/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/loops/eureka_05.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:14:51,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:14:51,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:14:51,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:14:51,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:14:51,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:14:51,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:14:51,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:14:51,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:14:51,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:14:51,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:14:51,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:14:51,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:14:51,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:14:51,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:14:51,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:14:51,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:14:51,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:14:51,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:14:51,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:14:51,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:14:51,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:14:51,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:14:51,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:14:52,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:14:52,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:14:52,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:14:52,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:14:52,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:14:52,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:14:52,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:14:52,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:14:52,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:14:52,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:14:52,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:14:52,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:14:52,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:14:52,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:14:52,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:14:52,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:14:52,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:14:52,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 15:14:52,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:14:52,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:14:52,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:14:52,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:14:52,078 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:14:52,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:14:52,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:14:52,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:14:52,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:14:52,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:14:52,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:14:52,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:14:52,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:14:52,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:14:52,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:14:52,081 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:14:52,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:14:52,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:14:52,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:14:52,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:14:52,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:14:52,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:14:52,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:14:52,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:14:52,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:14:52,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:14:52,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:14:52,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:14:52,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:14:52,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:14:52,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:14:52,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:14:52,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:14:52,547 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:14:52,548 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:14:52,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05.i [2020-10-28 15:14:52,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffc9f9ac2/da2533e744ef4dd199c6416346a951fc/FLAG89e046c9c [2020-10-28 15:14:53,333 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:14:53,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/eureka_05.i [2020-10-28 15:14:53,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffc9f9ac2/da2533e744ef4dd199c6416346a951fc/FLAG89e046c9c [2020-10-28 15:14:53,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffc9f9ac2/da2533e744ef4dd199c6416346a951fc [2020-10-28 15:14:53,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:14:53,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:14:53,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:14:53,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:14:53,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:14:53,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:14:53" (1/1) ... [2020-10-28 15:14:53,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2305d4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:53, skipping insertion in model container [2020-10-28 15:14:53,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:14:53" (1/1) ... [2020-10-28 15:14:53,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:14:53,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:14:54,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:14:54,043 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:14:54,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:14:54,109 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:14:54,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:54 WrapperNode [2020-10-28 15:14:54,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:14:54,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:14:54,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:14:54,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:14:54,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:54" (1/1) ... [2020-10-28 15:14:54,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:54" (1/1) ... [2020-10-28 15:14:54,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:54" (1/1) ... [2020-10-28 15:14:54,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:54" (1/1) ... [2020-10-28 15:14:54,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:54" (1/1) ... [2020-10-28 15:14:54,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:54" (1/1) ... [2020-10-28 15:14:54,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:54" (1/1) ... [2020-10-28 15:14:54,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:14:54,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:14:54,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:14:54,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:14:54,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:14:54,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:14:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:14:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:14:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:14:54,244 INFO L138 BoogieDeclarations]: Found implementation of procedure SelectionSort [2020-10-28 15:14:54,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:14:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:14:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:14:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 15:14:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 15:14:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:14:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:14:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:14:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure SelectionSort [2020-10-28 15:14:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:14:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:14:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:14:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:14:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:14:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:14:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:14:54,732 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:14:54,732 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-28 15:14:54,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:14:54 BoogieIcfgContainer [2020-10-28 15:14:54,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:14:54,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:14:54,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:14:54,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:14:54,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:14:53" (1/3) ... [2020-10-28 15:14:54,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ffa304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:14:54, skipping insertion in model container [2020-10-28 15:14:54,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:14:54" (2/3) ... [2020-10-28 15:14:54,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ffa304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:14:54, skipping insertion in model container [2020-10-28 15:14:54,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:14:54" (3/3) ... [2020-10-28 15:14:54,751 INFO L111 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2020-10-28 15:14:54,766 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:14:54,771 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:14:54,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:14:54,828 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:14:54,828 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:14:54,829 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:14:54,829 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:14:54,829 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:14:54,829 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:14:54,829 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:14:54,830 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:14:54,854 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-28 15:14:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 15:14:54,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:54,863 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] [2020-10-28 15:14:54,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:54,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:54,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1174407567, now seen corresponding path program 1 times [2020-10-28 15:14:54,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:54,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065428321] [2020-10-28 15:14:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:55,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:55,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:55,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 15:14:55,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:14:55,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-28 15:14:55,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:55,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:55,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:14:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:55,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:14:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:55,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:55,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:55,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:55,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:55,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 15:14:55,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:55,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:55,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:14:55,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 15:14:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:55,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:55,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:55,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:14:55,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:55,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 15:14:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:55,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:14:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:14:55,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065428321] [2020-10-28 15:14:55,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:14:55,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 15:14:55,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471041924] [2020-10-28 15:14:55,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 15:14:55,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:55,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 15:14:55,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 15:14:55,656 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-10-28 15:14:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:55,997 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2020-10-28 15:14:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:14:56,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 15:14:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:56,010 INFO L225 Difference]: With dead ends: 84 [2020-10-28 15:14:56,011 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 15:14:56,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:14:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 15:14:56,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2020-10-28 15:14:56,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 15:14:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 15:14:56,066 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-10-28 15:14:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:56,066 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 15:14:56,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 15:14:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 15:14:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 15:14:56,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:56,068 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] [2020-10-28 15:14:56,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:14:56,069 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:56,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1858944183, now seen corresponding path program 1 times [2020-10-28 15:14:56,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:56,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684687076] [2020-10-28 15:14:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:56,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:56,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:56,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 15:14:56,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:14:56,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 15:14:56,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:56,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:14:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:14:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:14:56,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:14:56,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:56,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:56,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:56,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:56,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 15:14:56,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:56,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:56,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:56,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:56,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 15:14:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:56,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:56,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:14:56,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:56,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:14:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:14:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:14:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:14:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:14:56,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684687076] [2020-10-28 15:14:56,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:14:56,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:14:56,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647000055] [2020-10-28 15:14:56,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:14:56,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:56,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:14:56,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:14:56,417 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-28 15:14:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:57,149 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-28 15:14:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:14:57,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-28 15:14:57,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:57,152 INFO L225 Difference]: With dead ends: 54 [2020-10-28 15:14:57,152 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 15:14:57,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:14:57,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 15:14:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-10-28 15:14:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 15:14:57,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 15:14:57,182 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2020-10-28 15:14:57,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:57,183 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 15:14:57,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:14:57,183 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 15:14:57,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 15:14:57,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:57,185 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] [2020-10-28 15:14:57,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:14:57,185 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:57,186 INFO L82 PathProgramCache]: Analyzing trace with hash -330905265, now seen corresponding path program 1 times [2020-10-28 15:14:57,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:57,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636241693] [2020-10-28 15:14:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:57,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:57,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:57,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 15:14:57,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:14:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-28 15:14:57,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:57,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:14:57,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:57,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:57,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:57,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:57,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:57,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:57,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:57,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:14:57,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:57,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:57,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:57,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-28 15:14:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:57,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:57,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 15:14:57,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:57,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:14:57,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:57,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 15:14:57,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 15:14:57,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636241693] [2020-10-28 15:14:57,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:14:57,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:14:57,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509904084] [2020-10-28 15:14:57,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:14:57,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:57,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:14:57,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:14:57,902 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-28 15:14:58,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:58,107 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-28 15:14:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:14:58,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-28 15:14:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:58,109 INFO L225 Difference]: With dead ends: 62 [2020-10-28 15:14:58,109 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 15:14:58,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:14:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 15:14:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-28 15:14:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-28 15:14:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-28 15:14:58,119 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-28 15:14:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:58,119 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-28 15:14:58,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:14:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-28 15:14:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 15:14:58,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:58,120 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] [2020-10-28 15:14:58,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:14:58,121 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:58,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:58,122 INFO L82 PathProgramCache]: Analyzing trace with hash 398615793, now seen corresponding path program 1 times [2020-10-28 15:14:58,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:58,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966064733] [2020-10-28 15:14:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:58,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:58,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:58,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:59,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:59,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:14:59,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:14:59,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1363 [2020-10-28 15:14:59,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:59,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:14:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:14:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 15:14:59,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:59,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:59,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:59,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:59,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 15:14:59,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:59,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:59,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:59,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:14:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:59,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:59,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:59,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 15:14:59,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:14:59,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 15:14:59,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:59,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:14:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:14:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:14:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 15:14:59,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966064733] [2020-10-28 15:14:59,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:59,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 15:14:59,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527916106] [2020-10-28 15:14:59,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:14:59,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:59,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:14:59,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:14:59,672 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-28 15:15:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:15:00,189 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-10-28 15:15:00,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:15:00,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-28 15:15:00,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:15:00,193 INFO L225 Difference]: With dead ends: 59 [2020-10-28 15:15:00,193 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 15:15:00,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:15:00,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 15:15:00,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-28 15:15:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 15:15:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-28 15:15:00,213 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 26 [2020-10-28 15:15:00,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:15:00,214 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-28 15:15:00,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:15:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-28 15:15:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 15:15:00,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:15:00,216 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:15:00,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:15:00,217 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:15:00,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:15:00,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1234781321, now seen corresponding path program 2 times [2020-10-28 15:15:00,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:15:00,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507506831] [2020-10-28 15:15:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:15:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:00,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:00,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:00,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:00,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:04,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:04,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 15:15:04,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:15:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4161 [2020-10-28 15:15:04,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:04,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:15:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:15:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 15:15:04,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:15:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:04,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:04,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:04,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:15:04,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:15:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:15:04,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:04,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:15:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:15:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:15:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:15:04,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:15:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:04,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:04,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:04,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:04,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 15:15:04,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:15:04,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-28 15:15:04,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:04,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:15:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:15:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:15:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:15:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 15:15:04,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507506831] [2020-10-28 15:15:04,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:15:04,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 15:15:04,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954054993] [2020-10-28 15:15:04,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:15:04,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:15:04,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:15:04,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:15:04,963 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 9 states. [2020-10-28 15:15:05,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:15:05,626 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2020-10-28 15:15:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:15:05,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-28 15:15:05,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:15:05,630 INFO L225 Difference]: With dead ends: 74 [2020-10-28 15:15:05,630 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 15:15:05,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:15:05,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 15:15:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2020-10-28 15:15:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 15:15:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-28 15:15:05,647 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-10-28 15:15:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:15:05,647 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-28 15:15:05,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:15:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-28 15:15:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 15:15:05,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:15:05,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:15:05,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:15:05,651 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:15:05,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:15:05,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1034205607, now seen corresponding path program 1 times [2020-10-28 15:15:05,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:15:05,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019322037] [2020-10-28 15:15:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:15:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:05,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:05,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:06,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:10,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:10,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 15:15:10,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 15:15:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 15:15:10,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:10,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:15:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 15:15:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:15:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:10,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:15:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:10,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:10,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:10,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:15:10,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:15:10,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:15:10,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:10,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:15:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:15:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:15:10,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:10,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:15:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:10,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:10,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 15:15:10,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:15:10,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 15:15:10,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:10,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:15:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 15:15:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:15:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 15:15:11,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019322037] [2020-10-28 15:15:11,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:15:11,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:15:11,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846838918] [2020-10-28 15:15:11,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:15:11,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:15:11,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:15:11,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:15:11,028 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 9 states. [2020-10-28 15:15:11,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:15:11,861 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2020-10-28 15:15:11,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:15:11,862 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-28 15:15:11,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:15:11,863 INFO L225 Difference]: With dead ends: 85 [2020-10-28 15:15:11,863 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 15:15:11,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-28 15:15:11,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 15:15:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-10-28 15:15:11,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 15:15:11,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-10-28 15:15:11,877 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 36 [2020-10-28 15:15:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:15:11,877 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-10-28 15:15:11,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:15:11,877 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-10-28 15:15:11,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 15:15:11,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:15:11,879 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:15:11,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 15:15:11,879 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:15:11,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:15:11,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1755550745, now seen corresponding path program 2 times [2020-10-28 15:15:11,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:15:11,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721296517] [2020-10-28 15:15:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:15:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:11,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:11,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:11,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:11,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:12,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:16,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:16,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 15:15:16,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 15:15:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 15:15:16,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:16,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:15:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 15:15:16,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:15:16,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:15:16,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:15:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:16,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:16,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:15:16,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:15:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:15:16,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:16,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:15:16,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:15:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:15:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:16,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:15:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:16,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:17,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:17,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 15:15:17,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:15:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 15:15:17,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:17,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:15:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 15:15:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 15:15:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:15:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 15:15:17,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721296517] [2020-10-28 15:15:17,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:15:17,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:15:17,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796802105] [2020-10-28 15:15:17,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:15:17,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:15:17,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:15:17,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:15:17,176 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 9 states. [2020-10-28 15:15:17,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:15:17,805 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-10-28 15:15:17,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 15:15:17,806 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-28 15:15:17,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:15:17,809 INFO L225 Difference]: With dead ends: 70 [2020-10-28 15:15:17,809 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 15:15:17,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:15:17,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 15:15:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-28 15:15:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 15:15:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-28 15:15:17,826 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 39 [2020-10-28 15:15:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:15:17,827 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-28 15:15:17,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:15:17,827 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-28 15:15:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 15:15:17,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:15:17,829 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:15:17,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 15:15:17,829 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:15:17,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:15:17,830 INFO L82 PathProgramCache]: Analyzing trace with hash -629235791, now seen corresponding path program 3 times [2020-10-28 15:15:17,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:15:17,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336633165] [2020-10-28 15:15:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:15:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:17,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:17,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:17,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:17,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:17,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:22,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:22,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 15:15:22,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:15:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 15:15:22,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:22,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:15:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:15:22,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:15:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:22,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:15:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:22,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:22,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:22,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:15:22,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:15:22,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:15:22,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:22,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:15:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:15:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:15:22,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:22,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:15:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:22,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:22,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 15:15:22,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:15:22,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 15:15:22,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:22,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:22,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:15:22,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 15:15:22,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:15:22,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-28 15:15:22,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336633165] [2020-10-28 15:15:22,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:15:22,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 15:15:22,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306529520] [2020-10-28 15:15:22,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:15:22,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:15:22,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:15:22,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:15:22,944 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 6 states. [2020-10-28 15:15:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:15:23,157 INFO L93 Difference]: Finished difference Result 104 states and 124 transitions. [2020-10-28 15:15:23,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:15:23,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-28 15:15:23,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:15:23,162 INFO L225 Difference]: With dead ends: 104 [2020-10-28 15:15:23,162 INFO L226 Difference]: Without dead ends: 58 [2020-10-28 15:15:23,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:15:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-28 15:15:23,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-28 15:15:23,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 15:15:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-28 15:15:23,174 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 43 [2020-10-28 15:15:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:15:23,174 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-28 15:15:23,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:15:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-28 15:15:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 15:15:23,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:15:23,175 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:15:23,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 15:15:23,176 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:15:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:15:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1616432335, now seen corresponding path program 4 times [2020-10-28 15:15:23,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:15:23,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253883634] [2020-10-28 15:15:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:15:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:23,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:23,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:23,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:24,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:28,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:28,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 15:15:28,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 15:15:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 15:15:28,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:28,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:28,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:15:28,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:15:28,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 15:15:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:15:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:28,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:28,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:15:28,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:15:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:15:28,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:28,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:15:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:15:28,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:15:28,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:28,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 15:15:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:28,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:28,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:28,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:30,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:30,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 15:15:30,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:15:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2129 [2020-10-28 15:15:30,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:30,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:15:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:15:30,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 15:15:30,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 15:15:30,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253883634] [2020-10-28 15:15:30,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:15:30,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:15:30,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392443055] [2020-10-28 15:15:30,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:15:30,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:15:30,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:15:30,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:15:30,490 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 10 states. [2020-10-28 15:15:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:15:31,251 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2020-10-28 15:15:31,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:15:31,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-28 15:15:31,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:15:31,256 INFO L225 Difference]: With dead ends: 91 [2020-10-28 15:15:31,256 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 15:15:31,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-10-28 15:15:31,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 15:15:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2020-10-28 15:15:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-28 15:15:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-28 15:15:31,285 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 45 [2020-10-28 15:15:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:15:31,285 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-28 15:15:31,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:15:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-28 15:15:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 15:15:31,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:15:31,286 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:15:31,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 15:15:31,286 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:15:31,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:15:31,290 INFO L82 PathProgramCache]: Analyzing trace with hash 512824027, now seen corresponding path program 5 times [2020-10-28 15:15:31,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:15:31,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159928372] [2020-10-28 15:15:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:15:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:31,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:31,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:33,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:34,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:36,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:36,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 15:15:36,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 15:15:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 15:15:36,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:36,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:15:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:15:36,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 15:15:36,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:36,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:15:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:36,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:36,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:36,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:15:36,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:15:36,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:15:36,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:36,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:15:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:15:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:15:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:36,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 15:15:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:36,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:36,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:36,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:37,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:41,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:15:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 15:15:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 15:15:41,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:41,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:15:41,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:15:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 15:15:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-28 15:15:41,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159928372] [2020-10-28 15:15:41,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:15:41,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:15:41,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352339976] [2020-10-28 15:15:41,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:15:41,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:15:41,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:15:41,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:15:41,471 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 10 states. [2020-10-28 15:15:42,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:15:42,209 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2020-10-28 15:15:42,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 15:15:42,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-28 15:15:42,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:15:42,211 INFO L225 Difference]: With dead ends: 99 [2020-10-28 15:15:42,211 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 15:15:42,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-10-28 15:15:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 15:15:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2020-10-28 15:15:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-28 15:15:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2020-10-28 15:15:42,242 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 52 [2020-10-28 15:15:42,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:15:42,243 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2020-10-28 15:15:42,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:15:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2020-10-28 15:15:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 15:15:42,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:15:42,244 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:15:42,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 15:15:42,245 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:15:42,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:15:42,245 INFO L82 PathProgramCache]: Analyzing trace with hash 2047974071, now seen corresponding path program 6 times [2020-10-28 15:15:42,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:15:42,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829986538] [2020-10-28 15:15:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:15:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:42,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:43,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:47,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:47,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 15:15:47,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:15:47,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 15:15:47,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:47,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:15:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:15:47,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 15:15:47,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:47,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:15:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:47,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:47,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:15:47,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:15:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:15:47,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:47,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:15:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:15:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:15:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 15:15:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:47,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:47,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:47,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:47,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:52,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:52,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 15:15:52,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 15:15:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 15:15:52,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:52,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:15:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:15:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 15:15:52,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-28 15:15:52,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829986538] [2020-10-28 15:15:52,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:15:52,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:15:52,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517254425] [2020-10-28 15:15:52,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:15:52,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:15:52,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:15:52,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:15:52,410 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 10 states. [2020-10-28 15:15:53,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:15:53,002 INFO L93 Difference]: Finished difference Result 118 states and 143 transitions. [2020-10-28 15:15:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:15:53,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-28 15:15:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:15:53,004 INFO L225 Difference]: With dead ends: 118 [2020-10-28 15:15:53,004 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 15:15:53,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 15:15:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 15:15:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-28 15:15:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 15:15:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-10-28 15:15:53,018 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 55 [2020-10-28 15:15:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:15:53,018 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-10-28 15:15:53,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:15:53,019 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-10-28 15:15:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 15:15:53,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:15:53,020 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:15:53,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 15:15:53,020 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:15:53,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:15:53,021 INFO L82 PathProgramCache]: Analyzing trace with hash 410532091, now seen corresponding path program 7 times [2020-10-28 15:15:53,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:15:53,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713099450] [2020-10-28 15:15:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:15:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:53,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:53,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:58,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:58,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 15:15:58,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:15:58,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 15:15:58,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:58,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:58,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:15:58,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:15:58,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:15:58,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:58,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:15:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:58,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:58,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:58,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:15:58,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:15:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:15:58,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:58,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:15:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:15:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:15:58,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:58,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 15:15:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:58,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:58,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:15:58,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 15:15:58,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:15:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 15:15:58,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:15:58,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:15:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:15:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 15:15:58,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:15:58,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:15:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-28 15:15:58,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713099450] [2020-10-28 15:15:58,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:15:58,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 15:15:58,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495271936] [2020-10-28 15:15:58,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:15:58,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:15:58,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:15:58,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:15:58,177 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 7 states. [2020-10-28 15:15:58,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:15:58,386 INFO L93 Difference]: Finished difference Result 132 states and 160 transitions. [2020-10-28 15:15:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:15:58,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2020-10-28 15:15:58,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:15:58,388 INFO L225 Difference]: With dead ends: 132 [2020-10-28 15:15:58,388 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 15:15:58,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:15:58,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 15:15:58,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-28 15:15:58,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 15:15:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-10-28 15:15:58,401 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 58 [2020-10-28 15:15:58,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:15:58,402 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-10-28 15:15:58,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:15:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-10-28 15:15:58,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 15:15:58,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:15:58,404 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:15:58,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 15:15:58,404 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:15:58,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:15:58,406 INFO L82 PathProgramCache]: Analyzing trace with hash -160011235, now seen corresponding path program 8 times [2020-10-28 15:15:58,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:15:58,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455567450] [2020-10-28 15:15:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:15:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:15:58,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:58,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:58,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:15:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:03,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:03,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 15:16:03,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:16:03,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 15:16:03,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:03,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:03,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:16:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:16:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 15:16:03,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:16:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:03,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:03,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:03,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:16:03,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:03,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:16:03,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:03,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:16:03,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:16:03,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:16:03,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:03,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:16:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:03,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:03,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:04,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:08,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:08,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 15:16:08,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 15:16:08,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 15:16:08,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:08,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:16:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:16:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 15:16:08,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-28 15:16:08,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455567450] [2020-10-28 15:16:08,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:16:08,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 15:16:08,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399450549] [2020-10-28 15:16:08,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:16:08,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:16:08,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:16:08,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:16:08,586 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 11 states. [2020-10-28 15:16:09,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:16:09,437 INFO L93 Difference]: Finished difference Result 115 states and 139 transitions. [2020-10-28 15:16:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 15:16:09,437 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-28 15:16:09,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:16:09,439 INFO L225 Difference]: With dead ends: 115 [2020-10-28 15:16:09,439 INFO L226 Difference]: Without dead ends: 79 [2020-10-28 15:16:09,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2020-10-28 15:16:09,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-28 15:16:09,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-10-28 15:16:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-28 15:16:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2020-10-28 15:16:09,461 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 60 [2020-10-28 15:16:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:16:09,462 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2020-10-28 15:16:09,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:16:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2020-10-28 15:16:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 15:16:09,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:16:09,463 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:16:09,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 15:16:09,463 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:16:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:16:09,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1613571589, now seen corresponding path program 9 times [2020-10-28 15:16:09,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:16:09,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070878662] [2020-10-28 15:16:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:16:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:09,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:09,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:09,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:09,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:10,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:10,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:14,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:14,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 15:16:14,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 15:16:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 15:16:14,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:14,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:16:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:16:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 15:16:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:16:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:14,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:14,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:14,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:16:14,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:14,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:16:14,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:14,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:14,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:16:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:16:14,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:16:14,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:14,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:16:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:14,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:15,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:15,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:19,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:19,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 15:16:19,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 15:16:19,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 15:16:19,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:19,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:16:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:16:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 15:16:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 15:16:19,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070878662] [2020-10-28 15:16:19,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:16:19,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 15:16:19,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996539850] [2020-10-28 15:16:19,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:16:19,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:16:19,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:16:19,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:16:19,657 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand 11 states. [2020-10-28 15:16:20,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:16:20,333 INFO L93 Difference]: Finished difference Result 129 states and 157 transitions. [2020-10-28 15:16:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 15:16:20,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-10-28 15:16:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:16:20,334 INFO L225 Difference]: With dead ends: 129 [2020-10-28 15:16:20,334 INFO L226 Difference]: Without dead ends: 80 [2020-10-28 15:16:20,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-28 15:16:20,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-28 15:16:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-28 15:16:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 15:16:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2020-10-28 15:16:20,356 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 63 [2020-10-28 15:16:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:16:20,356 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2020-10-28 15:16:20,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:16:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2020-10-28 15:16:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 15:16:20,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:16:20,358 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:16:20,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 15:16:20,358 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:16:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:16:20,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2066510157, now seen corresponding path program 10 times [2020-10-28 15:16:20,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:16:20,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180453026] [2020-10-28 15:16:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:16:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:20,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:20,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:20,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:20,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:23,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:25,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:25,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 15:16:25,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 15:16:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 15:16:25,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:25,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:16:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:16:25,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 15:16:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:25,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:16:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:25,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:25,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:16:25,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:25,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:16:25,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:25,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:25,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:16:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:16:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:16:25,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:25,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:16:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:26,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:26,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:30,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:30,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 15:16:30,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 15:16:30,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 15:16:30,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:30,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:30,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:16:30,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 15:16:30,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 15:16:30,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-28 15:16:30,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180453026] [2020-10-28 15:16:30,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:16:30,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 15:16:30,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121671395] [2020-10-28 15:16:30,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 15:16:30,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:16:30,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 15:16:30,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:16:30,551 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand 11 states. [2020-10-28 15:16:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:16:31,357 INFO L93 Difference]: Finished difference Result 124 states and 150 transitions. [2020-10-28 15:16:31,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 15:16:31,357 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-10-28 15:16:31,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:16:31,358 INFO L225 Difference]: With dead ends: 124 [2020-10-28 15:16:31,359 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 15:16:31,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-10-28 15:16:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 15:16:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2020-10-28 15:16:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-28 15:16:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2020-10-28 15:16:31,380 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 66 [2020-10-28 15:16:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:16:31,382 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2020-10-28 15:16:31,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 15:16:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2020-10-28 15:16:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 15:16:31,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:16:31,389 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:16:31,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 15:16:31,389 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:16:31,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:16:31,390 INFO L82 PathProgramCache]: Analyzing trace with hash 876100021, now seen corresponding path program 11 times [2020-10-28 15:16:31,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:16:31,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046184656] [2020-10-28 15:16:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:16:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:31,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:31,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:32,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:32,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:33,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:34,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:36,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:36,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 15:16:36,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:16:36,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 15:16:36,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:36,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:36,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:16:36,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:16:36,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 15:16:36,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:16:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:36,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:36,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:16:36,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:16:36,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:36,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:16:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:16:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:16:36,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:36,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 15:16:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:36,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:36,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:36,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 15:16:36,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 15:16:36,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:36,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:16:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 15:16:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:16:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-28 15:16:36,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046184656] [2020-10-28 15:16:36,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:16:36,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 15:16:36,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320672029] [2020-10-28 15:16:36,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:16:36,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:16:36,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:16:36,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:16:36,521 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand 8 states. [2020-10-28 15:16:36,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:16:36,790 INFO L93 Difference]: Finished difference Result 166 states and 204 transitions. [2020-10-28 15:16:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:16:36,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-28 15:16:36,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:16:36,792 INFO L225 Difference]: With dead ends: 166 [2020-10-28 15:16:36,792 INFO L226 Difference]: Without dead ends: 91 [2020-10-28 15:16:36,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:16:36,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-28 15:16:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-28 15:16:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 15:16:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2020-10-28 15:16:36,810 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 76 [2020-10-28 15:16:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:16:36,810 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2020-10-28 15:16:36,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:16:36,811 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2020-10-28 15:16:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-28 15:16:36,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:16:36,812 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:16:36,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 15:16:36,812 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:16:36,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:16:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash 282110039, now seen corresponding path program 12 times [2020-10-28 15:16:36,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:16:36,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033211955] [2020-10-28 15:16:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:16:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:37,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:41,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:41,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 15:16:41,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:16:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 15:16:41,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:41,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:16:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:16:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 15:16:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:41,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:16:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:41,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:41,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:16:41,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:41,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:16:41,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:41,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:16:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:16:41,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:16:41,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:41,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 15:16:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:42,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:42,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 15:16:42,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:42,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 15:16:42,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:42,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:16:42,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 15:16:42,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:16:42,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-28 15:16:42,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033211955] [2020-10-28 15:16:42,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:16:42,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:16:42,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274016561] [2020-10-28 15:16:42,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:16:42,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:16:42,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:16:42,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:16:42,052 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand 9 states. [2020-10-28 15:16:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:16:42,362 INFO L93 Difference]: Finished difference Result 183 states and 225 transitions. [2020-10-28 15:16:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:16:42,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-28 15:16:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:16:42,364 INFO L225 Difference]: With dead ends: 183 [2020-10-28 15:16:42,364 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 15:16:42,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:16:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 15:16:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2020-10-28 15:16:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-28 15:16:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2020-10-28 15:16:42,381 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 78 [2020-10-28 15:16:42,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:16:42,381 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2020-10-28 15:16:42,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:16:42,382 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2020-10-28 15:16:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 15:16:42,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:16:42,383 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:16:42,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 15:16:42,383 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:16:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:16:42,383 INFO L82 PathProgramCache]: Analyzing trace with hash 688387705, now seen corresponding path program 13 times [2020-10-28 15:16:42,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:16:42,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707006262] [2020-10-28 15:16:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:16:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:42,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:42,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:47,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:47,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 15:16:47,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:16:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 15:16:47,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:47,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 15:16:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:16:47,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 15:16:47,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:47,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:16:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:47,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:47,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:16:47,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:16:47,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:47,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:16:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:16:47,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:16:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:47,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:16:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:47,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:48,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:48,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 15:16:48,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-28 15:16:48,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:48,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:16:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:16:48,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 15:16:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-28 15:16:48,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707006262] [2020-10-28 15:16:48,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:16:48,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 15:16:48,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62405742] [2020-10-28 15:16:48,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 15:16:48,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:16:48,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 15:16:48,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:16:48,242 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand 17 states. [2020-10-28 15:16:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:16:49,690 INFO L93 Difference]: Finished difference Result 121 states and 144 transitions. [2020-10-28 15:16:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 15:16:49,691 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-10-28 15:16:49,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:16:49,692 INFO L225 Difference]: With dead ends: 121 [2020-10-28 15:16:49,693 INFO L226 Difference]: Without dead ends: 117 [2020-10-28 15:16:49,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=167, Invalid=1093, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 15:16:49,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-28 15:16:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-10-28 15:16:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 15:16:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2020-10-28 15:16:49,711 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 80 [2020-10-28 15:16:49,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:16:49,711 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2020-10-28 15:16:49,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 15:16:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2020-10-28 15:16:49,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 15:16:49,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:16:49,712 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 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] [2020-10-28 15:16:49,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 15:16:49,712 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:16:49,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:16:49,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1925874029, now seen corresponding path program 1 times [2020-10-28 15:16:49,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:16:49,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197781644] [2020-10-28 15:16:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:16:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:50,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:50,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:55,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:55,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 15:16:55,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 15:16:55,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5874 [2020-10-28 15:16:55,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:55,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:55,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 15:16:55,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:16:55,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 15:16:55,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:55,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:16:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:55,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:55,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:16:55,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:16:55,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:55,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:16:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:16:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:16:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:16:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:56,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:56,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 15:16:56,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:56,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-28 15:16:56,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:56,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:56,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:16:56,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:16:56,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 15:16:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:56,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 15:16:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:56,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:16:56,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:16:56,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:16:56,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:16:56,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:16:56,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:16:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:16:56,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:16:56,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:16:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:16:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 16 proven. 111 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-28 15:16:56,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197781644] [2020-10-28 15:16:56,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:16:56,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 15:16:56,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412913970] [2020-10-28 15:16:56,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 15:16:56,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:16:56,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 15:16:56,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-28 15:16:56,282 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand 18 states. [2020-10-28 15:16:57,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:16:57,263 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2020-10-28 15:16:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 15:16:57,264 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 88 [2020-10-28 15:16:57,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:16:57,265 INFO L225 Difference]: With dead ends: 112 [2020-10-28 15:16:57,265 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 15:16:57,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 15:16:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 15:16:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-28 15:16:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-28 15:16:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2020-10-28 15:16:57,286 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 88 [2020-10-28 15:16:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:16:57,287 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2020-10-28 15:16:57,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 15:16:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2020-10-28 15:16:57,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 15:16:57,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:16:57,288 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:16:57,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 15:16:57,288 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:16:57,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:16:57,289 INFO L82 PathProgramCache]: Analyzing trace with hash 261937249, now seen corresponding path program 2 times [2020-10-28 15:16:57,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:16:57,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627139196] [2020-10-28 15:16:57,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:16:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:16:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:57,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:59,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:16:59,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:00,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:01,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:02,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:02,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 15:17:02,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 15:17:02,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 15:17:02,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:02,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:02,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 15:17:02,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:17:02,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 15:17:02,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:02,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:17:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:02,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:02,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:17:02,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:02,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:17:02,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:02,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:02,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:02,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:17:02,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:02,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:17:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:02,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:02,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:02,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 15:17:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-28 15:17:02,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:02,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:17:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:17:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 15:17:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 15:17:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:03,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:03,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:17:03,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:17:03,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:03,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:17:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 15:17:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:03,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:03,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:17:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:17:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:03,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:17:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 4 proven. 134 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-28 15:17:03,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627139196] [2020-10-28 15:17:03,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:17:03,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 15:17:03,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560652564] [2020-10-28 15:17:03,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 15:17:03,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:17:03,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 15:17:03,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:17:03,041 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand 17 states. [2020-10-28 15:17:04,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:17:04,213 INFO L93 Difference]: Finished difference Result 120 states and 139 transitions. [2020-10-28 15:17:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 15:17:04,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2020-10-28 15:17:04,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:17:04,215 INFO L225 Difference]: With dead ends: 120 [2020-10-28 15:17:04,215 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 15:17:04,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 15:17:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 15:17:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-28 15:17:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-28 15:17:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-10-28 15:17:04,234 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 96 [2020-10-28 15:17:04,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:17:04,234 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-10-28 15:17:04,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 15:17:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-10-28 15:17:04,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 15:17:04,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:17:04,235 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:17:04,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 15:17:04,236 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:17:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:17:04,236 INFO L82 PathProgramCache]: Analyzing trace with hash 150141781, now seen corresponding path program 3 times [2020-10-28 15:17:04,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:17:04,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319565990] [2020-10-28 15:17:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:17:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:04,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:07,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:08,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:08,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:09,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:09,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 15:17:09,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 15:17:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5232 [2020-10-28 15:17:09,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:09,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:09,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 15:17:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:17:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 15:17:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:09,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:17:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:09,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:09,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:17:09,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:09,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:17:09,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:09,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:17:09,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:10,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:17:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:10,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:10,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:10,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 15:17:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:10,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-28 15:17:10,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:10,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 15:17:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:17:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 15:17:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:10,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 15:17:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:10,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:10,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:10,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:17:10,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:17:10,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:10,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:17:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:10,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 15:17:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:10,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:10,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:10,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:17:10,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:10,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:17:10,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:10,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:10,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:17:10,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:10,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 15:17:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:10,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:10,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:17:10,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:10,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:17:10,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:10,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:10,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:10,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:10,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:17:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 6 proven. 138 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-28 15:17:10,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319565990] [2020-10-28 15:17:10,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:17:10,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 15:17:10,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175496119] [2020-10-28 15:17:10,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 15:17:10,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:17:10,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 15:17:10,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:17:10,456 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 17 states. [2020-10-28 15:17:12,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:17:12,022 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2020-10-28 15:17:12,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 15:17:12,023 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 104 [2020-10-28 15:17:12,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:17:12,024 INFO L225 Difference]: With dead ends: 133 [2020-10-28 15:17:12,024 INFO L226 Difference]: Without dead ends: 129 [2020-10-28 15:17:12,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=163, Invalid=959, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 15:17:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-28 15:17:12,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 122. [2020-10-28 15:17:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-28 15:17:12,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2020-10-28 15:17:12,044 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 104 [2020-10-28 15:17:12,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:17:12,045 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2020-10-28 15:17:12,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 15:17:12,045 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2020-10-28 15:17:12,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 15:17:12,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:17:12,046 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:17:12,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 15:17:12,047 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:17:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:17:12,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1270814135, now seen corresponding path program 4 times [2020-10-28 15:17:12,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:17:12,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567078877] [2020-10-28 15:17:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:17:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:12,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:12,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:15,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:17,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:17,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 15:17:17,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 15:17:17,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5388 [2020-10-28 15:17:17,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:17,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-28 15:17:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:17:17,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 15:17:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:17:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:18,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:18,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:18,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:17:18,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:18,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:17:18,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:18,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:18,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:18,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:18,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:17:18,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:18,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:17:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:18,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:19,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:19,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:20,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:22,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:22,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:23,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:23,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 15:17:23,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 15:17:23,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 15:17:23,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:23,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 15:17:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 15:17:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 15:17:23,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:24,980 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2020-10-28 15:17:25,544 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 42 [2020-10-28 15:17:33,246 WARN L193 SmtUtils]: Spent 5.62 s on a formula simplification. DAG size of input: 163 DAG size of output: 158 [2020-10-28 15:17:33,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 15:17:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:33,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:33,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:17:33,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:33,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:17:33,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:33,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:17:33,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:33,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 15:17:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:33,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:33,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:33,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:17:33,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:17:33,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:33,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:33,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:17:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 15:17:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:33,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:33,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:33,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:17:33,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:17:33,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:33,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:33,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:17:33,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:33,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 15:17:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:17:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:17:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:17:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:17:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:17:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:17:33,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:17:33,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:17:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:17:33,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:17:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:17:33,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:17:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 36 proven. 172 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-28 15:17:33,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567078877] [2020-10-28 15:17:33,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:17:33,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 15:17:33,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56220654] [2020-10-28 15:17:33,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 15:17:33,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:17:33,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 15:17:33,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 15:17:33,619 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand 34 states. [2020-10-28 15:17:37,241 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 15:17:41,760 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification that was a NOOP. DAG size: 180 [2020-10-28 15:17:47,660 WARN L193 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-10-28 15:17:50,192 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-28 15:17:52,404 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 36 [2020-10-28 15:17:52,781 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2020-10-28 15:17:53,288 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2020-10-28 15:17:53,679 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2020-10-28 15:17:54,143 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-10-28 15:17:54,756 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 83 [2020-10-28 15:17:55,353 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2020-10-28 15:17:55,952 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2020-10-28 15:17:56,581 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 88 [2020-10-28 15:17:56,761 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 15:17:57,273 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 84 [2020-10-28 15:17:57,456 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 15:17:57,891 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 80 [2020-10-28 15:17:58,234 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-28 15:17:58,415 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-28 15:17:59,027 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2020-10-28 15:17:59,215 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 15:18:02,081 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-28 15:18:09,264 WARN L193 SmtUtils]: Spent 7.01 s on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-28 15:18:09,836 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2020-10-28 15:18:13,465 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-28 15:18:16,189 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-28 15:18:18,731 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-28 15:18:25,510 WARN L193 SmtUtils]: Spent 6.40 s on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-28 15:18:32,237 WARN L193 SmtUtils]: Spent 6.47 s on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-10-28 15:18:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:18:32,926 INFO L93 Difference]: Finished difference Result 392 states and 491 transitions. [2020-10-28 15:18:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-28 15:18:32,929 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 112 [2020-10-28 15:18:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:18:32,932 INFO L225 Difference]: With dead ends: 392 [2020-10-28 15:18:32,932 INFO L226 Difference]: Without dead ends: 321 [2020-10-28 15:18:32,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 16 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 64.5s TimeCoverageRelationStatistics Valid=1165, Invalid=7024, Unknown=1, NotChecked=0, Total=8190 [2020-10-28 15:18:32,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-28 15:18:32,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 258. [2020-10-28 15:18:32,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-28 15:18:32,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 330 transitions. [2020-10-28 15:18:32,984 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 330 transitions. Word has length 112 [2020-10-28 15:18:32,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:18:32,985 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 330 transitions. [2020-10-28 15:18:32,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 15:18:32,985 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 330 transitions. [2020-10-28 15:18:32,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 15:18:32,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:18:32,987 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:18:32,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 15:18:32,987 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:18:32,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:18:32,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1485813131, now seen corresponding path program 1 times [2020-10-28 15:18:32,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:18:32,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13801645] [2020-10-28 15:18:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:18:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:33,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:33,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:34,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:34,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking...