/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/Problem17_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:22:16,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:22:16,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:22:16,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:22:16,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:22:16,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:22:16,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:22:16,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:22:16,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:22:16,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:22:16,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:22:16,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:22:16,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:22:16,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:22:16,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:22:16,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:22:16,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:22:16,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:22:16,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:22:16,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:22:16,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:22:17,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:22:17,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:22:17,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:22:17,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:22:17,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:22:17,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:22:17,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:22:17,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:22:17,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:22:17,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:22:17,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:22:17,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:22:17,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:22:17,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:22:17,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:22:17,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:22:17,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:22:17,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:22:17,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:22:17,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:22:17,032 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 08:22:17,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:22:17,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:22:17,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:22:17,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:22:17,072 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:22:17,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:22:17,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:22:17,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:22:17,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:22:17,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:22:17,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:22:17,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:22:17,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:22:17,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:22:17,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:22:17,075 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:22:17,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:22:17,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:22:17,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:22:17,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:22:17,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:22:17,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:22:17,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:22:17,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:22:17,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:22:17,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:22:17,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:22:17,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:22:17,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:22:17,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:22:17,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:22:17,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:22:17,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:22:17,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:22:17,576 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:22:17,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45.c [2020-10-29 08:22:17,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef25f2810/d1eb02ab42584e9b983abda94067708c/FLAG8adfaf31a [2020-10-29 08:22:18,715 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:22:18,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label45.c [2020-10-29 08:22:18,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef25f2810/d1eb02ab42584e9b983abda94067708c/FLAG8adfaf31a [2020-10-29 08:22:18,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef25f2810/d1eb02ab42584e9b983abda94067708c [2020-10-29 08:22:18,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:22:18,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:22:18,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:22:18,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:22:18,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:22:18,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:22:18" (1/1) ... [2020-10-29 08:22:18,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305c2c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:18, skipping insertion in model container [2020-10-29 08:22:18,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:22:18" (1/1) ... [2020-10-29 08:22:18,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:22:18,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:22:20,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:22:20,147 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:22:20,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:22:20,640 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:22:20,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20 WrapperNode [2020-10-29 08:22:20,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:22:20,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:22:20,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:22:20,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:22:20,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (1/1) ... [2020-10-29 08:22:20,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:22:20,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:22:20,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:22:20,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:22:20,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (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 08:22:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:22:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:22:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:22:21,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:22:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:22:21,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:22:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:22:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:22:21,067 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:22:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:22:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:22:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:22:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:22:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:22:21,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:22:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:22:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:22:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:22:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:22:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:22:21,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:22:30,170 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:22:30,170 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:22:30,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:22:30 BoogieIcfgContainer [2020-10-29 08:22:30,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:22:30,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:22:30,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:22:30,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:22:30,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:22:18" (1/3) ... [2020-10-29 08:22:30,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0a5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:22:30, skipping insertion in model container [2020-10-29 08:22:30,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:20" (2/3) ... [2020-10-29 08:22:30,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0a5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:22:30, skipping insertion in model container [2020-10-29 08:22:30,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:22:30" (3/3) ... [2020-10-29 08:22:30,183 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label45.c [2020-10-29 08:22:30,196 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:22:30,204 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:22:30,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:22:30,304 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:22:30,304 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:22:30,305 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:22:30,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:22:30,305 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:22:30,305 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:22:30,305 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:22:30,305 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:22:30,358 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:22:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 08:22:30,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:30,373 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] [2020-10-29 08:22:30,374 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:30,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:30,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1049082253, now seen corresponding path program 1 times [2020-10-29 08:22:30,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:30,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922826073] [2020-10-29 08:22:30,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:30,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:31,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:31,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 08:22:31,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-29 08:22:31,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:31,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:22:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:31,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 08:22:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:22:31,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:31,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:31,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:31,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:31,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:22:31,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:31,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:31,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:31,819 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 08:22:31,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922826073] [2020-10-29 08:22:31,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:22:31,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:22:31,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003183936] [2020-10-29 08:22:31,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:22:31,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:31,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:22:31,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:22:31,855 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 5 states. [2020-10-29 08:22:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:48,953 INFO L93 Difference]: Finished difference Result 2207 states and 4069 transitions. [2020-10-29 08:22:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:22:48,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-29 08:22:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:48,989 INFO L225 Difference]: With dead ends: 2207 [2020-10-29 08:22:48,989 INFO L226 Difference]: Without dead ends: 1502 [2020-10-29 08:22:49,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:22:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-10-29 08:22:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1467. [2020-10-29 08:22:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-10-29 08:22:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2358 transitions. [2020-10-29 08:22:49,165 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2358 transitions. Word has length 57 [2020-10-29 08:22:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:49,166 INFO L481 AbstractCegarLoop]: Abstraction has 1467 states and 2358 transitions. [2020-10-29 08:22:49,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:22:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2358 transitions. [2020-10-29 08:22:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 08:22:49,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:49,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:49,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:22:49,174 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:49,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:49,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1255911102, now seen corresponding path program 1 times [2020-10-29 08:22:49,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:49,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447136795] [2020-10-29 08:22:49,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:50,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:50,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:22:50,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:22:50,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-10-29 08:22:50,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:50,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:50,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:22:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:50,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:22:50,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:50,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:50,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:50,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:50,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:22:50,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:50,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:22:50,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:51,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:51,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:51,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 08:22:51,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 08:22:51,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:51,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:51,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:51,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:51,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 08:22:51,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:22:51,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447136795] [2020-10-29 08:22:51,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:22:51,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:22:51,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027773907] [2020-10-29 08:22:51,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:22:51,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:51,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:22:51,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:22:51,337 INFO L87 Difference]: Start difference. First operand 1467 states and 2358 transitions. Second operand 7 states. [2020-10-29 08:23:06,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:06,967 INFO L93 Difference]: Finished difference Result 3910 states and 6444 transitions. [2020-10-29 08:23:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:23:06,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-29 08:23:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:06,995 INFO L225 Difference]: With dead ends: 3910 [2020-10-29 08:23:06,995 INFO L226 Difference]: Without dead ends: 2449 [2020-10-29 08:23:07,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:23:07,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2020-10-29 08:23:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 2386. [2020-10-29 08:23:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2386 states. [2020-10-29 08:23:07,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 3386 transitions. [2020-10-29 08:23:07,119 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 3386 transitions. Word has length 139 [2020-10-29 08:23:07,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:07,123 INFO L481 AbstractCegarLoop]: Abstraction has 2386 states and 3386 transitions. [2020-10-29 08:23:07,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:23:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 3386 transitions. [2020-10-29 08:23:07,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 08:23:07,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:07,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:07,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:23:07,145 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:07,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:07,146 INFO L82 PathProgramCache]: Analyzing trace with hash 634796238, now seen corresponding path program 1 times [2020-10-29 08:23:07,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:07,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110957323] [2020-10-29 08:23:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:07,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:07,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:08,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:08,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 08:23:08,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:23:08,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-10-29 08:23:08,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:08,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:23:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:23:08,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:23:08,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:09,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:09,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:09,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:09,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:09,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:09,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:23:09,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:09,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:23:09,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:09,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:09,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:09,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:23:09,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:09,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 08:23:09,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:09,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:09,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:09,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:09,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:23:09,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:23:09,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110957323] [2020-10-29 08:23:09,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:23:09,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:23:09,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022516410] [2020-10-29 08:23:09,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:23:09,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:09,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:23:09,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:23:09,647 INFO L87 Difference]: Start difference. First operand 2386 states and 3386 transitions. Second operand 7 states. [2020-10-29 08:23:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:26,322 INFO L93 Difference]: Finished difference Result 6669 states and 9731 transitions. [2020-10-29 08:23:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:23:26,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-29 08:23:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:26,348 INFO L225 Difference]: With dead ends: 6669 [2020-10-29 08:23:26,349 INFO L226 Difference]: Without dead ends: 4289 [2020-10-29 08:23:26,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:23:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4289 states. [2020-10-29 08:23:26,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4289 to 3329. [2020-10-29 08:23:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3329 states. [2020-10-29 08:23:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 4350 transitions. [2020-10-29 08:23:26,470 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 4350 transitions. Word has length 147 [2020-10-29 08:23:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:26,471 INFO L481 AbstractCegarLoop]: Abstraction has 3329 states and 4350 transitions. [2020-10-29 08:23:26,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:23:26,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 4350 transitions. [2020-10-29 08:23:26,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 08:23:26,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:26,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 08:23:26,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:23:26,476 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:26,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:26,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1593068047, now seen corresponding path program 1 times [2020-10-29 08:23:26,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:26,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145497190] [2020-10-29 08:23:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:26,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:28,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:28,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-29 08:23:28,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:23:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1679 [2020-10-29 08:23:28,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:28,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:23:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:23:28,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 08:23:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:28,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:28,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:28,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:28,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:28,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:23:28,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:28,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:23:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:23:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:28,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:28,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:28,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:28,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 08:23:28,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:28,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:23:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:28,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:28,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:28,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:28,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:23:28,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 08:23:28,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:28,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:28,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:23:28,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 113 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:23:28,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145497190] [2020-10-29 08:23:28,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:28,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:23:28,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281989877] [2020-10-29 08:23:28,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:23:28,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:28,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:23:28,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:23:28,917 INFO L87 Difference]: Start difference. First operand 3329 states and 4350 transitions. Second operand 6 states. [2020-10-29 08:23:44,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:44,510 INFO L93 Difference]: Finished difference Result 8556 states and 11495 transitions. [2020-10-29 08:23:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:23:44,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-29 08:23:44,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:44,542 INFO L225 Difference]: With dead ends: 8556 [2020-10-29 08:23:44,542 INFO L226 Difference]: Without dead ends: 4325 [2020-10-29 08:23:44,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:23:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2020-10-29 08:23:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4285. [2020-10-29 08:23:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4285 states. [2020-10-29 08:23:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 5391 transitions. [2020-10-29 08:23:44,681 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 5391 transitions. Word has length 213 [2020-10-29 08:23:44,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:44,683 INFO L481 AbstractCegarLoop]: Abstraction has 4285 states and 5391 transitions. [2020-10-29 08:23:44,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:23:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 5391 transitions. [2020-10-29 08:23:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 08:23:44,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:44,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 08:23:44,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:23:44,689 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:44,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:44,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1268287042, now seen corresponding path program 1 times [2020-10-29 08:23:44,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:44,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491845537] [2020-10-29 08:23:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:45,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:46,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:46,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 08:23:46,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:23:46,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-29 08:23:46,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:46,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:23:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:23:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:46,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:46,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:46,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:46,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:46,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:23:46,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:46,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:23:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:23:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:46,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:46,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:46,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:46,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:23:46,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:46,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:23:46,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:46,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:23:46,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 08:23:46,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:46,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:23:46,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:23:46,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491845537] [2020-10-29 08:23:46,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:46,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:23:46,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760293965] [2020-10-29 08:23:46,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:23:46,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:46,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:23:46,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:23:46,773 INFO L87 Difference]: Start difference. First operand 4285 states and 5391 transitions. Second operand 7 states. [2020-10-29 08:24:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:02,546 INFO L93 Difference]: Finished difference Result 11350 states and 14966 transitions. [2020-10-29 08:24:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:24:02,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-29 08:24:02,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:02,588 INFO L225 Difference]: With dead ends: 11350 [2020-10-29 08:24:02,588 INFO L226 Difference]: Without dead ends: 7071 [2020-10-29 08:24:02,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:24:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2020-10-29 08:24:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7044. [2020-10-29 08:24:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7044 states. [2020-10-29 08:24:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7044 states to 7044 states and 8934 transitions. [2020-10-29 08:24:02,795 INFO L78 Accepts]: Start accepts. Automaton has 7044 states and 8934 transitions. Word has length 214 [2020-10-29 08:24:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:02,795 INFO L481 AbstractCegarLoop]: Abstraction has 7044 states and 8934 transitions. [2020-10-29 08:24:02,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:24:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 7044 states and 8934 transitions. [2020-10-29 08:24:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-29 08:24:02,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:02,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 08:24:02,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:24:02,801 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:02,801 INFO L82 PathProgramCache]: Analyzing trace with hash -234982725, now seen corresponding path program 1 times [2020-10-29 08:24:02,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:02,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604612518] [2020-10-29 08:24:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:07,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:07,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 08:24:07,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:24:07,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 08:24:07,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:07,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:24:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:24:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:24:07,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:08,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:08,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:08,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:08,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:08,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:08,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:24:08,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:08,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:24:08,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:08,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:08,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:08,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:08,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:08,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 08:24:08,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:08,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:08,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:24:08,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:08,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:24:08,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:08,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:08,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:08,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:24:08,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:08,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-29 08:24:08,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:08,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:08,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:24:08,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 167 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:24:08,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604612518] [2020-10-29 08:24:08,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:08,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:24:08,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403241103] [2020-10-29 08:24:08,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:24:08,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:08,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:24:08,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:24:08,933 INFO L87 Difference]: Start difference. First operand 7044 states and 8934 transitions. Second operand 10 states. [2020-10-29 08:24:09,211 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:24:38,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:38,269 INFO L93 Difference]: Finished difference Result 20353 states and 28768 transitions. [2020-10-29 08:24:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 08:24:38,273 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 219 [2020-10-29 08:24:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:38,362 INFO L225 Difference]: With dead ends: 20353 [2020-10-29 08:24:38,363 INFO L226 Difference]: Without dead ends: 12850 [2020-10-29 08:24:38,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-29 08:24:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12850 states. [2020-10-29 08:24:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12850 to 12542. [2020-10-29 08:24:38,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12542 states. [2020-10-29 08:24:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12542 states to 12542 states and 15273 transitions. [2020-10-29 08:24:38,814 INFO L78 Accepts]: Start accepts. Automaton has 12542 states and 15273 transitions. Word has length 219 [2020-10-29 08:24:38,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:38,815 INFO L481 AbstractCegarLoop]: Abstraction has 12542 states and 15273 transitions. [2020-10-29 08:24:38,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:24:38,815 INFO L276 IsEmpty]: Start isEmpty. Operand 12542 states and 15273 transitions. [2020-10-29 08:24:38,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-29 08:24:38,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:38,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:38,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:24:38,820 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:38,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:38,820 INFO L82 PathProgramCache]: Analyzing trace with hash 507755781, now seen corresponding path program 1 times [2020-10-29 08:24:38,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:38,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614846726] [2020-10-29 08:24:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:39,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:43,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:43,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:24:43,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:24:43,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 08:24:43,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:43,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:43,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:24:43,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:24:43,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 08:24:43,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:44,149 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:24:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:44,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:44,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:44,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:44,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:24:44,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:44,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:24:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:24:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:44,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:44,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:44,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:44,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:44,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 08:24:44,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:44,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:44,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:24:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:44,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:44,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:44,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:44,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:24:44,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:24:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 08:24:44,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:44,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:24:44,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:24:44,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614846726] [2020-10-29 08:24:44,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:44,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:24:44,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054930444] [2020-10-29 08:24:44,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:24:44,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:44,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:24:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:24:44,801 INFO L87 Difference]: Start difference. First operand 12542 states and 15273 transitions. Second operand 6 states. [2020-10-29 08:24:45,774 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:25:00,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:00,008 INFO L93 Difference]: Finished difference Result 25087 states and 31038 transitions. [2020-10-29 08:25:00,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:25:00,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2020-10-29 08:25:00,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:00,055 INFO L225 Difference]: With dead ends: 25087 [2020-10-29 08:25:00,055 INFO L226 Difference]: Without dead ends: 12986 [2020-10-29 08:25:00,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:25:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12986 states. [2020-10-29 08:25:00,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12986 to 12977. [2020-10-29 08:25:00,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12977 states. [2020-10-29 08:25:00,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12977 states to 12977 states and 16163 transitions. [2020-10-29 08:25:00,420 INFO L78 Accepts]: Start accepts. Automaton has 12977 states and 16163 transitions. Word has length 230 [2020-10-29 08:25:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:00,420 INFO L481 AbstractCegarLoop]: Abstraction has 12977 states and 16163 transitions. [2020-10-29 08:25:00,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:25:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 12977 states and 16163 transitions. [2020-10-29 08:25:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 08:25:00,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:00,428 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:25:00,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:25:00,428 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:00,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1871200399, now seen corresponding path program 1 times [2020-10-29 08:25:00,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:00,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118148945] [2020-10-29 08:25:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:00,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:00,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:01,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:01,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:05,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:05,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-29 08:25:05,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:25:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 08:25:05,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:05,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 08:25:05,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 08:25:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:05,701 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:25:05,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:05,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:05,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:05,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:05,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:25:05,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:05,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:05,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:05,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:05,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:05,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:25:05,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 08:25:05,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:05,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:05,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:05,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:25:05,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:05,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 08:25:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:06,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:06,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:06,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 08:25:06,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:06,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:25:06,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:06,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-29 08:25:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:06,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:06,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:25:06,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:06,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:25:06,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:06,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:25:06,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:06,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 222 proven. 74 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-29 08:25:06,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118148945] [2020-10-29 08:25:06,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:06,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:25:06,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148780346] [2020-10-29 08:25:06,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:25:06,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:06,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:25:06,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:25:06,419 INFO L87 Difference]: Start difference. First operand 12977 states and 16163 transitions. Second operand 7 states. [2020-10-29 08:25:07,347 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:25:30,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:30,586 INFO L93 Difference]: Finished difference Result 30042 states and 38446 transitions. [2020-10-29 08:25:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:25:30,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-29 08:25:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:30,648 INFO L225 Difference]: With dead ends: 30042 [2020-10-29 08:25:30,648 INFO L226 Difference]: Without dead ends: 16127 [2020-10-29 08:25:30,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:25:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16127 states. [2020-10-29 08:25:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16127 to 16058. [2020-10-29 08:25:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16058 states. [2020-10-29 08:25:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16058 states to 16058 states and 19706 transitions. [2020-10-29 08:25:31,108 INFO L78 Accepts]: Start accepts. Automaton has 16058 states and 19706 transitions. Word has length 293 [2020-10-29 08:25:31,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:31,109 INFO L481 AbstractCegarLoop]: Abstraction has 16058 states and 19706 transitions. [2020-10-29 08:25:31,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:25:31,109 INFO L276 IsEmpty]: Start isEmpty. Operand 16058 states and 19706 transitions. [2020-10-29 08:25:31,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-29 08:25:31,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:31,117 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:25:31,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:25:31,118 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash -107219768, now seen corresponding path program 1 times [2020-10-29 08:25:31,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:31,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194533585] [2020-10-29 08:25:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:31,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:31,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:36,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:36,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-29 08:25:36,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:25:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 08:25:36,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:36,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:25:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:25:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:25:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:36,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:36,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:36,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:36,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:36,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:25:36,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:36,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:36,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:25:36,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:36,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:36,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:36,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:36,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:36,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-29 08:25:36,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:36,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:25:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:25:36,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:36,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:36,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:36,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:25:36,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:36,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 08:25:36,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:36,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:25:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:36,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:25:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:36,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:37,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:37,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:25:37,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:37,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 08:25:37,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:37,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:25:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 217 proven. 91 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:25:37,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194533585] [2020-10-29 08:25:37,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:37,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:25:37,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008378311] [2020-10-29 08:25:37,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:25:37,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:37,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:25:37,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:25:37,194 INFO L87 Difference]: Start difference. First operand 16058 states and 19706 transitions. Second operand 10 states. [2020-10-29 08:25:37,459 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:25:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:58,553 INFO L93 Difference]: Finished difference Result 37768 states and 50507 transitions. [2020-10-29 08:25:58,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 08:25:58,555 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 305 [2020-10-29 08:25:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:58,630 INFO L225 Difference]: With dead ends: 37768 [2020-10-29 08:25:58,630 INFO L226 Difference]: Without dead ends: 21705 [2020-10-29 08:25:58,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-29 08:25:58,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21705 states. [2020-10-29 08:25:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21705 to 20888. [2020-10-29 08:25:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20888 states. [2020-10-29 08:25:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20888 states to 20888 states and 25156 transitions. [2020-10-29 08:25:59,307 INFO L78 Accepts]: Start accepts. Automaton has 20888 states and 25156 transitions. Word has length 305 [2020-10-29 08:25:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:59,308 INFO L481 AbstractCegarLoop]: Abstraction has 20888 states and 25156 transitions. [2020-10-29 08:25:59,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:25:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 20888 states and 25156 transitions. [2020-10-29 08:25:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 08:25:59,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:59,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:25:59,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:25:59,317 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:59,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:59,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1066248505, now seen corresponding path program 1 times [2020-10-29 08:25:59,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:59,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835436729] [2020-10-29 08:25:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:59,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:59,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:26:00,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking...