:41,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2672 [2020-10-29 05:01:41,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:41,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:01:41,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 05:01:41,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:41,706 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:41,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:41,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:41,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:41,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:41,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:01:41,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:41,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:41,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 05:01:41,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:41,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:41,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:01:41,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:41,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:01:41,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:41,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:41,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:01:41,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:42,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683044815] [2020-10-29 05:01:42,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:42,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:42,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717320070] [2020-10-29 05:01:42,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:42,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:42,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:42,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:42,022 INFO L87 Difference]: Start difference. First operand 471 states and 756 transitions. Second operand 5 states. [2020-10-29 05:01:42,487 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:01:45,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:45,802 INFO L93 Difference]: Finished difference Result 1363 states and 2221 transitions. [2020-10-29 05:01:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:45,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-29 05:01:45,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:45,811 INFO L225 Difference]: With dead ends: 1363 [2020-10-29 05:01:45,811 INFO L226 Difference]: Without dead ends: 898 [2020-10-29 05:01:45,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-29 05:01:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 892. [2020-10-29 05:01:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-10-29 05:01:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1266 transitions. [2020-10-29 05:01:45,874 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1266 transitions. Word has length 178 [2020-10-29 05:01:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:45,875 INFO L481 AbstractCegarLoop]: Abstraction has 892 states and 1266 transitions. [2020-10-29 05:01:45,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1266 transitions. [2020-10-29 05:01:45,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-29 05:01:45,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:45,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:45,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:01:45,885 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:45,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:45,885 INFO L82 PathProgramCache]: Analyzing trace with hash 728179168, now seen corresponding path program 1 times [2020-10-29 05:01:45,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:45,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074716566] [2020-10-29 05:01:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:46,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:48,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:48,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 05:01:48,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:01:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2924 [2020-10-29 05:01:48,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:48,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:01:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 05:01:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:49,213 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:49,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:49,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:49,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:49,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:01:49,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:49,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:49,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:49,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:49,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:49,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:01:49,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:01:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:01:49,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:49,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:01:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:49,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074716566] [2020-10-29 05:01:49,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:49,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:49,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52089617] [2020-10-29 05:01:49,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:49,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:49,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:49,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:49,463 INFO L87 Difference]: Start difference. First operand 892 states and 1266 transitions. Second operand 5 states. [2020-10-29 05:01:49,932 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:01:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:01:53,101 INFO L93 Difference]: Finished difference Result 2622 states and 3751 transitions. [2020-10-29 05:01:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:01:53,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-29 05:01:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:01:53,113 INFO L225 Difference]: With dead ends: 2622 [2020-10-29 05:01:53,114 INFO L226 Difference]: Without dead ends: 896 [2020-10-29 05:01:53,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:01:53,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-29 05:01:53,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 892. [2020-10-29 05:01:53,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-10-29 05:01:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1265 transitions. [2020-10-29 05:01:53,200 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1265 transitions. Word has length 179 [2020-10-29 05:01:53,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:01:53,201 INFO L481 AbstractCegarLoop]: Abstraction has 892 states and 1265 transitions. [2020-10-29 05:01:53,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:01:53,201 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1265 transitions. [2020-10-29 05:01:53,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-29 05:01:53,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:01:53,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:01:53,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:01:53,209 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:01:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:01:53,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1418010658, now seen corresponding path program 1 times [2020-10-29 05:01:53,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:01:53,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743538994] [2020-10-29 05:01:53,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:01:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:53,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:56,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:56,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 05:01:56,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:01:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3076 [2020-10-29 05:01:56,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:56,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:01:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:01:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 05:01:56,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:01:56,783 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:01:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:01:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:56,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:56,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:01:56,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:01:56,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:56,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:01:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:01:56,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:56,953 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:01:56,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:01:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:01:56,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:01:56,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:01:56,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:01:56,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:01:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:01:56,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:01:56,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:01:56,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:01:56,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:01:56,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:01:56,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:01:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:01:57,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743538994] [2020-10-29 05:01:57,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:01:57,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:01:57,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979415063] [2020-10-29 05:01:57,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:01:57,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:01:57,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:01:57,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:01:57,141 INFO L87 Difference]: Start difference. First operand 892 states and 1265 transitions. Second operand 5 states. [2020-10-29 05:01:57,419 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:01,059 INFO L93 Difference]: Finished difference Result 2202 states and 3250 transitions. [2020-10-29 05:02:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:01,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-29 05:02:01,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:01,072 INFO L225 Difference]: With dead ends: 2202 [2020-10-29 05:02:01,072 INFO L226 Difference]: Without dead ends: 1316 [2020-10-29 05:02:01,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:01,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2020-10-29 05:02:01,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1310. [2020-10-29 05:02:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-10-29 05:02:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1909 transitions. [2020-10-29 05:02:01,135 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1909 transitions. Word has length 179 [2020-10-29 05:02:01,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:01,137 INFO L481 AbstractCegarLoop]: Abstraction has 1310 states and 1909 transitions. [2020-10-29 05:02:01,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:02:01,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1909 transitions. [2020-10-29 05:02:01,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 05:02:01,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:01,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:01,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:02:01,143 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:01,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:01,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1716964693, now seen corresponding path program 1 times [2020-10-29 05:02:01,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:01,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033441844] [2020-10-29 05:02:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:01,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:01,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-29 05:02:01,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-10-29 05:02:01,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:01,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 05:02:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:02,215 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:02,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:02,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:02,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:02,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 05:02:02,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:02,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:02,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:02,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:02,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:02:02,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:02,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 05:02:02,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:02,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:02,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:02:02,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:02:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:02:02,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033441844] [2020-10-29 05:02:02,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:02:02,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 05:02:02,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146739996] [2020-10-29 05:02:02,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:02:02,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:02,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:02:02,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:02:02,611 INFO L87 Difference]: Start difference. First operand 1310 states and 1909 transitions. Second operand 7 states. [2020-10-29 05:02:02,860 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 05:02:06,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:06,351 INFO L93 Difference]: Finished difference Result 3934 states and 5847 transitions. [2020-10-29 05:02:06,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 05:02:06,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-29 05:02:06,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:06,369 INFO L225 Difference]: With dead ends: 3934 [2020-10-29 05:02:06,370 INFO L226 Difference]: Without dead ends: 2630 [2020-10-29 05:02:06,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 05:02:06,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-10-29 05:02:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2611. [2020-10-29 05:02:06,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2611 states. [2020-10-29 05:02:06,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3846 transitions. [2020-10-29 05:02:06,493 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3846 transitions. Word has length 185 [2020-10-29 05:02:06,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:06,494 INFO L481 AbstractCegarLoop]: Abstraction has 2611 states and 3846 transitions. [2020-10-29 05:02:06,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:02:06,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3846 transitions. [2020-10-29 05:02:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 05:02:06,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:06,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:06,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:02:06,505 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:06,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:06,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1733059977, now seen corresponding path program 1 times [2020-10-29 05:02:06,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:06,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583526] [2020-10-29 05:02:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:07,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:08,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:08,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 05:02:08,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:02:08,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2081 [2020-10-29 05:02:08,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:08,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:08,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 05:02:08,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 05:02:08,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:09,000 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:09,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:09,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:09,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:09,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:09,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:09,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:02:09,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:09,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:09,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:09,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:09,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:09,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:09,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:09,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:02:09,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:09,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 05:02:09,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:09,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:09,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:02:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:02:09,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583526] [2020-10-29 05:02:09,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:09,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:02:09,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236257502] [2020-10-29 05:02:09,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:02:09,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:09,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:02:09,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:02:09,239 INFO L87 Difference]: Start difference. First operand 2611 states and 3846 transitions. Second operand 5 states. [2020-10-29 05:02:09,641 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:13,160 INFO L93 Difference]: Finished difference Result 7788 states and 11819 transitions. [2020-10-29 05:02:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:13,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-29 05:02:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:13,195 INFO L225 Difference]: With dead ends: 7788 [2020-10-29 05:02:13,196 INFO L226 Difference]: Without dead ends: 5183 [2020-10-29 05:02:13,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2020-10-29 05:02:13,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5141. [2020-10-29 05:02:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5141 states. [2020-10-29 05:02:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 7691 transitions. [2020-10-29 05:02:13,418 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 7691 transitions. Word has length 192 [2020-10-29 05:02:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:13,418 INFO L481 AbstractCegarLoop]: Abstraction has 5141 states and 7691 transitions. [2020-10-29 05:02:13,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:02:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 7691 transitions. [2020-10-29 05:02:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 05:02:13,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:13,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:13,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:02:13,440 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:13,440 INFO L82 PathProgramCache]: Analyzing trace with hash -155221084, now seen corresponding path program 1 times [2020-10-29 05:02:13,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:13,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496704867] [2020-10-29 05:02:13,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:13,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:14,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:15,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:16,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:16,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 05:02:16,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:02:16,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3365 [2020-10-29 05:02:16,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:16,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 05:02:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 05:02:16,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:02:17,283 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:17,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:17,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:17,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:17,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:17,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:02:17,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:17,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:17,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:17,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:17,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:17,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:17,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:17,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:17,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:17,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 05:02:17,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:17,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 05:02:17,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:17,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:17,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 05:02:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:02:17,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496704867] [2020-10-29 05:02:17,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:17,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:02:17,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936472137] [2020-10-29 05:02:17,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:02:17,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:17,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:02:17,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:02:17,746 INFO L87 Difference]: Start difference. First operand 5141 states and 7691 transitions. Second operand 5 states. [2020-10-29 05:02:18,528 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-29 05:02:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:21,235 INFO L93 Difference]: Finished difference Result 10443 states and 15754 transitions. [2020-10-29 05:02:21,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:21,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-29 05:02:21,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:21,262 INFO L225 Difference]: With dead ends: 10443 [2020-10-29 05:02:21,262 INFO L226 Difference]: Without dead ends: 5223 [2020-10-29 05:02:21,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:21,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2020-10-29 05:02:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 5205. [2020-10-29 05:02:21,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5205 states. [2020-10-29 05:02:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 7777 transitions. [2020-10-29 05:02:21,471 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 7777 transitions. Word has length 205 [2020-10-29 05:02:21,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:21,472 INFO L481 AbstractCegarLoop]: Abstraction has 5205 states and 7777 transitions. [2020-10-29 05:02:21,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:02:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 7777 transitions. [2020-10-29 05:02:21,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 05:02:21,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:21,491 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:21,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:02:21,492 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:21,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:21,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1087117496, now seen corresponding path program 1 times [2020-10-29 05:02:21,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:21,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873367634] [2020-10-29 05:02:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:23,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:23,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:23,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-29 05:02:23,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:02:23,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2145 [2020-10-29 05:02:23,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:23,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 05:02:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 05:02:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:24,000 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:24,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:24,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:24,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:24,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:24,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:24,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:02:24,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:24,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:24,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:02:24,148 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:02:24,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:24,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:24,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 05:02:24,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:24,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 05:02:24,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:24,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 05:02:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:02:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:02:24,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873367634] [2020-10-29 05:02:24,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:24,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:02:24,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268544704] [2020-10-29 05:02:24,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:02:24,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:24,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:02:24,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:02:24,509 INFO L87 Difference]: Start difference. First operand 5205 states and 7777 transitions. Second operand 5 states. [2020-10-29 05:02:24,819 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:28,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:28,049 INFO L93 Difference]: Finished difference Result 14858 states and 23075 transitions. [2020-10-29 05:02:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:02:28,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-29 05:02:28,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:28,116 INFO L225 Difference]: With dead ends: 14858 [2020-10-29 05:02:28,116 INFO L226 Difference]: Without dead ends: 9659 [2020-10-29 05:02:28,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:02:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9659 states. [2020-10-29 05:02:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9659 to 9615. [2020-10-29 05:02:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9615 states. [2020-10-29 05:02:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9615 states to 9615 states and 14183 transitions. [2020-10-29 05:02:28,580 INFO L78 Accepts]: Start accepts. Automaton has 9615 states and 14183 transitions. Word has length 215 [2020-10-29 05:02:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:28,580 INFO L481 AbstractCegarLoop]: Abstraction has 9615 states and 14183 transitions. [2020-10-29 05:02:28,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:02:28,581 INFO L276 IsEmpty]: Start isEmpty. Operand 9615 states and 14183 transitions. [2020-10-29 05:02:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 05:02:28,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:28,618 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:28,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:02:28,618 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:28,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:28,619 INFO L82 PathProgramCache]: Analyzing trace with hash -909234966, now seen corresponding path program 1 times [2020-10-29 05:02:28,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:28,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250927275] [2020-10-29 05:02:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:28,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:28,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:33,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:33,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 05:02:33,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:02:33,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 05:02:33,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:33,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:02:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:02:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:33,970 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:33,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:33,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:33,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:33,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:02:33,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:33,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:34,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:34,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:34,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:02:34,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:02:34,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:34,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:34,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:02:34,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:34,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-29 05:02:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:34,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:34,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:34,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:02:34,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 05:02:34,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:34,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 05:02:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 05:02:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:34,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:34,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:02:34,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:34,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 05:02:34,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:34,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:02:34,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 05:02:34,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250927275] [2020-10-29 05:02:34,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:34,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:02:34,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670064346] [2020-10-29 05:02:34,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:02:34,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:34,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:02:34,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:02:34,548 INFO L87 Difference]: Start difference. First operand 9615 states and 14183 transitions. Second operand 8 states. [2020-10-29 05:02:34,845 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:35,408 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:38,847 INFO L93 Difference]: Finished difference Result 28780 states and 45266 transitions. [2020-10-29 05:02:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 05:02:38,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-10-29 05:02:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:38,962 INFO L225 Difference]: With dead ends: 28780 [2020-10-29 05:02:38,963 INFO L226 Difference]: Without dead ends: 19171 [2020-10-29 05:02:39,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 05:02:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19171 states. [2020-10-29 05:02:39,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19171 to 18989. [2020-10-29 05:02:39,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18989 states. [2020-10-29 05:02:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18989 states to 18989 states and 27533 transitions. [2020-10-29 05:02:39,877 INFO L78 Accepts]: Start accepts. Automaton has 18989 states and 27533 transitions. Word has length 218 [2020-10-29 05:02:39,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:39,878 INFO L481 AbstractCegarLoop]: Abstraction has 18989 states and 27533 transitions. [2020-10-29 05:02:39,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:02:39,878 INFO L276 IsEmpty]: Start isEmpty. Operand 18989 states and 27533 transitions. [2020-10-29 05:02:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-29 05:02:39,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:39,941 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:39,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 05:02:39,942 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:39,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:39,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1797080995, now seen corresponding path program 1 times [2020-10-29 05:02:39,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:39,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237589375] [2020-10-29 05:02:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:40,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:41,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:45,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 05:02:45,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:02:45,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 05:02:45,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:45,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:02:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 05:02:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 05:02:45,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:45,298 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:45,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:45,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:45,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:02:45,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:45,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:02:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:02:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:45,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:02:45,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:45,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 05:02:45,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:45,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:02:45,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:45,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:02:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:45,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 05:02:45,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:02:45,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 05:02:45,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:45,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 05:02:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:45,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 05:02:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:45,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:45,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:45,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:02:45,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:45,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 05:02:45,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:45,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:45,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:45,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:45,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:02:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-29 05:02:45,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237589375] [2020-10-29 05:02:45,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:45,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:02:45,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110308085] [2020-10-29 05:02:45,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:02:45,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:45,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:02:45,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:02:45,877 INFO L87 Difference]: Start difference. First operand 18989 states and 27533 transitions. Second operand 8 states. [2020-10-29 05:02:46,139 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:46,955 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:47,748 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:02:52,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:02:52,213 INFO L93 Difference]: Finished difference Result 66299 states and 101441 transitions. [2020-10-29 05:02:52,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 05:02:52,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2020-10-29 05:02:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:02:52,527 INFO L225 Difference]: With dead ends: 66299 [2020-10-29 05:02:52,527 INFO L226 Difference]: Without dead ends: 47316 [2020-10-29 05:02:52,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 05:02:52,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47316 states. [2020-10-29 05:02:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47316 to 47027. [2020-10-29 05:02:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47027 states. [2020-10-29 05:02:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47027 states to 47027 states and 65221 transitions. [2020-10-29 05:02:55,100 INFO L78 Accepts]: Start accepts. Automaton has 47027 states and 65221 transitions. Word has length 227 [2020-10-29 05:02:55,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:02:55,101 INFO L481 AbstractCegarLoop]: Abstraction has 47027 states and 65221 transitions. [2020-10-29 05:02:55,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:02:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 47027 states and 65221 transitions. [2020-10-29 05:02:55,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-29 05:02:55,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:02:55,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:02:55,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 05:02:55,203 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:02:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:02:55,204 INFO L82 PathProgramCache]: Analyzing trace with hash -2134454381, now seen corresponding path program 1 times [2020-10-29 05:02:55,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:02:55,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231769620] [2020-10-29 05:02:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:02:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:57,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:57,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 05:02:57,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:02:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2621 [2020-10-29 05:02:57,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:57,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 05:02:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:02:57,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-29 05:02:57,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:58,205 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:02:58,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:02:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:58,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:58,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:02:58,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 05:02:58,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:58,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:02:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:02:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:02:58,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:58,368 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 05:02:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:02:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:02:58,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 05:02:58,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:58,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:02:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 05:02:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:58,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 05:02:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:02:58,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:02:58,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:02:58,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:02:58,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:02:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:02:58,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:02:58,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:02:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 05:02:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:02:58,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 05:02:58,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:02:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 05:02:58,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231769620] [2020-10-29 05:02:58,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:02:58,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:02:58,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886435176] [2020-10-29 05:02:58,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:02:58,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:02:58,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:02:58,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:02:58,626 INFO L87 Difference]: Start difference. First operand 47027 states and 65221 transitions. Second operand 8 states. [2020-10-29 05:02:58,880 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:02:59,325 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:02:59,754 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:06,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:06,058 INFO L93 Difference]: Finished difference Result 136691 states and 200776 transitions. [2020-10-29 05:03:06,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 05:03:06,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-10-29 05:03:06,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:06,911 INFO L225 Difference]: With dead ends: 136691 [2020-10-29 05:03:06,912 INFO L226 Difference]: Without dead ends: 89670 [2020-10-29 05:03:07,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-29 05:03:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89670 states. [2020-10-29 05:03:10,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89670 to 86677. [2020-10-29 05:03:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86677 states. [2020-10-29 05:03:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86677 states to 86677 states and 119277 transitions. [2020-10-29 05:03:11,012 INFO L78 Accepts]: Start accepts. Automaton has 86677 states and 119277 transitions. Word has length 230 [2020-10-29 05:03:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:11,013 INFO L481 AbstractCegarLoop]: Abstraction has 86677 states and 119277 transitions. [2020-10-29 05:03:11,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:03:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 86677 states and 119277 transitions. [2020-10-29 05:03:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 05:03:11,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:11,114 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:11,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 05:03:11,114 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:11,115 INFO L82 PathProgramCache]: Analyzing trace with hash -496351619, now seen corresponding path program 1 times [2020-10-29 05:03:11,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:11,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979123935] [2020-10-29 05:03:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:11,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:13,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:13,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 05:03:13,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:03:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-10-29 05:03:13,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:13,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-29 05:03:13,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 05:03:13,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:13,326 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:13,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:13,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:13,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:13,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:13,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:03:13,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:13,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:13,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:13,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:13,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:13,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 05:03:13,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:13,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 05:03:13,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:13,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 05:03:13,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:03:13,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979123935] [2020-10-29 05:03:13,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:13,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:03:13,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053158644] [2020-10-29 05:03:13,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:03:13,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:13,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:03:13,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:03:13,697 INFO L87 Difference]: Start difference. First operand 86677 states and 119277 transitions. Second operand 5 states. [2020-10-29 05:03:14,034 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:03:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:17,372 INFO L93 Difference]: Finished difference Result 150006 states and 207522 transitions. [2020-10-29 05:03:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:03:17,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-29 05:03:17,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:18,155 INFO L225 Difference]: With dead ends: 150006 [2020-10-29 05:03:18,157 INFO L226 Difference]: Without dead ends: 63335 [2020-10-29 05:03:18,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:03:18,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63335 states. [2020-10-29 05:03:20,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63335 to 55235. [2020-10-29 05:03:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55235 states. [2020-10-29 05:03:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55235 states to 55235 states and 73741 transitions. [2020-10-29 05:03:20,244 INFO L78 Accepts]: Start accepts. Automaton has 55235 states and 73741 transitions. Word has length 236 [2020-10-29 05:03:20,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:20,244 INFO L481 AbstractCegarLoop]: Abstraction has 55235 states and 73741 transitions. [2020-10-29 05:03:20,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:03:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 55235 states and 73741 transitions. [2020-10-29 05:03:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 05:03:20,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:20,640 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:20,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 05:03:20,640 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:20,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:20,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1761415863, now seen corresponding path program 1 times [2020-10-29 05:03:20,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:20,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628379622] [2020-10-29 05:03:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:20,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:25,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:25,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-29 05:03:25,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:03:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 05:03:25,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:25,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 05:03:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 05:03:25,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:25,984 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:25,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:25,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:25,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:25,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:25,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:25,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:03:25,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:25,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:25,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:26,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:26,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:26,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:26,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:03:26,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:26,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:03:26,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:26,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:03:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:26,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:26,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:03:26,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:26,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 05:03:26,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:26,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:26,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:26,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:03:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:26,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 05:03:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:26,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:26,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:03:26,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 05:03:26,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:26,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 05:03:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:26,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 05:03:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:26,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:26,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:26,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:03:26,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:26,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 05:03:26,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:26,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:26,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:26,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 05:03:26,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:26,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 05:03:26,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628379622] [2020-10-29 05:03:26,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:26,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:03:26,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552501208] [2020-10-29 05:03:26,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:03:26,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:26,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:03:26,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:03:26,476 INFO L87 Difference]: Start difference. First operand 55235 states and 73741 transitions. Second operand 7 states. [2020-10-29 05:03:26,907 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:03:27,151 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:03:33,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:33,074 INFO L93 Difference]: Finished difference Result 126743 states and 180168 transitions. [2020-10-29 05:03:33,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:03:33,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-29 05:03:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:33,479 INFO L225 Difference]: With dead ends: 126743 [2020-10-29 05:03:33,479 INFO L226 Difference]: Without dead ends: 71514 [2020-10-29 05:03:33,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:03:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71514 states. [2020-10-29 05:03:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71514 to 67501. [2020-10-29 05:03:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67501 states. [2020-10-29 05:03:36,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67501 states to 67501 states and 86476 transitions. [2020-10-29 05:03:36,576 INFO L78 Accepts]: Start accepts. Automaton has 67501 states and 86476 transitions. Word has length 258 [2020-10-29 05:03:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:36,577 INFO L481 AbstractCegarLoop]: Abstraction has 67501 states and 86476 transitions. [2020-10-29 05:03:36,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:03:36,577 INFO L276 IsEmpty]: Start isEmpty. Operand 67501 states and 86476 transitions. [2020-10-29 05:03:36,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 05:03:36,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:36,643 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:36,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 05:03:36,643 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:36,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1776311565, now seen corresponding path program 1 times [2020-10-29 05:03:36,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:36,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007849224] [2020-10-29 05:03:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:36,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:36,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:37,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:38,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:41,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:41,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-29 05:03:41,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 05:03:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 05:03:41,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:41,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:03:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 05:03:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 05:03:41,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:42,270 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:03:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:03:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:42,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:42,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:42,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:03:42,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:03:42,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:42,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:42,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:03:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:42,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:42,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:42,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:03:42,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:42,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:03:42,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:42,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:42,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:42,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:42,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:42,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:03:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:42,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:42,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:03:42,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:42,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:03:42,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:42,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:03:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:03:42,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 05:03:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:42,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 05:03:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:42,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:42,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:42,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:42,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:03:42,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:03:42,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 05:03:42,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:42,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:42,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:42,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:03:42,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:42,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 05:03:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:42,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:42,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:03:42,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 05:03:42,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:42,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:42,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:03:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:03:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 05:03:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 05:03:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:42,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:42,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:03:42,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:03:42,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:03:42,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 05:03:42,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:03:42,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:03:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:03:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 05:03:42,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:03:42,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:03:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 206 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 05:03:43,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007849224] [2020-10-29 05:03:43,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:03:43,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 05:03:43,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714503481] [2020-10-29 05:03:43,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 05:03:43,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:03:43,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 05:03:43,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 05:03:43,051 INFO L87 Difference]: Start difference. First operand 67501 states and 86476 transitions. Second operand 10 states. [2020-10-29 05:03:43,539 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:03:44,213 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:03:44,834 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:03:45,651 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 05:03:54,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:03:54,397 INFO L93 Difference]: Finished difference Result 168682 states and 252418 transitions. [2020-10-29 05:03:54,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 05:03:54,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 296 [2020-10-29 05:03:54,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:03:55,134 INFO L225 Difference]: With dead ends: 168682 [2020-10-29 05:03:55,135 INFO L226 Difference]: Without dead ends: 103464 [2020-10-29 05:03:55,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-10-29 05:03:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103464 states. [2020-10-29 05:03:58,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103464 to 97839. [2020-10-29 05:03:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97839 states. [2020-10-29 05:03:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97839 states to 97839 states and 122123 transitions. [2020-10-29 05:03:58,890 INFO L78 Accepts]: Start accepts. Automaton has 97839 states and 122123 transitions. Word has length 296 [2020-10-29 05:03:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:03:58,890 INFO L481 AbstractCegarLoop]: Abstraction has 97839 states and 122123 transitions. [2020-10-29 05:03:58,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 05:03:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 97839 states and 122123 transitions. [2020-10-29 05:03:58,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-29 05:03:58,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:03:58,975 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:03:58,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 05:03:58,975 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:03:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:03:58,975 INFO L82 PathProgramCache]: Analyzing trace with hash 490257193, now seen corresponding path program 1 times [2020-10-29 05:03:58,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:03:58,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256271085] [2020-10-29 05:03:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:03:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:03:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:59,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:03:59,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:03,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:04,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:04,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-29 05:04:04,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 05:04:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-29 05:04:04,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:04,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:04:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-29 05:04:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 05:04:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:04,402 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:04:04,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:04,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:04,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:04,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:04,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:04:04,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:04,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:04,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:04,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:04,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:04,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:04,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:04,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:04:04,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:04,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:04:04,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:04,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:04,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:04,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:04,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:04,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:04:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:04,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:04:04,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:04,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:04:04,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:04,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:04,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 05:04:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:04,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:04,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:04,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:04:04,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:04:04,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:04,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:04:04,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 05:04:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:04,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:04,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:04:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:04:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:04:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-29 05:04:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:04,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:04,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:04,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:04:04,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:04,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 05:04:04,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:04,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:04,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:04:04,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:04:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 05:04:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:05,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-29 05:04:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:05,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:05,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:04:05,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:05,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:04:05,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:05,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:05,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 05:04:05,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:05,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 255 proven. 61 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 05:04:05,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256271085] [2020-10-29 05:04:05,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:05,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:04:05,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287278515] [2020-10-29 05:04:05,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:04:05,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:05,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:04:05,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:04:05,283 INFO L87 Difference]: Start difference. First operand 97839 states and 122123 transitions. Second operand 8 states. [2020-10-29 05:04:05,791 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 05:04:06,065 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:04:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:04:14,048 INFO L93 Difference]: Finished difference Result 197388 states and 261874 transitions. [2020-10-29 05:04:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 05:04:14,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 322 [2020-10-29 05:04:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:04:14,574 INFO L225 Difference]: With dead ends: 197388 [2020-10-29 05:04:14,574 INFO L226 Difference]: Without dead ends: 104571 [2020-10-29 05:04:14,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 05:04:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104571 states. [2020-10-29 05:04:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104571 to 102207. [2020-10-29 05:04:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102207 states. [2020-10-29 05:04:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102207 states to 102207 states and 124109 transitions. [2020-10-29 05:04:18,209 INFO L78 Accepts]: Start accepts. Automaton has 102207 states and 124109 transitions. Word has length 322 [2020-10-29 05:04:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:04:18,209 INFO L481 AbstractCegarLoop]: Abstraction has 102207 states and 124109 transitions. [2020-10-29 05:04:18,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:04:18,209 INFO L276 IsEmpty]: Start isEmpty. Operand 102207 states and 124109 transitions. [2020-10-29 05:04:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-29 05:04:18,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:18,320 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:04:18,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 05:04:18,320 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:18,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:18,320 INFO L82 PathProgramCache]: Analyzing trace with hash -893935947, now seen corresponding path program 1 times [2020-10-29 05:04:18,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:18,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796745797] [2020-10-29 05:04:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:18,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:20,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:23,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:23,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-29 05:04:23,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 05:04:23,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-29 05:04:23,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:23,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:04:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-29 05:04:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 05:04:23,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:04:23,824 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:04:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:04:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:23,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:23,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:23,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:04:23,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:23,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:04:23,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:23,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:04:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:23,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:23,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:23,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 05:04:23,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 05:04:23,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:23,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:23,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 05:04:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:23,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:23,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:04:23,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:23,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:04:23,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:23,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:23,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:23,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 05:04:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:24,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:24,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:24,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:04:24,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 05:04:24,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:24,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:04:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:04:24,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:04:24,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 05:04:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:24,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:24,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:24,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:24,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 05:04:24,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:04:24,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-29 05:04:24,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:24,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:04:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:04:24,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:04:24,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:24,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-29 05:04:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:24,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:24,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 05:04:24,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:24,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 05:04:24,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:24,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:04:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:04:24,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 05:04:24,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:24,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 05:04:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:24,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:24,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 05:04:24,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 05:04:24,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:24,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:04:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:04:24,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 05:04:24,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:24,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 05:04:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:04:24,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:04:24,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 05:04:24,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:04:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 05:04:24,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:04:24,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:04:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:04:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 05:04:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:04:24,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:04:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 368 proven. 72 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 05:04:25,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796745797] [2020-10-29 05:04:25,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:04:25,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:04:25,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463211617] [2020-10-29 05:04:25,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:04:25,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:04:25,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:04:25,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:04:25,186 INFO L87 Difference]: Start difference. First operand 102207 states and 124109 transitions. Second operand 8 states. [2020-10-29 05:04:25,684 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 05:04:26,376 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 05:04:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:04:34,074 INFO L93 Difference]: Finished difference Result 209500 states and 266873 transitions. [2020-10-29 05:04:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 05:04:34,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 356 [2020-10-29 05:04:34,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:04:34,533 INFO L225 Difference]: With dead ends: 209500 [2020-10-29 05:04:34,534 INFO L226 Difference]: Without dead ends: 117892 [2020-10-29 05:04:34,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 05:04:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117892 states. [2020-10-29 05:04:37,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117892 to 114525. [2020-10-29 05:04:37,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114525 states. [2020-10-29 05:04:37,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114525 states to 114525 states and 136224 transitions. [2020-10-29 05:04:37,914 INFO L78 Accepts]: Start accepts. Automaton has 114525 states and 136224 transitions. Word has length 356 [2020-10-29 05:04:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:04:37,915 INFO L481 AbstractCegarLoop]: Abstraction has 114525 states and 136224 transitions. [2020-10-29 05:04:37,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:04:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 114525 states and 136224 transitions. [2020-10-29 05:04:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-29 05:04:38,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:04:38,044 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:04:38,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 05:04:38,044 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:04:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:04:38,045 INFO L82 PathProgramCache]: Analyzing trace with hash -491621989, now seen corresponding path program 1 times [2020-10-29 05:04:38,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:04:38,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645493107] [2020-10-29 05:04:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:04:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:04:38,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking...